Rail maintenance cart

Abstract

To provide a rail maintenance cart that travels on a railway rail in a simple structure.SOLUTION: A rail maintenance cart comprises: a cart body which is provided with a front wheel 11b2 and a rear wheel 11c2 and seats 11c3, 11c3, travels on a rail while allowing passengers to ride, and is provided with two handle post attachment portions; a handle post portion 12 which is detachably attached to one handle post attachment portion and rotates the front wheel 11b2, which is a driving wheel, via a post rotation transmission shaft in a hollow post portion by an electric motor 13; a handle post section 12' which is detachably attached to the other handle post attachment portion and rotates the front wheel 11b2, which is the driving wheel, via the post rotation transmission shaft in the hollow post portion by an engine 13'; a brake portion 17 which has an anti-runaway brake function and a normal brake function; and other components. The rail maintenance cart is equipped with the electric motor 13 and the engine 13' and travels by using them alternately, or travels by using only one of the electric motor 13 and the engine 13'.SELECTED DRAWING: Figure 20

Description

[Technical field]

[0001] The present invention relates to a track maintenance cart that runs on railway rails. [Background technology]

[0002] Traditionally, in order to perform maintenance work on railway rails, human-powered maintenance work carts that run on the rails by pedaling like a bicycle (see, for example, Patent Document 1) have been used. In recent years, however, there has been an increasing use of electric maintenance work carts that are equipped with a battery to reduce the burden on maintenance workers and run on the rails by driving a motor using current from the battery (see, for example, Patent Documents 2 and 3). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2006-224797 A [Patent Document 2] Utility Model Registration No. 3235539 [Patent Document 3] JP 2012-062001 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, the track maintenance cart of the above-mentioned Patent Document 1 has a problem in that it requires pedaling like a bicycle to travel on railway rails, which places a heavy burden on the worker.

[0005] In addition, in the track maintenance carts of Patent Documents 2 and 3 mentioned above, the battery and motor are provided separately, requiring wiring to supply current from the battery to the motor, resulting in problems such as a complex structure and a tendency for the structure to break down.

[0006] In addition, in the case of maintenance carts that run on a motor powered by a battery, it takes a long time to charge the battery, and depending on the battery capacity, the traveling distance tends to be shorter than that of maintenance carts that run on engines that use gasoline or other fuels, which may hinder smooth maintenance work.

[0007] The present invention has been made with a focus on these problems, and aims to provide a track maintenance cart that, first, has a simple structure and can run on railway rails, and second, has no restrictions on the distance it can run, does not interfere with smooth track maintenance work, and improves workability. [Means for solving the problem]

[0008] In order to solve the above problems, the track maintenance cart of the present invention is a track maintenance cart having a cart body that runs on rails by rotating drive wheels via a rotation transmission mechanism, and a handle post section that is attached to the cart body and has a handle section for an occupant to grasp, and is characterized in that the handle post section is further provided with a drive source which is an electric motor or engine that rotates the post rotation transmission shaft, and a travel control section that controls the rotation of the drive wheels via the post rotation shaft and the rotation transmission mechanism by controlling the on / off of the drive source, thereby controlling the travel of the track maintenance cart. In addition, the track maintenance cart of the present invention is further provided with a brake unit that maintains a runaway prevention braking state in which the brakes are applied by an elastic body even in a state in which the brake pedal is not operated, and the traveling control unit is configured to control the brake unit to first release the runaway prevention braking state when switching the drive source from an off state to an on state, and to switch the drive source to an on state after the runaway prevention braking state is released. In addition, in the track maintenance cart according to the present invention, the drive source is provided with a drive source switch for turning the drive source on or off, and a drive source switch on / off operation mechanism for operating the drive source switch, and the travel control unit includes a travel control base unit provided on the handle post unit, a brake / drive source control cam plate rotatably attached to the travel control base unit and having the operation lever operated by the occupant attached thereto, a drive source switch on / off link rotatably attached to the travel control base unit and for operating the drive source switch on / off operation mechanism for turning the drive source switch of the drive source on or off via a drive source switch on / off wire connected to the application point side, and and a runaway prevention brake release link connected to a runaway prevention brake release lever which releases the runaway prevention brake state applied by the brake section via a runaway prevention brake wire connected to the point of application side, and the brake / driving source control cam plate is configured such that, when a passenger operates the operating lever to rotate it relative to the driving control base section, the brake / driving source control cam plate first releases the runaway prevention brake state applied by the brake section via the runaway prevention brake release link and the runaway prevention brake wire, and then turns on the driving source switch by operating the driving source switch on / off operation mechanism section via the driving source switch on / off link and the driving source switch on / off wire. Furthermore, in the track maintenance cart of the present invention, the brake / drive source control cam plate is provided with a rotation prevention stopper which abuts against the travel control base portion to stop the rotation of the brake / drive source control cam plate after an occupant operates the operating lever to rotate it relative to the travel control base portion and turn on the drive source switch. In addition, in the track maintenance cart of the present invention, the shaft of the drive source is attached to the upper end of the handle post portion so that it faces downward, and the handle post portion is hollow and provided with a post rotation transmission shaft connected to the shaft, so that the drive wheel is rotated via the post rotation transmission shaft and the rotation transmission mechanism portion. In addition, in the track maintenance cart of the present invention, the cart body has the drive wheel mounted on a drive wheel axle that rotates via the rotation transmission mechanism, a handle post mounting portion is provided on the drive wheel axle, and a handle post connecting portion is provided at the lower end of the handle post portion, the handle post connecting portion is detachably attached to the handle post mounting portion, and the post rotation transmission shaft of the handle post portion rotates the drive wheel via the rotation transmission mechanism and the drive wheel axle. In addition, the track maintenance cart of the present invention is also characterized in that the drive wheel is provided with two handle post mounting portions, and the handle post connecting portions of the handle post section are detachably connected to the two handle post mounting portions, respectively. In addition, the track maintenance cart according to the present invention is also characterized in that the drive source is a battery-powered electric motor that rotates the shaft by current supply from a rechargeable battery attached to the electric motor body. In addition, in the track maintenance cart of the present invention, the battery-powered electric motor is a battery-powered electric motor for a mixer, and is configured so that the shaft rotates by inertia even when the power is turned off. The track maintenance cart according to the present invention is also characterized in that the drive wheels rotated by the drive source are provided with one-way clutch type free wheels that permit rotation only in the forward direction. Effect of the Invention

[0009] In the track maintenance cart of the present invention, a handle post section having a handle section that the occupant grasps is provided on the cart body on which the occupant sits, and the handle post section is further provided with a drive source which is an electric motor or engine that rotates the post rotation transmission shaft, and a travel control section which controls the rotation of the drive wheels via the post rotation shaft and the rotation transmission mechanism section by controlling the on / off of the drive source, thereby controlling the travel of the track maintenance cart. Therefore, it can run on railway rails with a simple structure. [Brief description of the drawings]

[0010] [Figure 1] 1 is a side view showing a state in which a driver is riding on a track maintenance cart according to a first embodiment of the present invention. FIG. [Diagram 2] 1 is a plan view of a track maintenance cart according to a first embodiment of the present invention. [Diagram 3] FIG. 1 is a front view of a track maintenance cart according to a first embodiment of the present invention. [Figure 4] FIG. 4 is an enlarged view of part A in FIG. [Diagram 5] FIG. 1 is a side view showing a state in which two handle post portions, each equipped with an electric motor and an engine, have been removed from the cart body of a track maintenance cart according to a first embodiment of the present invention. [Figure 6] FIG. 1 is a plan view showing a state in which two handle post portions, each equipped with an electric motor and an engine, have been removed from a cart body of a track maintenance cart according to a first embodiment of the present invention. [Figure 7] FIG. 1 is a front view showing a state in which two handle post portions, each equipped with an electric motor and an engine, have been removed from a cart body of a track maintenance cart according to a first embodiment of the present invention. [Figure 8] FIG. 1 is a side view of a handle post portion constituting a track maintenance cart according to a first embodiment of the present invention, showing a state in which a travel control unit, a runaway prevention brake wire, etc. are omitted. [Figure 9] 9 is a front view of the handle post portion in the state shown in FIG. 8. [Figure 10] 9 is a plan view of the handle post portion in the state shown in FIG. 8. [Figure 11] FIG. 2 is a side view of a handle post portion constituting the track maintenance cart of the first embodiment according to the present invention, showing a travel control unit, a runaway prevention brake wire, etc. [Figure 12] 1 is an enlarged side view of essential parts showing the state of the travel control unit and the drive source switch on / off operation mechanism unit etc. when the operation lever is not operated and the track maintenance cart of embodiment 1 of the present invention is in a stopped state. [Figure 13]1 is an enlarged plan view of a main portion showing a state of a brake unit in a track maintenance cart according to a first embodiment of the present invention when an operating lever is not operated and the cart is in a stopped state. FIG. [Figure 14] 1 is an enlarged side view of a main portion showing the state of the travel control unit and the drive source switch on / off operation mechanism unit when the operating lever is operated and the brake unit is released in the track maintenance cart of embodiment 1 of the present invention. FIG. [Figure 15] 1 is an enlarged plan view of a main portion showing a state of a brake unit in a track maintenance cart according to a first embodiment of the present invention when an operating lever is operated and the brake unit is released to a runaway prevention brake released state. FIG. [Figure 16] FIG. 11 is an enlarged side view of the main parts showing the state of the traveling control unit and the driving source switch on / off operation mechanism unit when the operating lever is further operated in the track maintenance cart of embodiment 1 of the present invention, the brake unit is released, and then the driving source switch of the battery-powered electric motor is switched from off to on and the track maintenance cart is traveling. [Figure 17] FIG. 11 is an enlarged plan view of the main parts showing the state of the brake unit when the operating lever is further operated in the track maintenance cart of embodiment 1 of the present invention, the brake unit is released, and then the drive source switch of the battery-powered electric motor is switched from off to on and the track maintenance cart is moving. [Figure 18] FIG. 1 is an enlarged plan view of a main part showing the state of the brake section when the foot brake section is stepped on and the normal brake is activated while the maintenance cart of the first embodiment of the present invention is traveling with the anti-runaway brake released. [Figure 19] FIG. 11 is a front view of a track maintenance cart according to a second embodiment of the present invention. [Figure 20] FIG. 4 is a plan view of a track maintenance cart according to a second embodiment of the present invention. [Figure 21] FIG. 11 is a right side view of a track maintenance cart according to a second embodiment of the present invention. [Figure 22] FIG. 11 is a side view of a handle post equipped with an engine as a driving source for use in a track maintenance cart according to a second embodiment of the present invention. [Diagram 23]FIG. 11 is a front view of a handle post portion equipped with an engine as a driving source for use in a track maintenance cart according to a second embodiment of the present invention. [Figure 24] FIG. 11 is a front view showing a state in which two handle post portions, each equipped with an electric motor and an engine, have been removed from the cart body of a track maintenance cart according to a second embodiment of the present invention. [Diagram 25] FIG. 11 is a plan view showing a state in which two handle post portions, each equipped with an electric motor and an engine, have been removed from the cart body of a track maintenance cart according to a second embodiment of the present invention. [Figure 26] FIG. 11 is a right side view showing a state in which an occupant steps on the runaway prevention brake wire direction change link on the handle post side of a track maintenance cart having an engine mounted as a driving source in accordance with the second embodiment of the present invention to release the runaway prevention brake state. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, the track maintenance carts 1, 1' according to the first and second embodiments of the present invention will be described in detail with reference to the attached drawings. Note that the first and second embodiments described below are merely examples of the present invention, and the present invention is not limited to the following first and second embodiments, and can be modified as appropriate within the scope of the technical concept of the present invention.

[0012] Embodiment 1. <Configuration of track maintenance cart 1 according to embodiment 1> The track maintenance cart 1 of embodiment 1 is an electric cart that uses an electric motor 13 with a detachable battery as a driving source, and as shown in Figures 1 to 7, etc., is configured with a cart body 11, a handle post section 12, a detachable battery-powered electric motor 13, a traveling control section 14, a switch on / off operation mechanism section 15 for the driving source, a rotation transmission mechanism section 16, a brake section 17, etc.

[0013] (Cart body 11) The cart body 11 is configured with front wheels 11b2, 11b2 connected to the front and rear of a cart body frame 11a, which is made of steel materials such as square timber and square pipes joined by welding or bolts, via a front wheel axle 11b1, rear wheels 11c2, 11c2 connected to a rear wheel axle 11c1, and left and right seats 11c3, 11c3 for two passengers, including the driver, to sit on.

[0014] The front wheels 11b2, 11b2 are drive wheels rotated by a detachable battery-powered electric motor 13 via a rotation transmission mechanism 16, and are provided with free wheels 11b21, 11b21 of a one-way clutch mechanism that permits rotation only in the forward direction.

[0015] In addition, in the track maintenance cart 1 of embodiment 1, a handle post mounting portion 11c4 is provided on the cart body 11 so that the handle post portion 12, which has a detachable battery-powered electric motor 13 mounted on the upper part of the handle post portion 12, can be detachably attached to the cart body 11.

[0016] As shown in Figures 3 and 4, the handle post mounting portion 11c4 is formed by welding or the like to handle post mounting plates 11c41, 11c41 on the cart body frame 11a of the cart body 11, and is composed of a connecting pin 11c32 that passes through connecting holes provided in the handle post mounting plates 11c41, 11c41 and connecting holes 12c1, 12c1 (see Figure 8) provided in handle post connecting plates 12c, 12c at the lower end of the handle post 12.

[0017] Therefore, the handle post portion 12 and the detachable battery-powered electric motor 13 attached to the upper portion of the handle post portion 12 can be detached from the cart body 11, thereby improving maintainability.

[0018] The cart body 11 is provided with a headlight, a horn, a taillight, etc., although not shown. Of course, the headlight and the horn may be provided on the handle post portion 12.

[0019] (Handle post part 12) As shown in Figures 1, 8, 11, 12, etc., the handle post section 12 stands up from the cart body 11, and is equipped with a hollow post section 12a at the upper part of which is provided a detachable battery-type electric motor 13, whose shaft 13a2 rotates with current supplied from a detachable battery 13b, and a driving control section 14, a post rotation transmission shaft 12b which is provided within the hollow post section 12a and connected to the shaft 13a of the detachable battery-type electric motor 13 and transmits the rotation of the shaft 13a2 to the rotation transmission mechanism section 16, a handle post connecting plate 12c which is provided at the lower end of the hollow post section 12a and connected to the handle post mounting plates 11c41, 11c41 of the handle post mounting section 11c4 by connecting pin 11c42 (see Figure 4), and a handle section 12d which is grasped by the driver.

[0020] As shown in Figures 8 and 9, a chuck portion 12b1 is provided at the upper end of the post rotation transmission shaft 12b, which is connected to the tip of the shaft 13a of the detachable battery-type electric motor 13, while a driving bevel gear connection portion 12b2 is provided at the lower end of the post rotation transmission shaft 12b, which fits into and connects to a hexagonal recess provided in a driving bevel gear 16c of the rotation transmission mechanism portion 16, and is configured to transmit the rotation of the shaft 13a2 of the detachable battery-type electric motor 13 to the driving bevel gear 16c of the rotation transmission mechanism portion 16 via the post rotation transmission shaft 12b.

[0021] (Detachable battery-powered electric motor 13) The detachable battery-powered electric motor 13 is composed of an electric motor body 13a that rotates a shaft 13a2 by turning on / off a drive source switch 13a1, and a detachable battery 13b that is detachably attached to the electric motor body 13a and supplies a drive current to the electric motor body 13a. In this embodiment 1, an electric motor for stirring is used, that is, a commercially available electric motor in which the rotation of the shaft 13a2 continues unstopped even after the power source is turned off.

[0022] In addition, in the track maintenance cart 1 of this embodiment 1, the driver does not directly operate the drive source switch 13a1 of the detachable battery-powered electric motor 13 to drive the cart body 11, but instead operates the operating lever 14b1 of the driving control unit 14 to turn the drive source switch 13a1 on / off via the drive source switch on / off operation mechanism unit 15, as described below.

[0023] (Drive control unit 14) The driving control unit 14 is provided on the top of the handle post section 12 as shown in Figures 1, 11, 12, etc., and is the part that controls the on / off of the detachable battery-powered electric motor 13 and the release of the brake of the brake section 17, and is equipped with a driving control base section 14a attached by welding or the like to the top of the hollow post section 12a of the handle post section 12, a cam plate 14b for controlling the brake / driving source, a link 14c for releasing the runaway brake, a link 14d for turning the drive source switch on / off, and a wire 14e for turning the drive source switch on / off.

[0024] The travel control base portion 14a is a base plate attached to the upper portion of the hollow post portion 12a of the handle post portion 12 by welding or the like.

[0025] As shown in FIG. 12 etc., the brake / driving source control cam plate 14b is rotatably attached to the driving control base portion 14a via a pivot shaft portion 14b1, and is provided with an operating lever 14b2 to be gripped by the driver, and is also provided with a runaway prevention brake release link abutment portion 14b3 which, when rotated clockwise around the pivot shaft portion 14b1, abuts against the force point end 14c2 of the runaway prevention brake release link 14c to rotate the runaway prevention brake release link 14c and pull the core wire 17i1 of the runaway prevention brake vertical wire 17i connected to the action end 14c3 of the runaway prevention brake release link 14c, thereby preemptively releasing the runaway prevention brake state established by the brake portion 17.

[0026] In addition, the brake / driving source control cam plate 14b rotates clockwise via a pivot shaft portion 14b1, and the runaway prevention brake release link abutment portion 14b3 abuts against the force point end 14c2 of the runaway prevention brake release link 14c, rotating the runaway prevention brake release link 14c counterclockwise and sending out the core wire 17i1 of the runaway prevention brake vertical wire 17i downward in FIG. 11, and rotating the runaway prevention brake wire direction changing link 17j (see FIGS. 1, 11, etc.) rotatably attached to the cart main body frame 11a clockwise to pull the core wire 17k1 of the runaway prevention brake horizontal wire 17k to the left in FIG. 11, thereby first releasing the runaway prevention brake state by the brake portion 17, and then the drive source switch on / off link The drive source switch on / off link abutment portion 14b4 abuts against the force point end 14d2 of the drive source switch on / off link 14d to rotate the drive source switch on / off link 14d clockwise about its rotation shaft 14d1, pulling the drive source switch on / off wire 14e connected to the action end 14d3 of the drive source switch on / off link 14d, thereby operating the drive source switch on / off mechanism portion 15 to turn on the drive source switch 13a1 of the electric motor main body 13a of the detachable battery type electric motor 13, and a rotation prevention stopper 14b5 abuts against the travel control base portion 14a to stop (halt) the rotation of the brake / drive source control cam plate 14b after the brake portion 17 has been released and the drive source switch 13a1 of the detachable battery type electric motor 13 has been turned on.

[0027] As shown in FIG. 12 etc., the runaway prevention brake release link 14c is attached to the travel control base portion 14a by a pivot shaft portion 14c1 so as to be rotatable within the same plane as the brake / drive source control cam plate 14b and the drive source switch on / off link 14d, and the force point end 14c2 is configured to abut against the runaway prevention brake release link abutment portion 14b3 of the brake / drive source control cam plate 14b, while the action end 14c3 is connected to a core wire 17i1 of the runaway prevention brake vertical wire 17i.

[0028] The drive source switch on / off link 14d is attached to the travel control base portion 14a by a pivot shaft portion 14d1 so as to be rotatable in the same plane as the brake / drive source control cam plate 14b and the runaway prevention brake release link 14c. As will be described later, the force point end 14d2 is configured so that it first rotates when the drive source switch on / off link abutment portion 14b4 of the brake / drive source control cam plate 14b abuts against it from below, and then rotates when the upper part of the force point end 14c2 of the linked runaway prevention brake release link 14c abuts against it from below. Meanwhile, the action end 14d3 is configured to pull the drive source switch on / off wire 14e by the counterclockwise rotation of the drive source switch on / off link 14d, and to operate the drive source switch on / off mechanism portion 15 to control the on / off of the drive source switch 13a1 of the detachable battery type electric motor 13.

[0029] (Drive source switch on / off operation mechanism 15) The driving source switch on / off operation mechanism 15 is a mechanism for turning on / off the driving source switch of the detachable battery-type electric motor 13, and as shown in Figures 11 and 12, etc., is equipped with operation plates 15a, 15a attached to both the left and right sides of the motor body 13a of the detachable battery-type electric motor 13 so as to surround the driving source switch 13a1 from both the left and right sides, and an eccentric rotor 15b rotatably provided between the operation plates 15a, 15a by an eccentric rotating shaft 15b1. The eccentric rotor 15b is provided with an eccentric rotor lever 15b2 connected to the working end 14d3 of the driving source switch on / off link 14d via the driving source switch on / off wire 14e, and the eccentric rotor 15b rotates around the eccentric rotating shaft 15b1 to push and pull the driving source switch 13a1 to turn it on / off.

[0030] (Rotation transmission mechanism 16) As shown in Figure 4 etc., the rotation transmission mechanism 16 is provided with a recess that fits onto the post rotation transmission shaft 12b provided at the lower end of the post rotation transmission shaft 12b, and is configured to include a connecting part 16b that is rotatably supported on the cart main body frame 11a via a bearing part 16a, a rotating driving bevel gear 16c fixed to the lower end of the connecting part 16b, and a driven bevel gear 16d that is provided on the front wheel axle 11b1 and meshes with the driving bevel gear 16c. By operating the driving control unit 14, the rotation of the shaft 13a2 of the detachable battery-type electric motor 13 is transmitted via the post rotation transmission shaft 12b in the handle shaft 12 and the rotation transmission mechanism 16 to rotate the front wheel axle 11b1, thereby rotating the front wheels 11b2, 11b2 which are the driving wheels.

[0031] (Brake section 17) The brake unit 17 is a mechanism that, even when the brake pedal 17g (see Figs. 1, 2, etc.) is not depressed, pulls the core wire 17i1 of the runaway prevention brake vertical wire 17i by the tensile force of the first tension spring 14g, which is an elastic body, and rotates the runaway prevention brake wire direction changing link 17j (see Figs. 1, 11, etc.) rotatably attached to the cart main body frame 11a counterclockwise to feed out the core wire 17k1 of the runaway prevention brake horizontal wire 17k, thereby setting up the runaway prevention brake state shown in Fig. 13 described later, in which the brake shoes 17f, 17f sandwich the brake disc 17e provided on the rear wheel axle 11c1, thereby applying the brakes to the rear wheels 11c2, 11c2 provided at both ends of the rear wheel axle 11c1. As shown in Figs. 13, 15, etc., a, a runaway prevention brake lever 17b rotatably mounted on the brake base portion 17a via a pivot shaft 17b1, a second tension spring 17c which is provided between the force point end 17b2 side of the runaway prevention brake lever 17b and the spring hook portion 17a1 of the base portion 17a and which constantly pulls the force point end 17b2 side of the runaway prevention brake lever 17b in a clockwise direction, and a normal brake lever 17d which is rotatably mounted on the brake base portion 17a via a pivot shaft 17d1, the force point end 17d2 is connected to a core wire 17h1 of the normal brake wire 17h and which opens and closes the brake shoes 17f, 17f by its action end 17d3, and in the runaway prevention braking state, as shown in FIG. 13, the action end 17b3 of the runaway prevention brake lever 17b presses the action end 17d3 of the normal brake lever 17d to close the brake shoes 17f, 17f and apply the brakes. Therefore, the active end 17b3 of the runaway prevention brake lever 17b has a straight-line brake lever abutment portion 17b31 formed by removing part of the disk, and the state shown in Figure 13 is such that the corner of the brake lever abutment portion 17b31 presses against the active end 17b3 of the runaway prevention brake lever 17b to enter the runaway prevention braking state, while in Figure 15 the surface of the brake lever abutment portion 17b31 abuts against the active end 17b3 of the runaway prevention brake lever 17b to release the runaway prevention braking state.

[0032] In other words, the state shown in Figure 13 is a state in which, as will be described later, the operating lever 14b2 of the brake / driving source control cam plate 14b is not operated, the force point end 17b2 of the runaway prevention brake lever 17b is pulled by the tensile force of the second tension spring 17c, the corner of the brake lever abutment portion 17b31 of the operating end 17b3 of the runaway prevention brake lever 17b presses the operating end 17b3 of the runaway prevention brake lever 17b, closing the brake shoes 17f, 17f to clamp the brake disc 17e and apply the brakes.

[0033] In response to this, as will be described later, when the operating lever 14b2 of the brake / driving source control cam plate 14b is pulled, the core wire 17i1 of the runaway prevention brake vertical wire 17i is sent out and the runaway prevention brake lever 17b rotates counterclockwise in the β direction as shown in FIG. 15 from the state shown in FIG. 13, the surface of the brake lever abutment portion 17b31 of the operating end 17b3 of the runaway prevention brake lever 17b abuts against the operating end 17d3 of the normal brake lever 17d, and by pulling the operating end 17d3 of the normal brake lever 17d in the leftward direction in FIG. 15, the normal brake lever 17d rotates counterclockwise, the brake shoes 17f, 17f open and the brake disc 17e is released, and the runaway prevention braking state provided by the brake section 17 is released.

[0034] Furthermore, even if the runaway prevention braking state is released, the brake unit 17 can apply the brakes by stepping on a brake pedal 17g that is rotatably mounted on the cart body 11, thereby closing the brake shoes 17f, 17f of the brake unit 17 via a normal brake wire 17h connected to the brake pedal 17g and clamping the brake disc 17e provided on the rear wheel axle 11c1, as shown in Figure 18 described below.

[0035] <Operation of the track maintenance cart 1 of the first embodiment> Next, the operation of the track maintenance cart 1 of the first embodiment configured as above will be described.

[0036] (When no passengers are on board (anti-runaway brakes in operation) When no passenger is on board, in the driving control unit 14, the operating lever 14b2 of the brake / drive source control cam plate 14b is not operated and is in an upright position as shown in Figure 12, and the runaway prevention brake release link 14c and the drive source switch on / off link 14d are not rotated by the brake / drive source control cam plate 14b.

[0037] Therefore, as shown in Figure 12, the core wire 17i1 of the runaway prevention brake vertical wire 17i is pulled upward in Figure 12 by the tensile force of the first tension spring 14g, the runaway prevention brake wire direction conversion link 17j (see Figures 1, 11, etc.) rotatably attached to the cart main body frame 11a rotates counterclockwise, and the core wire 17k1 of the runaway prevention brake horizontal wire 17k is sent out to the right in Figure 1.

[0038] As a result, in the brake section 17, as shown in FIG. 13, the runaway prevention brake lever 17b, to which the core wire 17k1 of the runaway prevention brake horizontal wire 17k is connected, rotates at the force point end 17b2 in the direction α due to the tensile force of the second tension spring 17c, maintaining the closed state, and the corner of the brake lever abutment portion 17b31 at the working end 17b3 of the runaway prevention brake lever 17b presses the working end 17d3 of the normal brake lever 17d, pushing the piston rod 17m to the right in FIG. 13, thereby closing the brake shoes 17f, 17f and clamping the brake disc 17e, thereby applying the brakes.

[0039] As a result, in the state shown in Figs. 12 and 13, the track maintenance cart 1 of this embodiment 1 is in a runaway prevention brake state in which the brake unit 17 is functioning and the runaway prevention brake is applied, preventing the cart from moving on its own.

[0040] In this state, as shown in FIG. 12, the drive source switch ON / OFF link 14d is not rotated by the brake / drive source control cam plate 14b, so the eccentric rotor lever 15b2 is not pulled via the drive source switch ON / OFF wire 14e connected to the working end 14d3 of the drive source switch ON / OFF link 14d, and the eccentric rotor 15b does not rotate about the eccentric rotation shaft 15b1, thereby maintaining the drive source switch 13a1 in the OFF state.

[0041] Therefore, in the state shown in Figures 12 and 13, not only is the brake unit 17 functioning, but the detachable battery-powered electric motor 13 is in the off state, so the track maintenance cart 1 does not move.

[0042] (A passenger gets in the car and pulls the operation lever 14b2 halfway (runaway prevention release state)) When an occupant rides on the track maintenance cart 1 of this embodiment 1 and pulls the operating lever 14b2 of the brake / driving source control cam plate 14b halfway, in the traveling control unit 14, the brake / driving source control cam plate 14b rotates halfway clockwise around the pivot axis 14b1 as the rotation center, as shown in FIG. 14, and the runaway prevention brake release link abutment portion 14b3 rises, lifting the force point end 14c2 of the runaway prevention brake release link 14c, rotating the runaway prevention brake release link 14c counterclockwise, and the action end 14c3 of the runaway prevention brake release link 14c sends out the core wire 17i1 of the runaway prevention brake vertical wire 17i downward against the first tension spring 14g.

[0043] Then, as shown in FIG. 1, the runaway prevention brake wire direction changing link 17j rotatably supported on the cart body 11a rotates clockwise and pulls the core wire 17k1 of the runaway prevention brake horizontal wire 17k to the left in FIG.

[0044] As a result, in the brake section 17, as shown in Figure 15, the core wire 17k1 of the runaway prevention brake horizontal wire 17k is pulled in the upward and downward direction in Figure 15, and the runaway prevention brake lever 17b rotates counterclockwise in the β direction against the tensile force of the second tension spring 17c, causing the linear brake lever abutment portion 17b31 of the active end 17b3 of the runaway prevention brake lever 17b to abut against the active end 17d3 of the normal brake lever 17d, and the normal brake lever 17d begins to be pulled in the leftward direction in Figure 15.

[0045] As shown in Figure 15, when the active end 17b3 of the runaway prevention brake lever 17b begins to be pulled without pressing the active end 17d3 of the normal brake lever 17d, the normal brake lever 17d rotates counterclockwise, pulling the piston rod 17m to the left in Figure 15 and opening the brake shoes 17f, 17f, as shown in Figure 15, and releasing the brake disc 17e and releasing the runaway prevention braking state provided by the brake section 17.

[0046] Therefore, in this state, the anti-runaway brake is released, so if the running rail R is laid in a steeply inclined section, the maintenance cart 1 will run away on its own due to the gradient (slope) of the rail R, and if the drive source switch 13a1 of the detachable battery-powered electric motor 13 is on, there is a possibility that the maintenance cart 1 will run away.

[0047] However, when the operating lever 14b2 shown in FIG. 14 is pulled halfway, the brake / driving source control cam plate 14b also rotates the driving source switch ON / OFF link 14d slightly counterclockwise, pulling the driving source switch ON / OFF wire 14e connected to the working end 14d3 of the driving source switch ON / OFF link 14d to raise the eccentric rotor lever 15b2. Although the eccentric rotor 15b rotates slightly about the eccentric rotating shaft 15b1, the driving source switch 13a1 is not pressed and remains in the OFF state.

[0048] Therefore, in the state shown in FIG. 14, although the brake of the braking unit 17 is released, the detachable battery-powered electric motor 13 is in the off state, so that the track maintenance cart 1 does not run electrically.

[0049] (A passenger gets in the vehicle and pulls the operation lever 14b2 until it stops (driving state)) When the driver further tilts the operating lever 14b2 of the cam plate 14b for controlling the brakes and driving power source from the position shown in Figure 14 toward the horizontal position, the anti-rotation stopper 14b5 provided on the opposite side of the cam plate 14b for controlling the brakes and driving power source abuts against the lower end surface of the driving control base part 14a, as shown in Figure 16, and the rotation of the cam plate 14b for controlling the brakes and driving power source relative to the driving control base part 14a stops.

[0050] Then, as shown in Figure 16, the brake / driving source control cam plate 14b rotates further clockwise than in the case shown in Figure 14, causing the runaway prevention brake release link abutment portion 14b3 to rise, further lifting the force point end 14c2 side of the runaway prevention brake release link 14c, causing the runaway prevention brake release link 14c to rotate counterclockwise, and the action end 14c3 of the runaway prevention brake release link 14c moves against the first tension spring 14g to further feed out the core wire 17i1 of the runaway prevention brake vertical wire 17i.

[0051] Then, as shown in FIG. 1, the runaway prevention brake wire direction changing link 17j rotatably supported on the cart body 11a rotates further clockwise, pulling the core wire 17k1 of the runaway prevention brake horizontal wire 17k further leftward in FIG.

[0052] As a result, in the brake section 17, as shown in Figure 17, the core wire 17k1 of the runaway prevention brake horizontal wire 17k is pulled further downward in Figure 17, and the runaway prevention brake lever 17b rotates further in the counterclockwise β direction while resisting the tensile force of the second tension spring 17c, causing the active end 17b3 of the runaway prevention brake lever 17b to begin to press the active end 17d3 of the normal brake lever 17d, rotating the normal brake lever 17d clockwise and pushing the piston rod 17m to the right in Figure 17, causing the brake shoes 17f, 17f to begin to close.

[0053] However, in this state, as described above, the anti-rotation stopper 14b5 provided on the opposite side of the brake / drive source control cam plate 14b abuts against the lower end surface of the travel control base portion 14a, stopping the rotation of the brake / drive source control cam plate 14b relative to the travel control base portion 14a, and causing the rotation of the runaway prevention brake lever 17b and the normal brake lever 17d to also stop. As a result, although the brake shoes 17f, 17f are closer than they are in the state shown in Figure 15, they do not reach the state where they clamp the brake disc 17e and apply the brakes, and the runaway prevention brake remains in the released state.

[0054] However, further counterclockwise rotation of the runaway prevention brake release link 14c causes the force point end 14c2 of the runaway prevention brake release link 14c to lift the force point end 14d2 side of the drive source switch on / off link 14d, as shown in FIG. 16, causing the drive source switch on / off link 14d to rotate further counterclockwise.

[0055] Then, the drive source switch ON / OFF wire 14e connected to the working end 14d3 of the drive source switch ON / OFF link 14d is pulled further, and the eccentric rotor lever 15b2 is also pulled further via the drive source switch ON / OFF wire 14e, causing the eccentric rotor 15b to rotate further about the eccentric rotation shaft 15b1, and switching the drive source switch 13a1 from the OFF state to the ON state.

[0056] Therefore, in the state shown in Figure 16, the brake of the brake unit 17 is in the released state as shown in Figure 17, and the detachable battery-powered electric motor 13 is switched to the on state, so that the detachable battery-powered electric motor 13 rotates the shaft 13a2 by the supply of current from the detachable battery 13b.

[0057] Then, the post rotation transmission shaft 12b of the handle post section 12, which is connected to the shaft 13a2 of the detachable battery-type electric motor 13 by the chuck section 12b1, also rotates, and the driving bevel gear 16c at the lower end of the post rotation transmission shaft 12b also rotates, causing the front wheel axle 11b1 to rotate via the driven bevel gear 16d of the rotation transmission mechanism section 16, thereby rotating the front wheels 11b2, 11b2, and allowing the maintenance cart 1 of this embodiment 1 to run.

[0058] Therefore, according to the track maintenance cart 1 of this embodiment 1, when no occupant is on board, the brake unit 17 is functioning and the cart is in a runaway prevention brake state where it will not move on its own, whereas when an occupant is on board and pulls the operating lever 14b2 of the brake / driving source control cam plate 14b, the brake unit 17 first releases the brake, and then the detachable battery-powered electric motor 13 switches to the on state and the track maintenance cart 1 moves, so that the driver does not have to perform any complicated operations, and by simply operating the operating lever 14b2, no extra load is placed on the detachable battery-powered electric motor 13, and the cart can easily and reliably move after the runaway prevention brake state is released.

[0059] Furthermore, when the maintenance cart 1 needs to be stopped suddenly while traveling due to the detachable battery-powered electric motor 13 being turned on, the driver depresses the brake pedal 17g of the brake section 17 with his foot and pulls the core wire 17h1 that passes through the normal brake cover 17h2 of the normal brake wire 17h connected to the brake pedal 17g.

[0060] Then, when the force point end 17d2 side of the normal brake lever 17d is pulled by the core wire 17h1 passing through the normal brake cover 17h2 of the normal brake wire 17h from the released state of the runaway brake and normal brake shown in Figure 17, the normal brake lever 17d rotates clockwise around the pivot shaft 17d1 as shown in Figure 18, closing the brake shoes 17f, 17f to clamp the brake disc 17e and apply the brakes to the rear wheels 11c2, 11c2.

[0061] Furthermore, when the operating lever 14b2 is raised, that is, the operating lever 14b2 is returned counterclockwise without stepping on the brake pedal 17g of the brake unit 17, the detachable battery-powered electric motor 13 is switched from the ON state to the OFF state as shown in FIG.

[0062] However, since the detachable battery-powered electric motor 13 uses an electric motor for an agitator, the maintenance cart 1 can still move due to inertia even if the detachable battery-powered electric motor 13 is switched from the on state to the off state, and therefore, by further raising the operating lever 14b2 to return to the state shown in Figure 12, it is possible to return to the runaway prevention brake state as shown in Figure 13, thereby causing the brake unit 17 to function and apply the brakes.

[0063] <Summary of the track maintenance cart 1 according to the first embodiment of the present invention> As described above, the track maintenance cart 1 of embodiment 1 of the present invention is provided with front wheels 11b2, 11b2 and rear wheels 11c2, 11c2, and is equipped with a cart body 11 that carries an occupant and travels on the rail R, a detachable battery type electric motor 13 that is mounted on the cart body 11 and rotates the shaft 13a2 with a current supplied from a detachable battery 13b attached to the electric motor body 13a, a traveling control unit 14 that controls the on / off of the detachable battery type electric motor 13, and a rotation transmission mechanism unit 16 that transmits the rotation to the front wheels 11b2, 11b2 when the shaft 13a2 of the detachable battery type electric motor 13 rotates under the control of the traveling control unit 14, thereby causing the cart body 11 to travel on the rail.

[0064] Therefore, the battery-powered electric motor 13 rotates the shaft 13a2 by supplying current from the rechargeable battery 13b attached to the electric motor body 13a, which rotates the front wheels 11b2, 11b2 and causes the maintenance cart 1 to run, eliminating the need for wiring to supply current from the rechargeable battery 13b to the motor, and enabling the cart to run on railway rails with a simple structure.

[0065] Furthermore, the track maintenance cart 1 of embodiment 1 according to the present invention is equipped with a brake unit 14 that maintains the runaway prevention braking state in which the rear wheels 11c2, 11c2 are braked by the first tension spring 14g even in a brake pedal non-operation state in which the brake pedal 17g that is operated when applying the normal brakes is not operated, and when switching the detachable battery-powered electric motor 13 from an off state to an on state, the travel control unit 14 is configured to control the brake unit 17 to first release the runaway prevention braking state, and then switch the detachable battery-powered electric motor 13 to the on state after the runaway prevention braking state is released.

[0066] Therefore, when switching the detachable battery-powered electric motor 13 from an off state to an on state, the runaway prevention braking state by the brake unit 17 is released first, and after the runaway prevention braking state is released, the detachable battery-powered electric motor 13 is switched to the on state, so the driver can easily and reliably drive after the runaway prevention braking state is released without having to perform complicated operations and without placing any extra load on the detachable battery-powered electric motor 13.

[0067] In addition, in the track maintenance cart 1 of embodiment 1 of the present invention, the cart body 11a is provided with seats 11c3, 11c3 for passengers to sit on, and a handle post portion 12 that is provided forward of the seats 11c3, 11c3 and is equipped with a battery-powered electric motor 13 and a driving control unit 14.

[0068] Therefore, in the track maintenance cart 1 of embodiment 1 according to the present invention, the important battery-powered electric motor 13 and driving control unit 14 are concentrated in the handle post portion 12 located forward of the seats 11c3, 11c3, thereby improving operability, maintainability, etc.

[0069] In the track maintenance cart 1 according to the first embodiment of the present invention, the battery-powered electric motor 12 is provided with a drive source switch 13a1 for turning the battery-powered electric motor 13 on or off, and a drive source switch on / off operation mechanism 15 for operating the drive source switch 13a1. The travel control unit 14 is provided with a travel control base unit 14a provided on the handle post unit 12, a brake / drive source control cam plate 14b rotatably attached to the travel control base unit 14a and having an operation lever 14b2 operated by a driver attached thereto, and a drive source switch 14b for turning on or off the drive source switch 13a1 of the detachable battery-powered electric motor 13 by operating the drive source switch on / off operation mechanism 15 via a drive source switch on / off wire 14e connected to the application point side. and a runaway prevention brake release link 14c which is rotatably provided on the driving control base portion 14a and connected to a runaway prevention brake release lever which releases the runaway prevention brake state of the brake portion 17 via a runaway prevention brake vertical wire 17i connected to the application point side. When the occupant operates the operation lever 14b2 and the brake / driving source control cam plate 14b rotates relative to the driving control base portion 14a, the runaway prevention brake state of the brake portion 17 is first released via the runaway prevention brake release link 14c and the runaway prevention brake vertical wire 17i, and then the driving source switch on / off operation mechanism portion 15 is operated via the driving source switch on / off link 14d and the driving source switch on / off wire 14e to turn on the driving source switch 13a1.

[0070] Therefore, the traveling control unit 14 can first release the runaway prevention brake state by using the physical structures such as the traveling control base unit 14a, the brake / driving source control cam plate 14b, the runaway prevention brake release link 14c, and the driving source switch on / off link 14d, and then switch the detachable battery-powered electric motor 13 to the on state to allow traveling.As a result, a track maintenance cart 1 can be provided with a runaway prevention brake function and a normal brake function with a simple structure, thereby reducing costs.

[0071] In addition, in the track maintenance cart 1 of embodiment 1 according to the present invention, the brake / driving source control cam plate 14b is provided with a rotation prevention stopper 14b5 which abuts against the traveling control base portion 14a to stop the rotation of the brake / driving source control cam plate 14b after the occupant operates the operating lever 14b1 to rotate it relative to the traveling control base portion 14a and turn on the driving source switch 13a1.

[0072] Therefore, by preventing excessive rotation of the brake / driving source control cam plate 14b by the rotation prevention stopper 14b5, excessive opening of the brake shoes 17f, 17f in the brake section 17 and excessive rotation of the eccentric rotor 15b in the driving source switch on / off operation mechanism section 15 can be prevented, so that braking by the brake pedal 17g can be reliably ensured when the track maintenance cart 1 is traveling, and the on state of the detachable battery-type electric motor 13 can be reliably ensured, thereby ensuring smooth and stable traveling of the track maintenance cart 1. In particular, since this track maintenance cart 1 uses the eccentric rotor 15b rotating about the eccentric rotating shaft 15b1 to switch the driving source switch 13a1 on / off, it is possible to reliably prevent erroneous operation from the off state to the on state due to excessive rotation of the eccentric rotor 15b.

[0073] In addition, in the maintenance cart 1 of embodiment 1 of the present invention, a detachable battery-powered electric motor 13 is attached facing downward to the upper end of the handle post portion 12, and the handle post portion 12 is hollow and provided with a post rotation transmission shaft 12b that is connected to the shaft 13a2 of the detachable battery-powered electric motor 13, and is configured so that the rotation of the shaft 13a2 of the detachable battery-powered electric motor 13 is transmitted to the front wheels 11b2, 11b2 via the post rotation transmission shaft 12b to rotate them.

[0074] Therefore, in the track maintenance cart 1 of embodiment 1 of the present invention, the mounting position of the detachable battery-powered electric motor 13 is at the upper end of the handle post portion 12, which is at a high position, making it easy to replace the detachable battery 13b and to maintain the detachable battery-powered electric motor 13, thereby improving work efficiency and maintenance efficiency, etc.

[0075] In addition, in the track maintenance cart 1 of the first embodiment according to the present invention, a handle portion 12d to be grasped by the driver is attached to female screw holes provided on both sides of a commercially available detachable battery-powered electric motor 13.

[0076] Therefore, in the track maintenance cart 1 of embodiment 1 of the present invention, it is possible to replace the handle portion of a commercially available detachable battery-powered electric motor 13 and attach a new, longer handle portion 12d for operating the track maintenance cart 1, thereby reducing manufacturing costs, etc.

[0077] In addition, in the track maintenance cart 1 of embodiment 1 of the present invention, handle post connecting plates 12c, 12c, which are handle post connecting parts, are provided at the lower end of the handle post section 12, and the handle post connecting plates 12c, 12c are configured to be detachably attached to handle post mounting plates 11c41, 11c41 provided on the cart body 11a by connecting pins 11c42.

[0078] Therefore, the handle portion 12, which is equipped with important mechanical parts such as the detachable battery-powered electric motor 13 and the driving control unit 14, can be attached and detached from the cart body 11a using the connecting pin 11c42, which also makes it easier to replace the detachable battery 13b and maintain the detachable battery-powered electric motor 13, thereby improving work efficiency and maintenance efficiency, etc.

[0079] Furthermore, in the track maintenance cart 1 of the first embodiment according to the present invention, the rechargeable battery 13b is detachably provided to the detachable battery type electric motor 13. This makes it easy to charge and replace the rechargeable battery 13b, improving the usability of the track maintenance cart 1.

[0080] In addition, in the track maintenance cart 1 of the first embodiment according to the present invention, the detachable battery-powered electric motor 13 uses a battery-powered electric motor for an agitator.

[0081] Therefore, even if the drive source switch 13a1 is turned off, the shaft 3a2 rotates by inertia while the brake unit 17 functions to stop the shaft 3a2, so that the track maintenance cart 1 can be stopped smoothly.

[0082] Furthermore, in the track maintenance cart 1 of the first embodiment according to the present invention, the front wheels 11b2, 11b2 rotated by the detachable battery-powered electric motor 13 are provided with free wheels 11b21, 11b21 of a one-way clutch mechanism that permits rotation only in the forward direction.

[0083] Therefore, even if the driver is not familiar with the operation and is unable to control the rotation of the detachable battery type electric motor 13 well, the maintenance cart 1 can be made to run smoothly. In addition, even when the power supply of the detachable battery type electric motor 13 is turned off, the maintenance cart 1 runs by inertia, and the front wheel axle 11b1, which is the wheel axle, continues to rotate, generating a regenerative current. Therefore, when the power supply is turned off, the regenerative current has nowhere to go, and the load on the detachable battery type electric motor 13 increases, making it more likely to break down. However, since the free wheels 11b21, 11b21 of the one-way clutch mechanism are provided, the maintenance cart 1 runs by inertia even when the power supply of the detachable battery type electric motor 13 is turned off, and it is possible to prevent a breakdown such as burning out of the detachable battery type electric motor 13. Furthermore, even if the maintenance cart 1 is traveling on rail R in an uphill section or the like and is about to back up, the freewheels 11b21, 11b21 of the one-way clutch mechanism prevent the detachable battery-powered electric motor 13 from rotating in reverse, which also prevents failure of the detachable battery-powered electric motor 13.

[0084] In the above description of embodiment 1, a two-seater track maintenance cart 1 having two seats 11c3, 11c3 on the cart body 11 was described. However, the present invention is not limited to this, and the track maintenance cart 1 may have one seat 11c3, or the track maintenance cart 1 may have three or more seats 11c3.

[0085] In addition, in the above description of embodiment 1, a commercially available detachable battery type electric motor 13 is attached to the upper end of the handle post section 12, but the present invention is not limited to this, and a dedicated detachable battery type electric motor may be provided in the handle post section 12 without using a commercially available detachable battery type electric motor 13, and of course an engine driven by fuel such as gasoline or diesel, as described in the following embodiment 2, may be provided at the upper end instead of the detachable battery type electric motor 13.

[0086] In addition, since a commercially available detachable battery type electric motor 13 is used, the description has been given of attaching an external drive source switch on / off operation mechanism 15 to the detachable battery type electric motor 13 and operating the drive source switch 13a1 on / off by operating the operation lever 14b2 of the travel control unit 14, but the present invention is not limited to this, and if a dedicated detachable battery type electric motor with an on / off operation function for the drive source switch 13a1 is prepared, the drive source switch on / off operation mechanism 15 may be omitted.

[0087] In addition, in the above description of embodiment 1, a detachable battery-type electric motor 13 equipped with a detachable battery 13b was used as an example, but the present invention is not limited to this, and as long as the electric motor uses a rechargeable battery, the battery does not have to be detachable.

[0088] Embodiment 2. The track maintenance cart 1 of the above-mentioned embodiment 1 has been described using a handle post section 12 equipped with an electric motor 13 equipped with a removable battery 13b. However, the track maintenance cart 1' of embodiment 2 is configured so that the track maintenance cart 1 of embodiment 1 using the handle post section 12 equipped with the above-mentioned electric motor 13 can be further equipped with a handle post section 12' equipped with an engine 13' that uses gasoline, diesel, or the like as a driving source, thereby making it possible to use both the electric motor 13 and the engine 13'.

[0089] Fig. 19 to Fig. 21 are respectively a front view, a plan view, and a right side view of a track maintenance cart 1' of embodiment 2 according to the present invention. Also, Fig. 22 and Fig. 23 are a side view and a front view of a handle post unit 12' equipped with an engine 13' used in the track maintenance cart 1' of embodiment 2. Furthermore, Fig. 24 and Fig. 25 are respectively a front view and a plan view showing a state in which the two handle post units 12, 12' each equipped with an electric motor 13 and an engine 13' have been removed from a cart body 11' of the track maintenance cart 1' of embodiment 2 according to the present invention.

[0090] In the track maintenance cart 1' of embodiment 2 of the present invention, as shown in Figures 19 to 21, in order to be able to simultaneously mount not only the handle post section 12 equipped with an electric motor 13 equipped with a removable battery 13b, but also a handle post section 12' equipped with an engine 13' fueled by gasoline, diesel, etc., handle post mounting sections 11c4, 11c4 of the same configuration are provided in front of the left and right seats 11c3, 11c3 of the cart body 11, as shown in Figures 24 and 25, so that the handle post section 12 equipped with an electric motor 13 and the handle post section 12' equipped with an engine 13' can be used in combination; the other configurations are the same as those of the track maintenance cart 1 of embodiment 1 described above.

[0091] Here, the handle post section 12' equipped with the engine 13' of the track maintenance cart 1' of the second embodiment of the present invention is, as shown in Figs. 21 to 23, basically a handle post section 12 equipped with an electric motor 13 equipped with a removable battery 13b, and an engine 13' having an engine body 13a' that rotates a shaft 13a2' with gasoline or the like supplied from a fuel tank 13b' instead of the electric motor 13. Since the handle post section 12' uses the engine 13', it is configured to transmit a rotational force to the post rotation transmission shaft 12b via a well-known reducer 12e, a one-way clutch section 12f, a chuck section 12b1, etc., and the other configurations are the same as those of the handle post section 12 of the track maintenance cart 1 of the first embodiment described above, and the handle post section 12 having the same configuration as that of the handle post section 12 of the first embodiment is used in the second embodiment as well.

[0092] Therefore, in the track maintenance cart 1' of embodiment 2 of the present invention, as shown in Figures 23 and 24, two handle post mounting portions 11c4 of embodiment 1 are provided on the front wheel axle 11b of the cart body 11, so that two handle post portions 12, 12' can be mounted simultaneously, and runaway prevention brake wire direction conversion links 17j, 17j' are rotatably provided on the cart body 11a near the two handle post portions 12, 12' for releasing the runaway prevention brake state, etc.

[0093] Furthermore, when traveling using the handle post section 12 equipped with the electric motor 13, and when traveling using the handle post section 12' equipped with the engine 13', the cart is normally in the runaway prevention brake state, and therefore, as in the case of embodiment 1, the handle post section 12 equipped with the electric motor 13 has a core wire 17i1 of the runaway prevention brake vertical wire 17i connected to the upper end of the runaway prevention brake wire direction conversion link 17j rotatably supported on the cart body 11a as shown in Figure 1, and its lower end is connected to the core wire 17k1 of the runaway prevention brake horizontal wire 17k connected to the runaway prevention brake lever 17bb of the brake section 17 (see Figure 13, etc.), thereby providing the cart with an anti-runaway brake function similar to that of the maintenance cart 1 of embodiment 1 described above.

[0094] In contrast, the handle post section 12' equipped with the engine 13' is different from the handle post section 12 equipped with the electric motor 13 in that it does not have the travel control section 14 or the drive source switch on / off operation mechanism section 15, etc., and does not have the runaway prevention brake vertical wire 17i because it travels by directly driving the engine 13'. Therefore, the core wire 17i1 of the runaway prevention brake vertical wire 17i is not connected to the upper end of the runaway prevention brake wire direction conversion link 17j'.

[0095] However, the lower end of the anti-runaway brake wire direction change link 17j' is connected to the core wire 17k1 of the anti-runaway brake horizontal wire 17k, which is connected to the anti-runaway brake lever 17b of the brake section 17 (see Figure 13, etc.) as shown in Figure 21, thereby providing the anti-runaway brake release function similar to the track maintenance cart 1 of the above-mentioned embodiment 1.

[0096] Therefore, for example, as shown in Figure 26, when an occupant riding on a maintenance cart 1' of embodiment 2 of the present invention steps on the upper end of the runaway prevention brake wire direction changing link 17j' with his / her foot or the like, the runaway prevention brake wire direction changing link 17j' rotates clockwise and pulls the core wire 17k1 of the runaway prevention brake horizontal wire 17k connected to the lower end of the runaway prevention brake wire direction changing link 17j' in the leftward direction in Figure 26, thereby pulling the runaway prevention brake lever 17b to which the core wire 17k1 of the runaway prevention brake horizontal wire 17k is connected as shown in Figure 20, thereby releasing the runaway prevention brake state, and the occupant can move his / her foot or the like off the runaway prevention brake wire direction changing link 17j' to switch to the runaway prevention brake state.

[0097] Therefore, in the track maintenance cart 1' of embodiment 2 of the present invention, for example, the handle post portion 12' equipped with the engine 13' is used when traveling long distances to a work site, and even after arriving at the work site, the handle post portion 12 equipped with the electric motor 13 can be used when performing track maintenance work, particularly when working in tunnels, performing inspection and measurement work, or when performing work that requires a lot of vibration and noise, such as nighttime work in urban areas.

[0098] As explained in the first embodiment, the handle post mounting portion 11c4 is configured to allow the handle post section 12 to be detachably attached, and therefore the two handle post mounting portions 11c4, 11c4' in the second embodiment also allow the handle post section 12 equipped with an electric motor 13 and the handle post section 12' equipped with an engine 13' to be detachably attached, and the handle post section 12 and the handle post section 12' can be swapped between the left and right, or only either the handle post section 12 or the handle post section 12' can be connected to either the left or right handle post mounting portion 11c4.

[0099] Therefore, depending on the track maintenance site and the content of the track maintenance work, it is of course possible to remove the handle post portion 12' mounting the engine 13' and attach only the handle post portion 12 mounting the electric motor 13, or conversely, remove the handle post portion 12 mounting the electric motor 13 and attach only the handle post portion 12' mounting the engine 13' to use the track maintenance cart 1' of embodiment 2.

[0100] Therefore, according to the track maintenance cart 1' of embodiment 2 of the present invention, the handle post portion 12 equipped with the electric motor 13 and the handle post portion 12' equipped with the engine 13' are detachably provided, so that the same effects can be obtained as with the track maintenance cart 1 of embodiment 1 which uses the handle post portion 12 equipped with the electric motor 13.

[0101] Furthermore, by selectively using both the handle post portion 12 equipped with the electric motor 13 and the handle post portion 12' equipped with the engine 13', it is possible to select and use the electric motor 13 or the engine 13' depending on the distance traveled, the location of the track maintenance work, and even the time of day, etc., thereby making it possible to further improve usability and workability compared to the track maintenance cart 1 of embodiment 1. [Explanation of symbols]

[0102] 1.1' Track maintenance cart 11 Cart body 11a Cart body frame 11b1 Front wheel axle (driving wheel axle) 11b2,11b2 Front wheels (drive wheels) 11b21,11b21 freewheel 11c1 rear wheel axle 11c2,11c2 rear wheel 11c3,11c3 sheet 11c4,11c4' Handle post attachment part 11c41,11c41 Handle post mounting plate 11c42 connecting pin 12,12' Handle post section 12a Hollow post section 12b Post rotation transmission shaft 12b1 Chuck part 12b2 Drive bevel gear connection 12c Handle post connection plate 12d Handle 12e reducer 12f One-way clutch part 13 Detachable battery-powered electric motor 13a Electric motor body 13a1 Drive source switch 13a2 shaft 13b Removable Battery 13' Engine 13a' Engine body 13b' Fuel tank 13a2' shaft 14 Driving control unit 14a Driving control base unit 14b Brake / drive source control cam plate 14b1 Rotating shaft 14b2 Operating lever 14b3 Link contact for release of anti-runaway brake 14b4 Drive source switch on / off link abutment 14b5 Anti-rotation stopper 14c Anti-runaway brake release link 14d Drive source switch on / off link 14e Drive switch on / off wire 14g First tension spring 15 Drive source switch on / off operation mechanism 15a Operation board 15b Eccentric rotor 15b1 Eccentric rotating shaft 15b2 Eccentric rotor lever 16 Rotation transmission mechanism 16a Bearing section 16b Connection part 16c Drive bevel gear 16d Driven bevel gear 17 Brake section 17a Brake base part 17b Anti-runaway brake lever 17c Second tension spring 17d Normal brake lever 17e Brake disc 17f Brake shoe 17g Brake pedal 17h Normal brake wire 17h1 core wire 17h2 Normal brake cover 17i Runaway prevention brake vertical wire (runaway prevention brake wire) 17i1 core wire 17i2 Runaway prevention brake cover 17j,17j' Anti-runaway brake wire direction change link 17k Runaway prevention brake horizontal wire (runaway prevention brake wire) 17k1 core wire 17k2 Runaway prevention brake cover 17m piston rod

Claims

1. a cart body that runs on a rail by rotating drive wheels via a rotation transmission mechanism; A maintenance cart having a handle post portion provided on the cart body and having a handle portion to be gripped by an occupant, The handle post portion further includes: A driving source which is an electric motor or an engine that rotates the post rotation transmission shaft; A track maintenance cart is characterized in that it is provided with a travel control unit that controls the rotation of the drive wheel via the post rotating shaft and the rotation transmission mechanism by controlling the on / off of the drive source, thereby controlling the travel of the track maintenance cart.

2. 2. The track maintenance cart according to claim 1, Furthermore, a brake unit is provided that maintains a runaway prevention brake state by applying the brakes by an elastic body even in a state where the brake pedal is not operated, The traveling control unit is This track maintenance cart is configured such that, when the drive source is switched from an off state to an on state, the brake unit is controlled to first release the runaway prevention brake state, and then the drive source is switched to the on state after the runaway prevention brake state is released.

3. 3. The track maintenance cart according to claim 2, The driving source includes: A switch for turning the driving source on or off; a drive source switch on / off operation mechanism for operating the drive source switch, The driving control unit includes: A travel control base portion provided on the handle post portion; a cam plate for controlling a brake and a drive source, which is rotatably attached to the travel control base portion and to which the operation lever operated by a rider is attached; a drive source switch on / off link that is rotatably provided on the travel control base portion and that operates the drive source switch on / off operation mechanism portion via a drive source switch on / off wire connected to a point of application side to turn on or off the drive source switch of the drive source; a runaway prevention brake release link that is rotatably provided on the travel control base portion and is connected to a runaway prevention brake release lever that releases the runaway prevention brake state by the brake portion via a runaway prevention brake wire that is connected to a point of application, The brake / drive source control cam plate is A track maintenance cart characterized in that, when an occupant operates the operating lever to rotate it relative to the travel control base unit, the runaway prevention brake state set by the brake unit is first released via the runaway prevention brake release link and the runaway prevention brake wire, and then the drive source switch is turned on by operating the drive source switch on / off operation mechanism unit via the drive source switch on / off link and the drive source switch on / off wire.

4. 4. The track maintenance cart according to claim 3, A track maintenance cart characterized in that the brake / drive source control cam plate is provided with a rotation prevention stopper that abuts against the travel control base portion to stop the rotation of the brake / drive source control cam plate after an occupant operates the operating lever to rotate it relative to the travel control base portion and turn on the drive source switch.

5. 2. The track maintenance cart according to claim 1, A track maintenance cart characterized in that the shaft of the drive source is attached to the upper end of the handle post portion so as to face downward, the handle post portion is hollow and has a post rotation transmission shaft connected to the shaft, and the drive wheel is rotated via the post rotation transmission shaft and the rotation transmission mechanism.

6. 2. The electric cart according to claim 1, The cart body has a drive wheel provided on a drive wheel shaft that rotates via the rotation transmission mechanism, and a handle post mounting portion is provided on the drive wheel shaft, An electric cart characterized in that a handle post connecting portion is provided at a lower end of the handle post portion, the handle post connecting portion is detachably attached to the handle post mounting portion, and the post rotation transmission shaft of the handle post portion rotates the drive wheel via the rotation transmission mechanism portion and the drive wheel shaft.

7. 7. The electric cart according to claim 6, A track maintenance cart characterized in that the drive wheel is provided with two handle post mounting portions, and the handle post connecting portions of the handle post section are detachably connected to the two handle post mounting portions, respectively.

8. 2. The track maintenance cart according to claim 1, A track maintenance cart characterized in that the driving source is a battery-powered electric motor that rotates a shaft by current supply from a rechargeable battery attached to the electric motor body.

9. The track maintenance cart according to claim 8, The battery-powered electric motor is a battery-powered electric motor for an agitator, and is configured so that the shaft rotates by inertia even when the power is turned off.

10. In the electric cart according to any one of claims 1 to 9, A track maintenance cart characterized in that the drive wheels rotated by the drive source are provided with one-way clutch type free wheels that only permit rotation in the forward direction.

Images