Track maintenance support cart

Abstract

To provide a track maintenance work support cart that not only transports track maintenance materials and equipment, but also reduces the burden on workers at work sites. [Solution] A cart body (11) has front and rear wheels on the left and right that roll on left and right rails, respectively, a support column (18) that stands upright on the cart body (11), and a pivot support section (18b4) that allows the pillar (18) to swing vertically around a pivot bolt (19c) inserted into a pivot shaft insertion hole provided at the top of the pillar (18), with a pivot shaft insertion hole between the front and rear ends attached to the support column (18) so that it can swing. Track maintenance equipment (3) is attached to the front side of the pivot shaft insertion hole, while the upper hook (20b) of a spring balancer (20) is engaged with the rear end side of the pivot shaft insertion hole, and a work support rod (19) is provided, and the lower hook (20d) of the spring balancer (20) is engaged with the lower hook engaging piece (18b5) of the pillar (18).

Description

[Technical Field]

[0001] This invention relates to a track maintenance support cart, a track trolley that runs on railway rails and supports track maintenance work using heavy track maintenance equipment such as hand tie tampers. [Background technology]

[0002] BACKGROUND ART Conventionally, when performing track maintenance work, track trolleys have been used to transport track maintenance materials, track maintenance equipment, workers, etc. by running on railway rails (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-331927 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the track trolley described in the above-mentioned Patent Document 1 is simply intended to carry and transport maintenance materials, maintenance equipment, workers, etc., and is not used during maintenance work at work sites.Therefore, it was desired to use it during maintenance work to reduce the burden on workers.

[0005] In particular, there are currently problems with personnel shortages and an aging workforce, and many maintenance equipment, such as hand tie tampers, are heavy, so the use of track trolleys is desired.

[0006] Therefore, this invention was developed with an eye on these problems, and its purpose is to provide a track maintenance support cart that can not only transport track maintenance materials, track maintenance equipment, workers, etc., but also reduce the burden on workers at the work site. [Means for solving the problem]

[0007] In order to solve the above problem, the track maintenance work support cart of the present invention comprises a cart body with front and rear wheels on the left and right sides that roll on left and right rails, a support pillar erected on the cart body, a swing support part that supports a horizontally extending swing shaft provided at the top of the pillar as the center of rotation, and a fulcrum part between the front and rear ends that is swingably attached via the swing shaft, and a work support rod with an equipment hanging part to which track maintenance equipment is attached further towards the front side of the fulcrum part, and an upper hook locking part to which an upper hook provided on the balancer body of the spring balancer engages further towards the rear side of the fulcrum part, and the support pillar is characterized in that it is provided with a lower hook locking part to which a lower hook at the end of the wire extending from the spring balancer engages. In addition, the track maintenance work support cart of the present invention is also characterized in that the support pillars have a lower support pillar fixed to the cart body, and an upper support pillar that is rotatable relative to the lower support pillar with its longitudinal direction as a rotation axis, and has the swing support part provided at the top and the lower hook provided at the bottom. Furthermore, in the track maintenance work support cart of the present invention, the work support rod comprises a work support rod main body having the equipment hanging portion at its tip end and the upper hook engaging portion at its rear end, and a hollow rod main body support portion having the fulcrum portion provided thereon, and the work support rod main body is provided with a plurality of balance adjustment holes spaced apart between the equipment hanging portion and the upper hook engaging portion to adjust the fore-and-aft balance of the work support rod main body, while the rod main body support portion is provided with a balance adjustment pin insertion hole into which a balance adjustment pin is inserted in alignment with any one of the plurality of balance adjustment holes in the work support rod main body. The track maintenance work support cart according to the present invention is also characterized in that a plurality of the equipment hanging portions are provided at intervals on the tip end side of the work support rod body. Furthermore, the track maintenance work support cart according to the present invention further comprises a driving handle post section provided on the cart body with a handle section for the occupant to grasp, and the driving handle post section is provided with a drive source which is an electric motor or engine that rotates at least one of the front wheels or rear wheels of the cart body via a rotation transmission mechanism section, and a travel control section which controls the rotation of the front wheels or rear wheels of the cart body via the rotation transmission mechanism section by controlling the on / off of the drive source, thereby controlling the travel of the track maintenance work support cart. The track maintenance work support cart according to the present invention is also characterized in that the track maintenance equipment is a hand tamper that tampers crushed stone on the track. [Effects of the Invention]

[0008] The track maintenance work support cart of this invention has a support pillar that stands upright on the cart body, and a fulcrum part between the front and rear ends that is swingably attached via the pivot shaft to a swing support part that swings vertically around a horizontally extending pivot shaft provided at the top of the support pillar, and track maintenance equipment is attached to the front end side of the fulcrum part, while a work support rod has one end of a spring balancer connected to the rear end side of the fulcrum part, and the other end of the spring balancer is connected to the support pillar. Therefore, even when performing track maintenance work outdoors using heavy track maintenance equipment, the track maintenance work support cart of this invention makes it possible to hang the heavy track maintenance equipment using a spring balancer attached to the track maintenance work support cart, thereby reducing the burden on the track maintenance worker. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a side view showing a state in which a hand tie tamper is connected to a track maintenance support cart according to a first embodiment of the present invention. FIG. [Figure 2] 1 is a plan view showing a state in which a hand tie tamper is connected to a track maintenance support cart according to a first embodiment of the present invention. FIG. [Figure 3]1 is a front view showing a state in which a hand tie tamper is connected to a track maintenance support cart according to a first embodiment of the present invention. FIG. [Figure 4] 1 is a rear view showing a state in which a hand tie tamper is connected to a track maintenance support cart according to a first embodiment of the present invention. FIG. [Figure 5] 1 is a side view showing a connection state between a support column and a work support rod that constitute a track maintenance work support cart according to a first embodiment of the present invention. [Figure 6] 1A and 1B are a plan view and a right side view, respectively, showing the connection state of the support pole and the work support rod that constitute the track maintenance work support cart of the first embodiment according to the present invention. [Figure 7] 1A and 1B are front views of a lower support pillar and an upper support pillar that constitute the support pillars of a track maintenance work support cart according to a first embodiment of the present invention. [Figure 8] 1A and 1B are front views of a rod body support portion and a work support rod body that constitute the work support rod of the track maintenance work support cart of the first embodiment according to the present invention. [Figure 9] 1 is a side view showing a state in which a track maintenance support cart according to a first embodiment of the present invention is traveling on a rail and a hand tie tamper is connected to a support rod. FIG. [Figure 10] 1 is a side view showing a state in which the track maintenance support cart of the first embodiment according to the present invention has traveled on the rails, arrived at the work site, and lowered the hand tie tamper connected to the work support rod. [Figure 11] FIG. 1 is a front view showing a state in which a track maintenance support cart according to embodiment 1 of the present invention is traveling on rails, arrives at a work site, and lowers a hand tamper connected to a work support rod to perform tamping work on crushed stone. [Figure 12] FIG. 1 is a plan view showing a state in which the track maintenance work support cart of the first embodiment according to the present invention is traveling on the rail, arriving at the work site, and the work support rod is rotated horizontally to move the hand tie tamper to the opposite side of the rail. [Figure 13]1 is a side view showing the connection state between the work support rod and the support pole in the track maintenance work support cart of the first embodiment according to the present invention when the track maintenance equipment suspended from the work support rod becomes heavy. FIG. [Figure 14] 1 is a side view showing the connection state between the work support rod and the support pole when the track maintenance equipment suspended from the work support rod is lighter in the track maintenance work support cart of the first embodiment according to the present invention. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0010] A track maintenance support cart 1 according to a first embodiment of the present invention will be described in detail below with reference to the accompanying drawings. Note that the first embodiment described below is merely an example of the present invention, and the present invention is not limited to the track maintenance support cart 1 according to the first embodiment, but can be modified as appropriate within the scope of the technical concept of the present invention.

[0011] <Configuration of track maintenance support cart 1 according to embodiment 1> The track maintenance work support cart 1 of embodiment 1 of the present invention 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 4, etc., is configured with a cart body 11, a driver's handle post section 12, a detachable battery-powered electric motor 13, a travel control section 14, a rotation transmission mechanism section 15, a brake section (not shown) with a brake pedal 16, a passenger seat handle post section 17, a support column 18, a work support rod 19, a spring balancer 20, etc., and the components other than the passenger seat handle post section 17, the support column 18, the work support rod 19, and the spring balancer 20 have the same functions as the components disclosed in Patent Publication No. 2025-20003, so detailed explanations thereof will be omitted.

[0012] (Cart body 11) The cart body 11 is composed of front wheels 11b, 11b connected to the front and rear of the cart body frame 11a, which is made of steel materials such as square timber and square pipes joined by welding or bolts, etc., by front wheel axles 11b1, rear wheels 11c, 11c connected to the rear wheel axles 11c1, a driver's seat 11c3 where two occupants including the driver can sit, and a passenger seat 11c4, etc.

[0013] The front wheels 11b, 11b are drive wheels rotated by a detachable battery-powered electric motor 13 mounted on the top of the steering handle post 12, and are provided with a freewheel or the like with a one-way clutch mechanism that allows rotation only in the forward direction.

[0014] Although not shown, the cart body 11 is provided with a headlight, a horn, a taillight, etc., and the headlight and the horn may of course be provided on the driver's handle post portion 12.

[0015] (Handle post part 12) The handle post section 12 stands up from the cart body 11 and has a handle section 12a at the top that the driver grasps, as well as a detachable battery-powered electric motor 13 and a driving control section 14.It also has a post rotation transmission shaft (not shown) that transmits the rotation of the detachable battery-powered electric motor 13 to the rotation transmission mechanism section 15.

[0016] (Detachable battery-powered electric motor 13) The detachable battery-type electric motor 13 is composed of an electric motor body that rotates the shaft by turning the drive source switch on / off, and a detachable battery that is detachably attached to the electric motor body and supplies drive current to the electric motor body.

[0017] (Travel control unit 14) The travel control unit 14 is provided on the upper part of the driving handle post unit 12, and controls the on / off of the detachable battery-powered electric motor 13 and the release of the brake of the brake unit (not shown).

[0018] (Rotation transmission mechanism 15) The rotation transmission mechanism 15 is configured to include a drive bevel gear provided at the lower end of a post rotation transmission shaft provided in the driving handle post 12, and a driven bevel gear provided on the front wheel axle 11b1 that meshes with the drive bevel gear, and is configured so that by operating the driving control unit 14, the rotation of the detachable battery-type electric motor 13 is transmitted via the post rotation transmission shaft in the handle shaft 12 and the rotation transmission mechanism 15 to rotate the front wheels 11b, 11b, which are the drive wheels.

[0019] (Brake pedal 16) The brake pedal 16 (see FIG. 1) is a mechanism that applies the brakes to the rear wheels 11c, 11c provided at both ends of the rear axle 11c1 by the driver stepping on it and the brake shoes clamping the brake disc provided on the rear axle 11c1.

[0020] (Passenger seat handle post 17) The passenger seat handle post portion 17 is a handle for a passenger seated in the auxiliary seat 11c4, and is provided with a handle portion 17a that is grasped by an operator.

[0021] (post 18) As shown in Figures 1 to 4, the support pillar 18 is composed of a lower support pillar 18a that is fixed upright on the frame of the cart body 11, and an upper support pillar 18b that is mounted on the lower support pillar 18a and is rotatable around the longitudinal direction (axial direction) of the lower support pillar 18a as the rotation axis.

[0022] As shown in FIG. 7(a), the lower support 18a is a pipe-shaped member having a hollow portion 18a1, and is provided at its lower portion with a base portion 18a2 and reinforcing members 18a3, 18a3.

[0023] The upper support 18b is a member having an inner diameter approximately the same as that of the hollow portion 18a1 of the lower support 18a, and has a flange portion 18b3 at a point 1 / 3 of the height from the lower end, and is composed of an upper support insertion portion 18b1 below the flange portion 18b3, and an upper support protrusion portion 18b2 that protrudes above the flange portion 18b3.

[0024] As shown in FIGS. 6(b) and 6(c), the upper support insertion portion 18b1 is inserted into the hollow portion 18a1 of the lower support 18a up to the flange portion 18b3, and is supported rotatably around the longitudinal direction thereof as a rotation axis.

[0025] The upper support protrusion 18b2 protrudes from the upper part of the lower support 18a together with the flange 18b3, and at its upper end is provided a swing support portion 18b4 that rotatably supports the work support rod 19, while at its lower end is provided a lower hook locking piece 18b5 that is welded to the outer surface of the upper support protrusion 18b2 and the flange 18b3 and to which the lower hook 20d (described later) of the spring balancer 20 is hooked via a hanging device 21a such as a shackle.

[0026] (Work support rod 19) The work support rod 19 is composed of a rod body support part 19a shown in FIG. 8(a) and a work support rod body 19b shown in FIG. 8(b).

[0027] The rod body support portion 19a is composed of a hollow rod body support cylinder portion 19a1 through which the work support rod body 19b passes, and a fulcrum portion 19a2 that is provided below the rod body support cylinder portion 19a1 and is connected to a swing support portion 18b4 (see FIG. 7(b)) on the top of the upper support column 18b of the support column 18 via a pivot shaft bolt 19c (see FIG. 6(b) etc.) so as to be rotatable in the vertical direction, i.e., swingable, as shown in FIGS. 1 to 4. The other end of the pivot shaft bolt 19c is fastened by a nut 19d as shown in FIG. 6(b), and the pivot shaft is formed by the pivot shaft bolt 19c and the nut 19d.

[0028] The rod main body support cylinder portion 19a1 is provided with a balance adjustment pin insertion hole 19a11 into which a balance adjustment pin 19e is inserted to adjust the balance of the work support rod main body 19b by aligning it with any one of the multiple balance adjustment holes 19b6, 19b7, 19b8 described below of the work support rod main body 19b.

[0029] The fulcrum portion 19a2 is provided with a pivot shaft insertion hole 19a21 into which a pivot shaft bolt 19c such as a pin or bolt is inserted, aligned with the hole in the swing support portion 18b4 (see Figure 7(b)) at the top of the upper support pillar 18b of the support pillar 18, as shown in Figures 1 to 4.

[0030] The work support rod main body 19b is configured as shown in Figure 8(b), and at the tip side, there are multiple (here, for example, four) equipment hanging holes 19b1 to 19b4 spaced apart as equipment hanging sections to which maintenance equipment such as a hand tie tamper 3 is attached via hanging devices 21c, 21d such as shackles, while at the rear end side, there is an upper hook locking hole 19b5 to which an upper hook 20b provided on the balancer main body 20a of the spring balancer 20 described later is locked.

[0031] Furthermore, between the multiple (here, for example, four) equipment hanging holes 19b1 to 19b4 and the upper hook engagement hole 19b5 in the work support rod main body 19b, there are provided multiple (here, for example, three) balance adjustment holes 19b6, 19b7, 19b8 spaced apart to adjust the front-to-back balance of the work support rod main body 19b, and one of the three balance adjustment holes 19b6, 19b7, 19b8 is aligned with the balance adjustment pin insertion hole 19a11 of the rod main body support cylinder portion 19a1 and a balance adjustment pin 19e is inserted to adjust the front-to-back balance of the work support rod main body 19b.

[0032] (Spring balancer 20) The spring balancer 20 is a well-known auxiliary tool that assists in lifting heavy objects, and is composed of a balancer body 20a containing a spring such as a spiral spring, an upper hook 20b provided on the balancer body 20a, a wire 20c connected to the spring inside the balancer body 20a, and a lower hook 20d provided at the tip of the wire 20c.

[0033] The upper hook 20b of the spring balancer 20 is engaged with the upper hook engaging hole 19b5 (see Figures 5 and 8(b), etc.) of the work support rod main body 19b via a hanging device 21b such as a shackle, while the lower hook 20d is engaged with the lower hook engaging piece 18b5 of the upper support pillar protrusion 18b2 of the support pillar 18.

[0034] (Hand Tie Tamper 3) The hand tie tamper 3 is a well-known track maintenance device that compacts crushed stone (ballast) on the track using a beater (blade) 3b that is vibrated by an engine-powered or electric tie tamper body 3a.

[0035] The tie tamper main body 3a is provided with a hanging portion 3c, and in this embodiment, this hanging portion 3c is hung from one of the multiple (here, for example, four) equipment hanging holes 19b1 to 19b4 on the tip side of the work support rod main body 19b via a hanging device 21c such as a shackle or another hanging device 21d.

[0036] <Operation of the Track Maintenance Support Cart 1 of the First Embodiment> Next, the operation of the track maintenance support cart 1 of the first embodiment configured as above will be described.

[0037] First, as shown in FIG. 9, the track maintenance work support cart 1 of the first embodiment is moved to the work site by running the left and right front wheels 11b, 11b and rear wheels 11c, 11c on the rails R, R.

[0038] At that time, the worker sits in the driver's seat 11c3 and the passenger seat 11c3 next to it, and operates the drive source switch of the detachable battery-powered electric motor 13 of the driver's handle post unit 12 and the operation lever 14b1 of the travel control unit 14 to rotate the front wheels 11b, 11b, which are the drive wheels, to travel the track maintenance work support cart 1. When stopping while traveling, the worker depresses the brake pedal 16 (see FIG. 1) of the brake unit (not shown) to apply the brakes and stop the cart.

[0039] Furthermore, the hand tie tamper 3, which is a track maintenance device, may be moved to the work site while hanging from one of the four device hanging holes 19b1 to 19b4 of the work support rod main body 19b as shown in Figure 9, or, although not shown, the hand tie tamper 3 may be removed when moved to the work site and loaded onto the track maintenance work support cart 1 for movement.

[0040] When the worker arrives at the work site, he or she gets out of the driver's seat 11c3 and passenger seat 11c3, grabs the hand tie tamper 3 hanging from the equipment hanging holes 19b1 to 19b4 of the work support rod main body 19b as shown in Figures 10 and 11, lowers the hand tie tamper 3, turns on the power to the hand tie tamper 3, and inserts the beater (blade) 3b vibrated by the tie tamper main body 3a between the crushed stone (ballast) on the tracks, or raises the hand tie tamper 3 and, for example, rotates the work support rod 19 horizontally relative to the support pillar 18 as shown in Figure 12 to change the location of the crushed stone (ballast) to be compacted, thereby performing the work of compacting the crushed stone (ballast).

[0041] Here, when a worker grasps the hand tie tamper 3 and lowers or raises it, the upper hook 20b provided on the balancer body 20a of the spring balancer 20 is engaged with the upper hook engagement hole 19b5 on the opposite side of the equipment hanging holes 19b1 to 19b4 of the work support rod body 19b from which the hand tie tamper 3 is hung, and therefore the auxiliary force of the spring balancer 20 can reduce the burden on the worker.

[0042] (Supporting the weight and size of track maintenance equipment suspended by the work support rod 19) The weight and size of the hand tie tamper 3 also vary depending on the model, and there is also track maintenance equipment other than the hand tie tamper 3, such as a hand grinder for grinding rails, and since the weight and size of each piece of track maintenance equipment differs, if the weight of the track maintenance equipment changes significantly, it becomes necessary to use a spring balancer 20 with the optimal capacity to match the change in weight.

[0043] However, in the track maintenance work support cart 1 of embodiment 1, even if the track maintenance equipment that is suspended from the work support rod 19 and supports track maintenance work using the spring balancer 20 is changed, it may be possible to respond as follows without changing the spring balancer 20.

[0044] (When the weight of track maintenance equipment is slightly changed) If the weight of the track maintenance equipment changes slightly, and balance is achieved when working with a spring balancer 20 of the current capacity, with the hand tie tamper 3 hung from the equipment hanging hole 19b1 at the tip of the work support rod main body 19b as shown in Figures 1 and 9, etc., if the weight becomes slightly heavier than the hand tie tamper 3 currently being used, the balance will be adjusted using the most suitable equipment hanging hole from among the equipment hanging holes 19b2, 19b3, 19b4 that are closer to the support pillar 18 than the equipment hanging hole 19b1 at the tip of the work support rod main body 19.

[0045] (If replacement with a larger capacity spring balancer 20 is required) Even if the maintenance equipment is hung using the equipment hanging hole 19b4, which is closest to the support pillar 18 among the equipment hanging holes 19b1 to 19b4 of the work support rod main body 19, if it becomes necessary to replace the spring balancer 20 with one having a larger capacity than the one currently in use, the position of the fulcrum of the work support rod main body 19b is changed.

[0046] Specifically, for example, as shown in FIG. 13, of the three balance adjustment holes 19b6, 19b7, 19b8 of the work support rod main body 19b, a balance adjustment pin 19e is passed through balance adjustment hole 19b6 at the tip of the work support rod main body 19 and pin hole 18b41 of the swing support part 18b4 at the upper end of the upper support pillar 18b of the pillar 18, thereby reducing the distance from the balance adjustment pin 19e to the equipment hanging holes 19b1 to 19b4 at the tip of the work support rod main body 19, while increasing the distance from the balance adjustment pin 19e to the upper hook engagement hole 19b5 to which the upper hook 20b of the spring balancer 20 is engaged.

[0047] As a result, even if the weight of the maintenance equipment suspended from the equipment suspension holes 19b1 to 19b4 at the tip of the work support rod main body 19 increases, the distance from the balance adjustment pin 19e to the upper hook engagement hole 19b5 of the spring balancer 20 increases, so it is possible to accommodate this without having to replace the spring balancer 20 with one of a larger capacity.

[0048] Incidentally, fine adjustment of the balance can be performed by adjusting the positions of the equipment hanging holes 19b1 to 19b4 at the tip of the work support rod main body 19 for hanging track maintenance equipment.

[0049] (If replacement with a smaller capacity spring balancer 20 is required) Even if maintenance equipment is hung using the equipment hanging hole 19b1 at the most distal end of the equipment hanging holes 19b1 to 19b4 of the work support rod main body 19, if it becomes necessary to replace the spring balancer 20 with one having a smaller capacity than the one currently in use, this can be accommodated to some extent by changing the position of the fulcrum of the work support rod main body 19b.

[0050] Specifically, for example, as shown in FIG. 14, of the three balance adjustment holes 19b6, 19b7, 19b8 of the work support rod main body 19b, a balance adjustment pin 19e is passed through the balance adjustment hole 19b8 on the rear end side of the work support rod main body 19, i.e., the balance adjustment hole 19b5 side, and the pin hole 18b41 of the swing support part 18b4 at the upper end of the upper support column 18b of the column 18, thereby increasing the distance from the balance adjustment pin 19e to the equipment hanging holes 19b1 to 19b4 at the tip of the work support rod main body 19, while reducing the distance from the balance adjustment pin 19e to the upper hook engagement hole 19b5 of the spring balancer 20.

[0051] As a result, even if the weight of the track maintenance equipment suspended from the equipment suspension holes 19b1 to 19b4 at the tip of the work support rod main body 19b becomes lighter, the distance from the balance adjustment pin 19e to the equipment suspension holes 19b1 to 19b4 becomes larger, so it is possible to accommodate this without replacing the spring balancer 20 with one of a larger capacity.

[0052] Incidentally, fine adjustment of the balance can be performed by adjusting the positions of the equipment hanging holes 19b1 to 19b4 at the tip of the work support rod main body 19b from which the track maintenance equipment is hung.

[0053] <Summary of the Track Maintenance Support Cart 1 of the First Embodiment> As described above, the track maintenance work support cart 1 of embodiment 1 of the present invention has a support pillar 18 that is erected on the cart body 11, and a swing support part 18b4 that is swingably attached via a pivot bolt 19c inserted into a pivot shaft insertion hole 19a21 provided at the top of the support pillar 18, and track maintenance equipment such as a hand tie tamper 3 is attached to equipment hanging holes 19b1 to 19b4 on the tip side of the pivot shaft insertion hole 19a21, while a work support rod 19 has an upper hook locking hole 19b5 on the rear end side of the pivot shaft insertion hole 19a21 to which the upper hook 20b of the spring balancer 20 is connected, and the lower hook 20d of the spring balancer 20 is connected to the lower hook locking piece 18b5 of the upper support pillar 18b that constitutes the support pillar 18.

[0054] Therefore, according to the track maintenance support cart 1 of the embodiment of the present invention, even when performing track maintenance work outdoors using heavy track maintenance equipment such as a hand tie tamper 3, it is possible to work using the spring balancer 20 attached to the track maintenance support cart 1, thereby reducing the burden on the track maintenance worker.

[0055] In addition, in the track maintenance work support cart 1 of the embodiment of the present invention, the support pillar 18 is divided into a lower support pillar 18a having a hollow portion 18a1 fixed to the cart body 11, and an upper support pillar 18b having an upper support pillar insertion portion 18b1 inserted into the hollow portion 18a1 of the lower support pillar 18a so as to be rotatable, and having a swing support portion 18b4 at the top and a lower hook locking piece 18b5 at the bottom to which the lower hook 20d of the spring balancer 20 is locked.

[0056] Therefore, when the work support rod main body 19b is rotated to change the work position and horizontally move track maintenance equipment such as the hand tie tamper 3 suspended from its equipment suspension holes 19b1 to 19b4, the upper support pillar 18b on which the lower hook engaging piece 18b5 is provided also rotates along with the horizontal rotation of the work support rod main body 19b, so that the wire 20c of the spring balancer 20 does not get wrapped around the support pillar 18 and the wire 20c does not bend relative to the balancer main body 20a, making it possible to use the spring balancer 20 correctly, thereby reducing the burden on the track maintenance worker.

[0057] In addition, in the track maintenance work support cart 1 according to the embodiment of the present invention, the work support rod 19 includes a work support rod main body 19b having a plurality of equipment hanging holes 19b1 to 19b4 at the tip end and an upper hook locking hole 19b5 at the rear end, and a hollow rod main body support part 19a having a fulcrum part 19a2 swingably connected to the swing support part 18b4. Between the work support rod main body 19b and the work support rod main body 19b, a plurality of balance adjustment holes 19b6, 19b7, 19b8 are provided at intervals to adjust the front-to-rear balance of the work support rod main body 19b, while the rod main body support part 19a is provided with a balance adjustment pin insertion hole 19a11 into which a balance adjustment pin 19e is inserted by aligning it with any one of the balance adjustment holes 19b6, 19b7, 19b8 of the work support rod main body 19b.

[0058] Therefore, even if the weight of the track maintenance equipment to be suspended by the work support rod main body 19b is changed, it is possible to accommodate this without changing the spring balancer 20 by simply changing the balance adjustment holes 19b6, 19b7, 19b8 through which the pivot shaft bolt 19c is passed, in order to align them with the pivot shaft insertion hole 19a21 of the rod main body support part 19a. In this respect, too, the burden on track maintenance workers can be reduced, and costs, etc. can also be reduced.

[0059] Furthermore, in the track maintenance work support cart 1 according to the embodiment of the present invention, a plurality of equipment hanging holes 19b1 to 19b4 are provided at intervals on the tip end side of the work support rod main body 19b.

[0060] Therefore, if the weight of the track maintenance equipment suspended from the tip of the work support rod main body 19b changes slightly, it is possible to accommodate this by suspending the track maintenance equipment from the most suitable of the four equipment suspension holes 19b1 to 19b4 without changing the balance adjustment holes 19b6, 19b7, and 19b8 through which the spring balancer 20 or the pivot shaft bolt 19c pass. This also reduces the burden on track maintenance workers and reduces costs, etc.

[0061] In addition, the track maintenance work support cart 1 of the embodiment of the present invention has a driving handle post section 12 that is provided on the cart body 11 and has a handle section that is grasped by the occupant, and the driving handle post section 12 is provided with an electric motor 13 as a drive source that rotates at least one of the front wheels or rear wheels of the cart body 11 via a post rotation shaft (not shown) and a rotation transmission mechanism section 15, and a travel control section 14 that controls the travel of the track maintenance work support cart 1 by controlling the on / off of the electric motor 13 to control the rotation of the front wheels or rear wheels of the cart body 11 via the post rotation shaft (not shown) and the rotation transmission mechanism section 15.

[0062] Therefore, according to the track maintenance work support cart 1 of the embodiment of the present invention, 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 of the driving handle post portion 12, which rotates the front wheels 11b, 11b and causes the track maintenance cart 1 to move, making it easy to load track maintenance materials, track maintenance equipment, workers, etc. and transport them to the work site, which also reduces the burden on track maintenance workers.

[0063] In addition, in the track maintenance work support cart 1 according to the embodiment of the present invention, a hand tie tamper 3 for tamping down crushed stone as track maintenance equipment is hung from the equipment hanging holes 19b1 to 19b4 at the tip of the work support rod main body 19b.

[0064] Therefore, workers can carry out the work of compacting crushed stone using the heavy hand tie tamper 3 without having to bear the weight of the heavy hand tie tamper 3, thereby reducing the burden on track maintenance workers. [Explanation of symbols]

[0065] 1. Track maintenance support cart 11 Cart body 11a Cart body frame 11b Front wheel 11b1 front wheel axle 11c rear wheel 11c1 rear wheel axle 11c3 Driver's seat 11c4 passenger seat 12 Driving handle post 13 Detachable battery-powered electric motor (drive source) 14 Travel control unit 15 Rotation transmission mechanism 16. Brake pedal 17 Passenger seat handle post 18 Posts 18a Lower support 18a1 Hollow part 18a2 Base 18a3 Reinforcing member 18b Upper post 18b1 Upper support insert 18b2 Upper column protrusion 18b3 Tsubabe 18b4 Swing support part 18b41 pin hole 18b5 Lower hook locking piece 18b51 Lower hook locking hole (lower hook locking part) 19 Work support rod 19a Rod body support part 19a1 Rod body support cylinder 19a11 Balance adjustment pin insertion hole 19a2 Fulcrum part 19a21 Rotating shaft insertion hole 19b Work support rod body 19b1~19b4 Equipment hanging holes (equipment hanging part) 19b5 Upper hook locking hole (upper hook locking part) 19b6, 19b7, 19b8 Balance adjustment holes 19c Pivot bolt (pivot shaft) 19d Nut 19e Balance adjustment pin 20 Spring balancer 20a Balancer body 20b upper hook 20c wire 20d bottom hook 21a~21d Lifting equipment 3 Hand tie tamper (track maintenance equipment) 3a Tie tamper body 3b Beater (Blade)

Claims

1. a cart body having front and rear wheels provided on the left and right sides, which roll on left and right rails, respectively; a support column provided upright on the cart body; The work support rod has a fulcrum part between the front end and rear end, which is attached to a swing support part that supports the horizontally extending swing shaft provided at the top of the support pole as the center of rotation, and a device hanging part to which a track maintenance device is attached is provided on the front end side of the fulcrum part, and an upper hook locking part to which an upper hook provided on the balancer body of the spring balancer is locked is provided on the rear end side of the fulcrum part. A track maintenance support cart characterized in that the support pillar is provided with a lower hook engaging portion to which a lower hook at the end of a wire extending from the spring balancer is engaged.

2. The track maintenance support cart according to claim 1, The support pillars are a lower support column fixed to the cart body; A track maintenance work support cart characterized by having an upper support pillar that is rotatable relative to the lower support pillar with its longitudinal direction as a rotation axis, the swing support part being provided at the top, and the lower hook being provided at the bottom.

3. The track maintenance support cart according to claim 1, The work support rod is a work support rod body having the equipment hanging portion at a tip end and the upper hook engaging portion at a rear end; a hollow rod body support portion provided with the fulcrum portion, The work support rod main body is provided with a plurality of balance adjustment holes spaced apart between the equipment hanging portion and the upper hook engaging portion to adjust the front-to-rear balance of the work support rod main body, A track maintenance work support cart characterized in that the rod body support portion is provided with a balance adjustment pin insertion hole into which a balance adjustment pin is inserted by aligning it with any one of the plurality of balance adjustment holes of the work support rod body.

4. The track maintenance support cart according to claim 3, A track maintenance work support cart characterized in that a plurality of equipment hanging portions are provided at intervals on the tip end side of the work support rod body.

5. The track maintenance support cart according to claim 1, Further, the cart has a driving handle post portion provided on the cart body and provided with a handle portion to be grasped by a rider, The driving handle post section has: a driving source, which is an electric motor or an engine, that rotates at least one of the front wheels or the rear wheels of the cart body via a rotation transmission mechanism; a travel control unit that controls the rotation of the front wheels or rear wheels of the cart body via the rotation transmission mechanism unit by controlling the on / off of the drive source, thereby controlling the travel of the track maintenance work support cart.

6. The track maintenance support cart according to any one of claims 1 to 5, The track maintenance work support cart is characterized in that the track maintenance equipment is a hand tamper that tampers crushed stone on the track.

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