Railway wagon replacement brake beam hoisting tool

Abstract

The utility model belongs to railway vehicle special repair tool technical field, concretely is a railway freight car replacement brake beam hoisting tool, including two -way self -locking capstan, hoisting pulley, tow rope, lifting appliance, mounting seat and locking mechanism, the tow rope is wound on two -way self -locking capstan, the hoisting pulley is located the oblique top of two -way self -locking capstan, the tow rope passes the hoisting pulley and vertically downward with lifting appliance is connected, the mounting seat sets up the bottom of two -way self -locking capstan, it is U -shaped structure and can be inverted and is installed at the top of railway freight car bogie, the mounting seat passes through locking mechanism and railway freight car bogie realizes detachable fixed connection, the utility model has realized not to use manual drilling operation in the car bottom, has saved manpower and avoided the difficult problem that the space under the car bottom is insufficient and is not easy to operate, reduced manual hoisting operation difficulty, improved brake beam replacement efficiency and overhauling efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of railway vehicle repair tools; specifically, this utility model relates to a lifting tool for replacing brake beams on railway freight cars. Background Technology

[0002] The brake beam of a freight car is a crucial component connecting the wheels and the braking system. Its primary function is to transmit braking force to the wheels and achieve the braking function. In the freight car braking system, the brake beam acts as a connecting transmission element, while also ensuring the overall stability and safety of the freight car under high loads. The working principle of the freight car brake beam can be simply summarized as follows: different brakes cause the highly worn brake shoes attached to the brake beam to contact the wheels, and the friction force slows down or stops the wheels, achieving the braking effect. In recent years, failures in critical components such as cracks in the train brake beam and loose support clips have occurred frequently, posing serious safety hazards to trains, severely impacting transportation efficiency and train operation safety. Furthermore, replacing brake beams in a train fleet consumes considerable technical inspection time, affecting train turnaround rates.

[0003] The brake beam is assembled between the bolster and the axle. A broken end axle of the brake beam, or deformation or breakage of the beam and the bow rod, will affect the braking effect of the vehicle. Failure to address these issues will increase the operational risk. If the brake beam breaks off during train operation, it will cause serious consequences such as scratching the track and the train derailing or overturning.

[0004] Replacing brake beams in a truck convoy requires manual lifting due to the confined space. Furthermore, it is difficult to align the brake beams with the side frame slides. Prolonged lifting can cause arm muscle soreness, and exhaustion can lead to the brake beams falling off and injuring people, posing a potential safety hazard.

[0005] To ensure rapid on-site replacement of brake beams, save time, and better ensure safety, and to complete vehicle maintenance within the specified time, the use of brake beam replacement hoisting tools instead of manual labor can meet the actual needs, saving time while ensuring personal safety. Utility Model Content

[0006] In view of this, the present invention provides a lifting tool for replacing brake beams of railway freight cars, thereby solving or at least alleviating the above-mentioned problems existing in the prior art.

[0007] To achieve the aforementioned objectives, this utility model provides a lifting tool for replacing brake beams on railway freight cars, comprising a bidirectional self-locking winch, a lifting pulley, a traction rope, a lifting device, a mounting base, and a locking mechanism. The traction rope is wound around the bidirectional self-locking winch. The lifting pulley is positioned diagonally above the bidirectional self-locking winch. One end of the traction rope passes around the lifting pulley and is vertically downward connected to the lifting device. The mounting base is located at the bottom of the bidirectional self-locking winch, has a U-shaped structure, and can be installed upside down on the top of the railway freight car bogie. The mounting base is detachably and fixedly connected to the railway freight car bogie through the locking mechanism.

[0008] Preferably, the locking mechanism includes a fastening screw, the front end of which passes through the side wall of the mounting base and abuts against the railway freight car bogie, and the fastening screw is threadedly connected to the mounting base.

[0009] Preferably, the lifting device includes a fixed structure, a lifting structure, and a balancing structure. The lifting structure and the fixed structure are slidably engaged in the height direction. The rear end of the fixed structure can extend to the center of the bottom of the brake beam to support the brake beam. The balancing structure includes a bottom deflection part and a top sliding part. The sliding part is slidably disposed at the front end of the fixed structure in the left-right direction. The deflection part can be inserted into the through hole of the middle column of the brake beam to deflect and drive the sliding part to slide laterally within the fixed structure. The lifting structure can move upward to contact the sliding part and lock the sliding part in the position after displacement. The top of the lifting structure is provided with a lifting point and connected to the traction rope.

[0010] Preferably, the fixing structure includes a fixing plate and a support plate. The front end of the fixing structure is provided with a downward-opening groove. The sliding part is laterally slidably disposed in the groove. The support plate is fixedly disposed at the bottom of the fixing plate and extends to the bottom of the brake beam to support the brake beam.

[0011] Preferably, the fixing structure includes a fixing plate and a support plate. The front end of the fixing structure is provided with a downward-opening groove. The sliding part is laterally slidably disposed in the groove. The support plate is fixedly disposed at the bottom of the fixing plate and extends to the bottom of the brake beam to support the brake beam.

[0012] Preferably, the lifting structure includes a top plate, connecting columns, a bottom plate, a spring, and an arc-shaped groove. The top plate is located on top of the fixed plate. Four connecting columns are respectively fixedly installed at the four corners of the bottom of the top plate. The bottom ends of the connecting columns pass through the fixed plate and are fixedly connected to the bottom plate. The spring is installed between the fixed plate and the bottom plate. The bottom plate is L-shaped. The arc-shaped groove is opened at the top of the vertical section at the front end of the bottom plate. A rubber pad is provided in the arc-shaped groove to abut against the sliding part.

[0013] Preferably, the balancing structure includes a circular sleeve, a rod, a connecting rope, and a circular slider. The circular sleeve can pass through the through hole of the intermediate column of the brake beam, and the rod can be inserted into the circular sleeve. The circular sleeve and the rod are fixed by bolts. A lifting ring is provided at the top of the circular sleeve and the bottom of the rod. One end of the connecting rope is connected to the lifting ring at the top of the circular sleeve, and the other end is connected to the lifting ring at the bottom of the rod. A circular slider is fixedly provided in the middle part of the connecting rope, and the circular slider is laterally slidably disposed in a groove.

[0014] Preferably, the bottom of the bidirectional self-locking winch is provided with a transverse sliding seat, which can move laterally on the top of the mounting base.

[0015] Preferably, the locking mechanism further includes a clamping plate located at the end of the mounting base away from the fastening screw, and the clamping plate is capable of clamping the side frame cutout of the railway freight car bogie.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects: 1. The replacement of the brake beam hoisting tool eliminates the need for manual labor to crawl under the vehicle, saving manpower and avoiding the problem of insufficient space under the vehicle for operation.

[0017] 2. This method avoids the physical exhaustion and muscle fatigue caused by manually lifting the brake beam, which can lead to cramps, numbness, and other issues. This can prevent the brake beam from falling and injuring people, as well as causing longer processing times, thus effectively improving maintenance efficiency.

[0018] 3. During hoisting, ensure the brake beam is always lifted in a parallel state. This facilitates manual adjustment of the brake beam's position and condition, reduces the difficulty of manual hoisting operations, and improves the efficiency of brake beam replacement. Attached Figure Description

[0019] The disclosure of this utility model will become more apparent with reference to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings: Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present utility model; Figure 2 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model; Figure 3 This is a schematic diagram of the fixing structure, lifting structure, and balancing structure in Embodiment 2 of this utility model; Figure 4 This is a cross-sectional view of the fixing structure in Embodiment 2 of this utility model; Figure 5 This is a schematic diagram of the lifting structure in Embodiment 2 of this utility model.

[0020] Reference numerals in the attached diagram: 1-Bidirectional self-locking winch; 2-Lifting pulley; 3-Traction rope; 4-Mounting base; 5-Fasting screw; 6-Fixing plate; 7-Support plate; 8-Groove; 9-Top plate; 10-Connecting column; 11-Base plate; 12-Spring; 13-Arc groove; 14-Rubber pad; 15-Circular sleeve; 16-Insertion rod; 17-Connecting rope; 18-Circular slider; 19-Horizontal sliding seat; 20-Clamping plate; 21-Hook. Detailed Implementation

[0021] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] Example 1 like Figure 1 As shown, a lifting tool for replacing brake beams in railway freight cars includes a bidirectional self-locking winch 1, a lifting pulley 2, a traction rope 3, a lifting device, a mounting base 4, and a locking mechanism. The traction rope 3 is wound around the bidirectional self-locking winch 1. The lifting pulley 2 is located diagonally above the bidirectional self-locking winch 1. One end of the traction rope 3 passes around the lifting pulley 2 and is vertically downward connected to the lifting device. The mounting base 4 is located at the bottom of the bidirectional self-locking winch 1. It has a U-shaped structure and can be installed upside down on the top of the railway freight car bogie. The mounting base 4 is detachably fixed to the railway freight car bogie through the locking mechanism.

[0023] In this embodiment, the mounting base 4 is fixed to the top of the side frame of the railway freight car bogie by a locking mechanism. A load-bearing plate is provided between the mounting base 4 and the bidirectional self-locking winch 1 to connect the bidirectional self-locking winch 1 and the mounting base 4. A hand crank is installed on the side of the bidirectional self-locking winch 1. The bottom lifting device of the traction rope 3 is connected to the brake beam. The traction rope 3 hangs freely, which facilitates the adjustment of the position and the fixing of the brake beam during operation. The lifting device can be set as a hook 21 to lift the brake beam. The operator turns the hand crank to lower the hook 21 and fix the brake beam on the hook 21. Turning the hand crank in the opposite direction can lift the brake beam and accurately lock it into the groove 8 of the crossbar, which serves as a temporary support point to facilitate manual adjustment of the brake beam position. The head of the crossbar itself has a square end, which fits into the groove 8 on the side frame. This structure naturally forms a "support" or "platform" that can temporarily support the end of the brake beam to prevent the brake beam from falling. The brake beam can be adjusted to a balanced state before being lifted.

[0024] When installing the brake beam, the operator shakes the lifting device to raise one end of the brake beam until it can be placed on the platform formed by the crossbar head and the side frame. At this time, the force of the lifting device is mainly concentrated on this end. Since one end is already secured by the crossbar, the brake beam has achieved initial stability and will no longer swing significantly. The hook 21 of the lifting device can now be released or provide only a slight balancing force. With one end fixed, the brake beam becomes a "lever" with the crossbar as the fulcrum. Workers can lift the other end of the brake beam with relatively little force, easily align it, and place it into the slide groove of the other side frame. After the other end of the brake beam enters the slide groove of the side frame, the operator returns to the first end, uses their hand or a tool to gently lift the end that is temporarily stuck in the groove 8 of the crossbar, and pulls it backward to disengage it from the temporary fulcrum of the crossbar and immediately drop it into the slide groove of the side frame where it should be. At this point, both ends of the brake beam have correctly fallen into the slide groove of the side frame, and the installation is complete. The subsequent steps are to connect the lever, install the brake shoes, etc. This solves the core pain point of "difficulty in alignment" when installing heavy components in a narrow space, and achieves labor-saving, safe, and fast operation.

[0025] The locking mechanism includes a fastening screw 5, the front end of which passes through the side wall of the mounting base 4 and abuts against the railway freight car bogie. The fastening screw 5 is threadedly connected to the mounting base 4.

[0026] In this embodiment, the mounting base 4 can be stably fixed to the side frame of the railway freight car bogie by setting the fastening screw 5, thereby improving the adaptability and stability of the device to different scenarios.

[0027] Example 2 like Figures 2 to 5 As shown, the lifting device includes a fixed structure, a lifting structure, and a balancing structure. The lifting structure and the fixed structure can slide together in the height direction. The rear end of the fixed structure can extend to the center of the bottom of the brake beam to support the brake beam. The balancing structure includes a bottom deflection part and a top sliding part. The sliding part is slidably positioned at the front end of the fixed structure in the left-right direction. The deflection part can be inserted into the through hole of the middle column of the brake beam to deflect it, and drive the sliding part to slide laterally within the fixed structure. The lifting structure can move upward to contact the sliding part and lock the sliding part in the position after displacement. The top of the lifting structure is provided with a lifting point connected to the traction rope 3. In this embodiment, the lifting device is composed of a fixed structure, a lifting structure, and a balancing structure. The balancing structure can pass through the through hole of the middle column at the front end of the brake beam, so that the deflection part deflects and drives the top sliding part to slide laterally within the fixed plate 6. During hoisting, the lifting structure rises and locks the sliding part at the top of the balancing structure in the position after sliding. Together with the fixed structure, it supports the rear end of the brake beam at the rear end, so that the brake beam can always be in a stable parallel state during hoisting. This makes it easier for workers to adjust the position of the brake beam and reduces the swaying of the brake beam from hindering the workers' operation.

[0028] The fixing structure includes a fixing plate 6 and a support plate 7. The front end of the fixing structure is provided with a downward-facing groove 8. The sliding part is laterally slidably disposed in the groove 8. The support plate 7 is fixedly disposed at the bottom of the fixing plate 6 and extends to the bottom of the brake beam to support the brake beam. The sliding part of the balancing structure can slide laterally stably within the groove 8. The top of the lifting structure is located at the top of the fixed plate 6, and the bottom of the lifting structure passes through the fixed plate 6 and is located at the bottom of the fixed plate 6. The lifting structure can slide and cooperate with the fixed plate 6 in the height direction. The support plate 7 extends downward from the rear end of the fixed structure to the bottom center of the brake beam and supports the brake beam from below during hoisting. Together with the balancing structure, the brake beam can be stably hoisted.

[0029] The lifting structure includes a top plate 9, connecting columns 10, a bottom plate 11, a spring 12, and an arc-shaped groove 13. The top plate 9 is located on top of the fixed plate 6. There are four connecting columns 10, which are fixedly installed at the four corners of the bottom of the top plate 9. The bottom end of the connecting column 10 passes through the fixed plate 6 and is fixedly connected to the bottom plate 11. The spring 12 is installed between the fixed plate 6 and the bottom plate 11. The bottom plate 11 is L-shaped. The arc-shaped groove 13 is opened at the top of the vertical section at the front end of the bottom plate 11. A rubber pad 14 is installed in the arc-shaped groove 13 to abut against the sliding part.

[0030] In a relatively specific embodiment, the top of the lifting structure is provided with four lifting points, all of which are connected by steel wire ropes and traction ropes 3. Workers can turn the hand crank to lift the lifting structure in parallel. Since the lifting structure is slidably engaged with the fixed plate 6 in the height direction through four connecting columns, the lifting structure is lifted in a balanced manner, causing the fixed structure to follow the lifting structure in a balanced manner. During hoisting, the lifting structure first moves upward to compress the spring 12. The top of the front end of the bottom plate 11 is located in the groove 8, causing the arc groove 13 to move upward and contact the sliding part. The rubber pad 14 in the arc groove 13 is located between the arc groove 13 and the sliding part and is compressed. Because the brake beam itself has a large weight, the rubber pad ring can press the sliding part tightly to prevent the sliding part from moving laterally. The top of the sliding part contacts the fixed plate 6, and the bottom is pressed by the rubber pad 14, realizing the upward movement of the lifting structure and locking the sliding part in the sliding position.

[0031] The balancing structure includes a circular sleeve 15, an insert rod 16, a connecting rope 17, and a circular slider 18. The circular sleeve 15 can pass through the through hole of the intermediate column of the brake beam, and the insert rod 16 can be inserted into the circular sleeve 15. The circular sleeve 15 and the insert rod 16 are fixed by bolts. Both the top of the circular sleeve 15 and the bottom of the insert rod 16 are provided with lifting rings. One end of the connecting rope 17 is connected to the lifting ring at the top of the circular sleeve 15, and the other end is connected to the lifting ring at the bottom of the insert rod 16. The middle part of the connecting rope 17 is fixedly provided with a circular slider 18, which is laterally slidably disposed in the groove 8.

[0032] The balancing structure uses a circular sleeve 15 that passes through the through hole of the brake beam's central column. The sleeve 15 is then fixed within the through hole by a rod 16 and bolts. Because the through hole of the brake beam's central column is inclined relative to the brake beam as a whole, the circular sleeve 15 and rod 16 deflect with the through hole. The circular slider 18 on the connecting rope 17 undergoes lateral displacement during lifting. After this displacement, the lifting structure continues to move upwards. The rubber pad 14 in the arc-shaped groove 13 abuts against the circular slider 18, locking it in its displaced position, ensuring the connecting rope 17 remains taut. This, combined with the support plate 7, ensures the brake beam remains balanced during hoisting. When the brake beam is hoisted in parallel, the weight at the rear end is relatively large, so the support plate 7 can stably support the brake beam and the brake beam will not tilt forward. Since the inclination angle of the middle column of different models of brake beam is different, the inclination angle of the through hole will also change to a certain extent with the middle column. By inserting the through hole, it can also adapt to the angle change of the through hole of different models of brake beam. The lateral movement distance of the circular slider 18 will also be different. The arc groove 13 can lock the circular slider 18 in the position after displacement when the position of the circular slider 18 changes, so that the lifting device can lift different models of brake beams in a parallel state during hoisting.

[0033] The bottom of the two-way self-locking winch 1 is provided with a transverse sliding seat 19, which can move laterally on the top of the mounting base 4.

[0034] In this embodiment, the mounting base 4 spans the top of the left and right side frames of the railway freight car bogie. The mounting base 4 is stably fixed to the top of the railway freight car bogie by a fastening screw 5 set on one side bottom. The top of the mounting base 4 is rotatably provided with a transverse threaded rod. The bottom of the transverse sliding seat 19 is provided with a traveling wheel. The transverse sliding seat 19 is threadedly connected to the screw. Rotating the screw can drive the transverse sliding seat 19 to move laterally. After hoisting, the brake beam can be moved out of the top range of the railway freight car bogie by the transverse movement of the transverse sliding seat 19, which makes it more convenient to replace the brake beam. The same principle applies when installing the brake beam.

[0035] The locking mechanism also includes a clamping plate 20, which is located at the end of the mounting base 4 away from the fastening screw 5, and the clamping plate 20 can clamp onto the side frame opening of the railway freight car bogie. By setting a threaded rod on the mounting base 4 to drive the clamping plate 20 to move in the height direction of the mounting base 4, the clamping plate 20 can clamp the side frame cutout of the railway freight car bogie. With the fastening screw 5 at the other end, the mounting base 4 can be more stably fixed to the top of the railway freight car bogie.

[0036] The technical scope of this utility model is not limited to the contents of the above description. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the scope of this utility model.

Claims

1. A lifting tool for replacing brake beams on railway freight cars, characterized in that, The system includes a bidirectional self-locking winch (1), a lifting pulley (2), a traction rope (3), a lifting device, a mounting base (4), and a locking mechanism. The traction rope (3) is wound around the bidirectional self-locking winch (1). The lifting pulley (2) is located diagonally above the bidirectional self-locking winch (1). One end of the traction rope (3) passes around the lifting pulley (2) and is vertically downward connected to the lifting device. The mounting base (4) is located at the bottom of the bidirectional self-locking winch (1). It has a U-shaped structure and can be installed upside down on the top of the railway freight car bogie. The mounting base (4) is detachably fixed to the railway freight car bogie through the locking mechanism.

2. The lifting tool for replacing brake beams on railway freight cars as described in claim 1, characterized in that, The locking mechanism includes a fastening screw (5), the front end of which passes through the side wall of the mounting base (4) and abuts against the railway freight car bogie. The fastening screw (5) is threadedly connected to the mounting base (4).

3. The lifting tool for replacing brake beams on railway freight cars as described in claim 2, characterized in that, The lifting device includes a fixed structure, a lifting structure and a balancing structure. The lifting structure and the fixed structure can slide together in the height direction. The rear end of the fixed structure can extend to the center of the bottom of the brake beam to support the brake beam. The balancing structure includes a bottom deflection part and a top sliding part. The sliding part is slidably disposed at the front end of the fixed structure in the left and right direction. The deflection part can be inserted into the through hole of the middle column of the brake beam to deflect and drive the sliding part to slide laterally in the fixed structure. The lifting structure can move upward to contact the sliding part and lock the sliding part in the position after displacement. The top of the lifting structure is provided with a lifting point connected to the traction rope (3).

4. The railway freight car brake beam replacement lifting tool as described in claim 3, characterized in that, The fixing structure includes a fixing plate (6) and a support plate (7). The front end of the fixing structure is provided with a downward-opening groove (8). The sliding part is laterally slidably disposed in the groove (8). The support plate (7) is fixedly disposed at the bottom of the fixing plate (6) and extends to the bottom of the brake beam to support the brake beam.

5. A lifting tool for replacing brake beams on railway freight cars as described in claim 4, characterized in that, The lifting structure includes a top plate (9), connecting columns (10), a bottom plate (11), a spring (12), and an arc groove (13). The top plate (9) is located on top of the fixed plate (6). There are four connecting columns (10) fixedly installed at the four corners of the bottom of the top plate (9). The bottom end of the connecting column (10) passes through the fixed plate (6) and is fixedly connected to the bottom plate (11). The spring (12) is installed between the fixed plate (6) and the bottom plate (11). The bottom plate (11) is L-shaped. The arc groove (13) is opened at the top of the vertical section at the front end of the bottom plate (11). A rubber pad (14) is provided in the arc groove (13) to abut against the sliding part.

6. The railway freight car brake beam replacement lifting tool as described in claim 4, characterized in that, The balancing structure includes a circular sleeve (15), a rod (16), a connecting rope (17), and a circular slider (18). The circular sleeve (15) can pass through the through hole of the intermediate column of the brake beam. The rod (16) can be inserted into the circular sleeve (15). The circular sleeve (15) and the rod (16) are fixed by bolts. The top of the circular sleeve (15) and the bottom of the rod (16) are provided with lifting rings. One end of the connecting rope (17) is connected to the lifting ring at the top of the circular sleeve (15), and the other end is connected to the lifting ring at the bottom of the rod (16). The middle part of the connecting rope (17) is fixedly provided with a circular slider (18). The circular slider (18) is slidably disposed in the groove (8).

7. A lifting tool for replacing brake beams on railway freight cars as described in claim 2, characterized in that, The bottom of the bidirectional self-locking winch (1) is provided with a transverse sliding seat (19), which can move laterally on the top of the mounting base (4).

8. A lifting tool for replacing brake beams on railway freight cars as described in claim 2, characterized in that, The locking mechanism also includes a clamping plate (20), which is located at the end of the mounting base (4) away from the fastening screw (5), and the clamping plate (20) can be clamped at the side frame cutout of the railway freight car bogie.

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