Ladder truck anti-toppling device

Abstract

The utility model discloses an anti-tilting device for a ladder truck, which relates to the technical field of rail grabbing appliances, and comprises a clamping table with traveling wheels, the clamping table can slide on a steel rail by means of the traveling wheels, the clamping table is further provided with a conical guide wheel and a round guide wheel, and the conical guide wheel is connected to the end of a swinging rod assembly which is arranged on the clamping table and can swing. The circular guide wheel is connected to the end part of a liftable sleeve assembly arranged on the clamping table; after the ladder trolley is connected with the connecting rod of the sleeve assembly, the clamping arm assembly and the sleeve assembly correspondingly drive the conical guide wheel and the round guide wheel to be located on the two sides of a steel rail head respectively; the ladder truck can be matched with a traditional ladder truck in the market for use, and rollover of the ladder truck during high-altitude operation is avoided.

Description

Technical Field

[0001] The utility model relates to an anti-tilt device for a ladder vehicle, belonging to the technical field of rail grabbing devices. Background Art

[0002] A ladder truck is a tool used to assist construction workers in aerial work. Since the chassis and body of the ladder truck are made of multiple pipes, it is easy to shake significantly in areas such as superelevation of the outer rail of a railway curve, bridge sections, high roadbed sections, and crosswind sections, resulting in a risk of tipping. After searching, the patent with the announcement number "CN214532756U" discloses a ladder truck anti-tip device, which can effectively solve the above technical problems and thus improve the safety of the ladder truck.

[0003] Similarly, the applicant also designed an anti-tilt device for a ladder truck and filed the following application in this regard. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the utility model provides an anti-tilt device for a ladder truck.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a ladder car anti-tilt device, including a clamping platform with running wheels, the clamping platform can slide on the rail with the help of the running wheels, the clamping platform also has a conical guide wheel and a circular guide wheel, the conical guide wheel is connected to the end of a swingable rocker arm assembly provided on the clamping platform, and the circular guide wheel is connected to the end of a liftable sleeve assembly provided on the clamping platform; after the ladder car is connected to the connecting rod of the sleeve assembly, the clamping arm assembly and the sleeve assembly correspondingly drive the conical guide wheel and the circular guide wheel respectively on both sides of the rail head.

[0006] Preferably, the rocker arm assembly includes a rocker arm seat locked on the side of the clamping platform, a rocker arm with the conical guide wheel fixed at the end is hinged to the rocker arm seat, and a driving arm can drive the rocker arm to swing relative to the rocker arm seat to make the conical guide wheel move away from or close to the rail head.

[0007] Preferably, the driving arm comprises an outer arm formed with a gripping rod and hinged to an inner arm, the end of the outer arm is hinged to the rocker seat, and the end of the inner arm is hinged to the rocker.

[0008] Preferably, the rocker seat and the rocker are correspondingly formed with a stop plate and a stop column, and the driving arm is restricted by the stop plate and the stop column, so that the rocker can swing 90 degrees relative to the rocker seat.

[0009] Preferably, the cone guide wheel is formed with a plug-in column itself, which is plugged into each other through a plug-in column and a plug-in hole formed by the end of the rocker arm.

[0010] Preferably, the sleeve assembly comprises an outer tube and an inner tube which are movably sleeved together, and the inner tube moves up and down in cooperation with an L-shaped groove provided in the outer tube through a pin provided at the top, so that the circular guide wheel fixed at the bottom moves away from or close to the rail head.

[0011] Preferably, the connecting rod can be fastened and hinged to a hinge seat provided at the top of the sleeve assembly, and a clutch tooth is provided on the connecting rod and the hinge seat respectively; when the connecting rod is fastened, the clutch teeth of the two can engage and restrict each other.

[0012] Preferably, the connecting rod further has an extension assembly, which includes an extension rod sleeved and fastened on the outside of the connecting rod, and the ladder truck chassis can be connected to the end of the extension rod to combine itself with the clamping platform.

[0013] Preferably, a supporter is sleeved on the outer side of the extension rod, and the supporter is positioned by a support screw and a positioning nut provided on the extension rod; when the ladder truck chassis is connected to the end of the extension rod, the supporter can support the end.

[0014] The utility model has at least the following benefits:

[0015] 1. It can be used with traditional ladder trucks on the market to prevent the ladder truck from tipping over during high-altitude operations;

[0016] 2. The running wheels are in rolling contact with the rails, which can ensure the smooth running of the ladder car. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a use schematic diagram of the utility model.

[0018] Figure 2 It is a cross-sectional schematic diagram of the utility model.

[0019] Figure 3 It is a structural schematic diagram of the clamp arm assembly.

[0020] Figure 4 It is a schematic diagram of the structure of the extension component.

[0021] Figure 5 It is a schematic diagram of the coordination between the connecting rod and the hinge seat.

[0022] In the figure, 1-clamping platform; 2-travel wheel; 3-clamping arm assembly; 301-rocker seat; 311-stop plate; 302-rocker; 312-stop column; 322-socket; 303-driving arm; 313-outer arm; 323-inner arm; 4-sleeve assembly; 401-outer tube; 411-L-shaped groove; 402-inner tube; 412-pull pin; 403-hinge seat; 5-conical guide wheel; 501-plug-in column; 6-circular guide wheel; 7-connecting rod; 701-positioning hole; 711-front positioning hole; 721-rear positioning hole; 8-clutch tooth; 9-extension assembly; 901-extension rod; 911-alignment hole; 902-support; 903-support screw; 904-positioning nut; 10-rail. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figure 1-Figure 5 As shown: a ladder vehicle anti-tilt device, comprising a clamping platform 1 having an inner cavity and equipped with a running wheel 2, the running wheel 2 being in contact with a rail 10 so that the clamping platform can slide on the rail 10. The left and right sides of the clamping platform 1 are respectively equipped with a clamping arm assembly 3 and a sleeve assembly 4, the clamping arm assembly 3 and the sleeve assembly 4 are correspondingly equipped with a conical guide wheel 5 and a circular guide wheel 6, after the ladder vehicle chassis (not shown in the figure) is connected to the sleeve assembly 4 through a connecting rod 7, the conical guide wheel 5 and the circular guide wheel 6 can be driven by the clamping arm assembly 3 and the sleeve assembly 4 to approach the rail 10, so as to be located on both sides of the rail head of the rail 10 respectively.

[0025] Furthermore, the clamp arm assembly 3 includes a swing rod seat 301, a swing rod 302 and a driving arm 303; Figure 2-Figure 3 As shown, the rocker seat 301 is locked to the side wall of the clamping platform 1 by fasteners, and the rocker 302 with the cone guide wheel 5 fixed at the bottom is hinged on the rocker seat 301. The driving arm 303 has an outer arm 313 and an inner arm 323 which are hinged to each other. The end of the outer arm 313 is hinged to the rocker seat 301, and the end of the inner arm 323 is hinged to the rocker 302. When the holding rod of the outer arm 313 is held and pulled, the driving arm 303 as a whole can drive the rocker 302 to swing relative to the rocker seat 301, so that the cone guide wheel 5 is close to or away from the rail head of the rail 10.

[0026] Specifically, the rocker arm seat 301 is also formed with a stop plate 311, and the rocker arm 302 is formed with a stop column 312; when the driving arm 303 is reciprocated, it will respectively abut against the stop plate 311 and the stop column 312. Due to the restriction of the stop plate 311 and the stop column 312, the driving arm can only drive the rocker arm 302 to swing within a range of 90°.

[0027] Specifically, the cone guide wheel 5 is formed with a plug-in column 501 at its rear end, and a plug-in hole 322 is formed at the bottom end of the rocker arm 302. The cone guide wheel 5 is inserted into the plug-in hole 322 of the rocker arm 302 through the plug-in column 501, and is fixed to the rocker arm 302 by fasteners.

[0028] Furthermore, the sleeve assembly 4 includes an outer tube 401 and an inner tube 402; Figure 1-Figure 2 As shown, the outer tube 401 is of hollow design, which passes through the above-mentioned clamping platform 1 and is fixedly installed, the inner tube 402 is movably sleeved on the inner side of the outer tube 401, and the bottom of the inner tube 402 is locked with the above-mentioned circular guide wheel 6 by fasteners, and the top of the outer tube 401 is provided with an L-shaped groove 411, and the inner tube 402 is fixed with a pin 412 corresponding to the L-shaped groove 411. The pin 412 is normally stuck on the top side of the L-shaped groove 411, so that the circular guide wheel 6 and the rail head of the rail 10 are separated from each other. When the pin 412 is pulled downward, the inner tube 402 slides down to make the circular guide wheel 6 close to the rail head of the rail 10.

[0029] Furthermore, in order to adapt to ladder truck chassis of different specifications and sizes, the connecting rod 7 also has swing and telescopic functions to achieve self-adjustment.

[0030] Furthermore, the swing adjustment function of the above-mentioned connecting rod 7 is realized by being hinged with the hinge seat 102 arranged on the top side of the outer tube 401, and it and the hinge seat 102 are respectively equipped with a clutch tooth 6; when the connecting rod 7 is not tightened, it can slide in the direction of the hinge axis, and at this time the two clutch teeth 6 are separated from each other, and when the connecting rod 7 is tightened by the lateral fasteners, the two clutch teeth 6 will be relatively engaged to enhance the locking limit of the connecting rod 7 and prevent it from loosening.

[0031] Furthermore, the connecting rod 7 has a telescopic adjustment function through its own extension assembly 9; the extension assembly 9 includes an extension rod 901 sleeved on the outside of the connecting rod 7, and the extension rod 901 is locked and fixed to the connecting rod 7 by means of fasteners, thereby replacing the connecting rod 7 for connection and combination with the ladder truck frame.

[0032] Specifically, Figure 2 , Figure 4As shown, the connecting rod 7 and the extension rod 901 are both hollow pipes, and the extension rod 901 can be removed from the connecting rod 7 separately. A positioning hole 911 is formed at the end of the extension rod 901, and two positioning holes 701 are formed on the connecting rod 7, namely the front positioning hole 711 and the rear positioning hole 721. In the extended state, the positioning hole 911 of the extension rod 901 can be matched with any positioning hole 701 and fastened with the help of fasteners. At this time, the ladder vehicle chassis is indirectly combined with the connecting rod 7 by plugging with the extension rod 901; in the retracted state, the extension rod 901 needs to be removed from the connecting rod 7 separately first, and installed in the reverse direction so that its own positioning hole 911 is matched with the front positioning hole 711 of the connecting rod 7, and then fastened. After the extension rod 901 is combined with the connecting rod 7 in this way, the overall length will not exceed the connecting rod 7, and the ladder vehicle chassis can be directly combined with the connecting rod 7.

[0033] Specifically, since the extension rod 901 is fastened only by the fasteners at the end, it is easily compressed and deformed when the other end is plugged into the ladder truck chassis. Therefore, a supporter 902 is also slidably sleeved on the outer side of the extension rod 901, and a support screw 903 is installed on the top of the extension rod 901 along the sliding direction of the supporter 902. The supporter 902 passes through the support screw 903 and is positioned by a positioning nut 904. When the extension rod 901 is plugged into the ladder truck chassis, the supporter 902 is slid to the plug-in position of the two, and the end of the extension rod 901 can be supported by the supporting effect of the support screw 903 to prevent it from falling and deforming.

[0034] The method of use of this design is roughly the same as the prior art. First, the ladder car frame is combined with the connecting rod (or extension rod), and then the driving arm is pulled and the pin is pulled down so that the conical guide wheel and the circular guide wheel are respectively located on both sides of the rail.

[0035] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A ladder vehicle anti-tilt device, comprising a clamping platform with running wheels, the clamping platform can slide on the rails by means of the running wheels, characterized in that: The clamping platform also has a conical guide wheel and a circular guide wheel. The conical guide wheel is connected to the end of a swingable swing arm assembly provided on the clamping platform, and the circular guide wheel is connected to the end of a liftable sleeve assembly provided on the clamping platform. After the ladder car is connected to the connecting rod of the sleeve assembly, the clamping arm assembly and the sleeve assembly drive the conical guide wheel and the circular guide wheel correspondingly and are respectively located on both sides of the rail head.

2. The anti-tilt device for a ladder vehicle according to claim 1, characterized in that: The rocker assembly includes a rocker seat locked on the side of the clamping platform, a rocker with the cone guide wheel fixed at the end thereof being hinged to the rocker seat, and a driving arm can drive the rocker to swing relative to the rocker seat to make the cone guide wheel move away from or close to the rail head.

3. The anti-tilt device for a ladder vehicle according to claim 2, characterized in that: The driving arm comprises an outer arm formed with a gripping rod and hinged to an inner arm, the end of the outer arm is hinged to the swing rod seat, and the end of the inner arm is hinged to the swing rod.

4. The anti-tilt device for a ladder vehicle according to claim 3, characterized in that: The swing rod seat and the swing rod are correspondingly formed with a stop plate and a stop column, and the driving arm is restricted by the stop plate and the stop column, so that the swing rod can swing 90 degrees relative to the swing rod seat.

5. The anti-tilt device for a ladder vehicle according to claim 3, characterized in that: The cone guide wheel is provided with an inserting column, which is inserted into the inserting column and the inserting hole formed by the end of the rocker rod.

6. The anti-tilt device for a ladder vehicle according to claim 1, characterized in that: The sleeve assembly comprises an outer tube and an inner tube which are movably sleeved together. The inner tube moves up and down in cooperation with an L-shaped groove of the outer tube through a pin arranged at the top, so that the circular guide wheel fixed at the bottom moves away from or close to the rail head.

7. The anti-tilt device for a ladder vehicle according to claim 1, characterized in that: The connecting rod can be firmly hinged on the hinge seat arranged on the top of the sleeve assembly, and a clutch tooth is respectively installed on the connecting rod and the hinge seat; when the connecting rod is tightened, the clutch teeth of the two can be engaged and restricted with each other.

8. The anti-tilt device for a ladder vehicle according to any one of claims 1 to 7, characterized in that: The connecting rod also has an extension assembly, which includes an extension rod sleeved and fastened on the outside of the connecting rod. The ladder car underframe can be connected to the end of the extension rod to combine itself with the clamping platform.

9. The anti-tilt device for a ladder vehicle according to claim 8, characterized in that: The outer side of the extension rod is also sleeved with a supporter, and the supporter is positioned by the support screw and the positioning nut provided on the extension rod; when the ladder truck chassis is connected to the end of the extension rod, the supporter can support the end.

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