Vehicle-mounted two-way drawing load rail
The bidirectional pull-out load-bearing track structure addresses space and load-bearing limitations by enabling two-way movement and enhanced capacity, simplifying equipment installation and maintenance in special vehicles.
Patent Information
- Application Number
- CN202421092501.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-05-20
AI Technical Summary
Conventional pull-out rails in special vehicles have limited travel and load-bearing capacity, leading to difficulties in installing, maintaining, and disassembling heavy equipment, increased maintenance costs, and reduced equipment reliability due to limited space and interference issues.
A vehicle-mounted bidirectional pull-out load-bearing track structure comprising a bottom bracket assembly, guide rail assembly, locking device, and limit device, with features like heavy-duty bumpers, load pulleys, and spring latches, allowing two-way movement and enhanced load-bearing capacity.
Facilitates easy installation and disassembly of heavy equipment, increases travel and load-bearing capacity, and ensures safety during operation by preventing displacement of guide rails, thus reducing maintenance time and costs.
Smart Images
Figure CN222157311U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a vehicle-mounted bidirectional pull-out load-bearing track structure, in particular to a vehicle-mounted bidirectional pull-out load-bearing track. Background Art
[0002] With the development of society, special vehicles have been widely used due to their good maneuverability, quick response, suitable onboard equipment and suitable working environment. As the functions of special vehicles become more and more, the number of heavy equipment such as generator sets and air compressors that need to be integrated is also increasing. Due to the limited space in the carriage and the relatively narrow installation space, the current conventional pull-out rail has limited travel and poor load-bearing capacity, which is inconvenient for the installation, inspection, maintenance and disassembly of equipment.
[0003] When a special vehicle is to carry a variety of heavy equipment, the heavy equipment is not suitable for hanging on the lower part of the chassis due to its large size, and can only be installed on the upper part of the beam; and the upper space of the special vehicle is limited, and there is no sufficient space for installing maintenance equipment. At present, the conventional installation method of heavy equipment is to install the equipment on the rail, and the rail is fixed on the floor of the cabin with connectors. Therefore, the structural form and performance of the rail have an important impact on the loading and unloading and maintenance of the equipment.
[0004] If conventional rails are used to load equipment, in order to ensure the safety of the equipment when it is pulled out, one-third to one-half (depending on the weight of the equipment) of the rails must be reserved in the rails to provide support and stability. The size of the equipment pull-out cabin is limited by the rail structure and force factors to only half the length of the equipment. The oil circuit, circuit, gas circuit or installation fasteners of the equipment cannot be fully exposed, and it is not accessible for maintenance. In daily maintenance and repair, potential faults cannot be discovered and resolved in a timely manner, and hidden dangers cannot be eliminated in a timely manner, which increases the probability of failure and reduces the reliability of the equipment.
[0005] Since the equipment cannot be completely removed from the cabin during installation or disassembly, it is impossible to use a crane to load and unload the equipment throughout the process, and operators have to manually load and unload the equipment. This brings great trouble to the installation and maintenance of the equipment, increases the equipment repair time and maintenance costs, and also affects the equipment's operating efficiency, reduces user satisfaction, and reduces the sustainability and competitiveness of the product.
[0006] In the above situation, if all the equipment is pulled out of the shelter, the rail travel needs to be increased, which doubles the length of the rail and greatly increases the space occupied, which is not suitable for the narrow space in the shelter. And when two devices need to be installed on the left and right sides of the shelter, the rails of each device interfere with each other and cannot be installed, which increases the design difficulty and the production workload. From design and production to after-sales maintenance, the cost of the product is increased.
[0007] Therefore, how to increase the travel and load-bearing capacity of the drawer rail to facilitate the installation and disassembly of the equipment has become a technical problem that needs to be solved urgently. Utility Model Content
[0008] Purpose of the utility model: In view of the shortcomings in the prior art, the purpose of the utility model is to provide a vehicle-mounted two-way pull-out load-bearing rail, which can install two or more heavy equipment in the narrow space inside the car, and increase the stroke and load-bearing capacity of the pull-out guide rail, so as to facilitate the installation and disassembly of the equipment, and has the advantages of large stroke, large load-bearing capacity and easy operation.
[0009] Technical solution: The utility model vehicle-mounted bidirectional pull-out load-bearing track includes a bottom bracket assembly, a guide rail assembly, a locking device and a limit device;
[0010] The limit device includes heavy-duty bumper and card holder;
[0011] The bottom bracket assembly includes an L-shaped bracket and a connecting support; the L-shaped brackets are fixed by the connecting support, and the clamping seat is fixed on the connecting support; a load pulley is installed on the L-shaped bracket;
[0012] The guide rail assembly includes a fixed base plate, a cross brace, a guide rail and a stop bar; the cross brace and the stop bar are fixed between the guide rails; the heavy-duty bumper is fixed on the stop bar; the load pulley is located in the guide rail; the bottom bracket assembly supports the guide rail assembly to slide through the load pulley;
[0013] The heavy-duty bumper restricts the movement of the guide rail assembly by snapping into the holder;
[0014] The locking device comprises a spring latch fixed on the cross brace, and a latch hole for inserting the spring latch is arranged on the L-shaped bracket.
[0015] The locking device also includes locking fasteners for fixing the bottom bracket assembly and the guide rail assembly.
[0016] A clamp and a spring are arranged on the card seat, and the clamp fixes the heavy-duty bumper through the spring.
[0017] The load pulley comprises a pulley, one side of the pulley is provided with an external thread, and a locking nut is installed on the external thread.
[0018] A retaining ring is provided on the pulley, and the retaining ring is used to increase the force bearing area and torque.
[0019] The pulley is a tapered pulley that matches the guide rail.
[0020] The bottom bracket assembly also includes a first reinforcement plate, which is fixed on the L-shaped bracket.
[0021] The guide rail assembly also includes a second reinforcement plate, which is fixed between the fixed base plate and the cross brace.
[0022] The cross brace and guide rails of the guide rail assembly constitute a frame body.
[0023] The spring latch is fixed to the cross brace at the end of the guide rail assembly.
[0024] Working principle: The bottom bracket assembly of the utility model is fixed on the bottom plate of the carriage, and supports the upper guide rail assembly to slide left and right through the load-bearing pulleys on both sides. The frame of the guide rail assembly is made of channel steel, and the notches of the channel steels on both sides face the sides. The load-bearing pulleys on the bottom bracket are conical pulleys that match the channel steels on both sides. The conical pulleys are equipped with load-bearing bearings inside and lubricating oil is applied on the outside to reduce the friction resistance with the channel steel when rolling inside the channel steel.
[0025] Limit devices are installed on the left and right sides of the bottom bracket assembly to limit the left and right travel of the upper guide rail assembly. When the guide rail assembly is pulled outward, the bumper installed on the guide rail assembly and the bumper seat installed on the bottom bracket assembly are engaged, and the guide rail assembly cannot be pulled outward. When the equipment shakes during maintenance, the guide rail is prevented from displacement to protect the safety of equipment and personnel.
[0026] A fixed base plate is provided on the upper part of the guide rail assembly, and the upper part is connected and fixed to the vehicle-mounted equipment. One device is installed on each of the left and right sides, and a large device is also installed as needed.
[0027] A locking device is installed at the lower part of one end of the guide rail assembly to lock the bottom bracket assembly and the guide rail assembly during driving or operation. During inspection and maintenance, the locking device is opened to pull the upper guide rail out to the left and right. The heavy spring latch of the locking device plays a guiding and fastening role, and the locking fastener plays a locking role.
[0028] The utility model simplifies the overall structure and reduces the probability of problems with the connection parts by connecting the bottom bracket assembly, the guide rail assembly, the locking device, and the limit device; the guide rail assembly of the upper loading equipment is pulled in the left and right directions, the travel is adjusted by the limit device, and the locking device is provided to ensure the safety during driving. In a compartment with narrow space limits and an environment with many installed equipment, it can withstand a greater load through two-way pulling and has a larger movement travel, solving the problem of inconvenience in the installation or maintenance of vehicle-mounted equipment.
[0029] Beneficial effects: Compared with the existing rigid suspension system, the utility model has the following advantages:
[0030] (1) In the practical vehicle-mounted bidirectional pull-out load-bearing track structure, the guide rail assembly on the upper part of the bracket assembly can be pulled out in both directions. When the guide rail assembly is pulled out to the left, the right track stays in the bracket, so that the left equipment can be fully pulled out, increasing the track travel. Similarly, the right equipment can also be fully pulled out, which is convenient for the installation and removal of the equipment.
[0031] (2) In the present invention, half (adjusted according to travel requirements) of the guide rail assembly remains in the bracket when the guide rail assembly is pulled out to the left or right. The number of load-bearing pulleys on the left and right sides of the bracket assembly that support the rail assembly and exert more force and torque than traditional structures. Therefore, the track has a greater load-bearing capacity.
[0032] (3) The guide rail assembly of the utility model can be pulled out in both directions, and when the space on one side of the vehicle is limited and cannot be unfolded, the equipment can be pulled out from the other side, which is convenient and flexible. BRIEF DESCRIPTION OF THE DRAWINGS
[0033] Figure 1 This is a front view of the vehicle-mounted bidirectional pull-out load-bearing track of the utility model;
[0034] Figure 2 It is a top view of the vehicle-mounted bidirectional pull-out load-bearing track of the utility model;
[0035] Figure 3 This is a right side view of the vehicle-mounted bidirectional pull-out load-bearing track of the utility model;
[0036] Figure 4 It is a structural schematic diagram of the bottom track assembly of the vehicle-mounted bidirectional pull-out load-bearing track of the utility model;
[0037] Figure 5 It is a structural schematic diagram of the guide rail assembly of the vehicle-mounted bidirectional pull-out load-bearing track of the utility model;
[0038] Figure 6 This is a schematic diagram of the structure of the locking device in the vehicle-mounted bidirectional pull-out load-bearing track of the utility model;
[0039] Figure 7 This is a schematic diagram of the structure of the load-bearing pulley in the vehicle-mounted bidirectional pull-out load-bearing track of the utility model;
[0040] Figure 8 It is a schematic diagram of the structure of the cooperation between the load pulley and the guide rail assembly in the vehicle-mounted bidirectional pull-out load track of the utility model;
[0041] Fig. 9 This is a schematic diagram of the structure of the limit device in the vehicle-mounted bidirectional pull-out load-carrying track of the utility model;
[0042] Fig.10 It is a schematic diagram of the left side of the vehicle-mounted bidirectional pull-out load-bearing track of the utility model;
[0043] Fig.11 It is a schematic diagram of the right side pulling of the vehicle-mounted bidirectional pull-out load-bearing track of the utility model. DETAILED DESCRIPTION
[0044] Example:
[0045] like Figures 1 to 3As shown, the vehicle-mounted bidirectional pull-out load-bearing rail of the utility model includes a bottom bracket assembly 1, a guide rail assembly 2, a locking device 3, a load-bearing pulley 4 and a limiting device 5. The bottom bracket assembly 1 is fixed to the car floor with high-strength screws, and the upper guide rail assembly 2 is supported to slide left and right by the load-bearing pulley 4 installed on the L-shaped brackets 101 on both sides. The locking device 3 is installed at the lower part of the cross brace 202 at one end of the guide rail assembly 2. The bottom bracket assembly 1 and the guide rail assembly 2 are locked during driving or operation. The locking device 3 is opened during inspection and maintenance to pull the upper guide rail 2 out to the left and right. The limiting device 5 includes a heavy-duty bumper 501 and a holder 502. The limiting devices 5 at both ends limit the pulling and drawing stroke of the upper guide rail assembly 2.
[0046] like Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, the bottom bracket assembly 1 includes L-shaped brackets 101 on both sides, connecting fasteners 102, a first reinforcing plate 103 and a connecting support 104. The connecting support 104 is fixed between the L-shaped brackets 101 on both sides, and a holder 502 of a limiting device 5 is installed above the connecting support 104. The limiting device 5 is installed on the connecting support 104 on both sides of the bottom bracket assembly 1, and the limiting device 5 limits the travel of the upper guide rail assembly 2 in the left and right directions.
[0047] The guide rail assembly 2 includes a fixed base plate 201, a cross brace 202, a guide rail 203, a stopper 204 and a second reinforcement plate 205. The cross brace 202 is fixed between the guide rails 203, and the second reinforcement plate 205 is fixed between the cross brace 202 and the fixed base plate 201. The stopper 204 is welded to the middle position of the guide rail 203, and a heavy-duty bumper 501 of the limit device 5 is installed above the stopper 204. The fixed base plate 201 is arranged on the upper part of the guide rail assembly 2, and the equipment on the left and right sides of the upper part of the guide rail assembly 2 is fixed on the fixed base plate 201. When one side of the equipment is maintained and repaired, the locking device 3 is opened and all are pulled out to facilitate the disassembly of the equipment.
[0048] The locking device 3 includes a spring latch 301 and a locking fastener 302. The spring latch 301 is fixed on the end cross brace 202 of the guide rail assembly 2, and a latch hole is opened on the L-shaped bracket 101 of the bottom bracket assembly 1. When the upper guide rail assembly 2 is in place, the spring latch 301 is inserted into the latch hole of the L-shaped bracket 101. Since the spring latch 301 is often inserted into the latch hole of the L-shaped bracket 101, there is a certain gap between the latch and the latch hole. During the driving process, the equipment is in full vibration and there is a long impact force of braking or acceleration. The fixing method of the latch and the latch hole is unreliable and causes the latch to deform and fail. Therefore, when carrying heavy equipment, a locking fastener 302 is installed on the guide rail assembly 2 and the bottom bracket assembly 1, that is, high-strength screws are used for fixing.
[0049] The load pulley 4 comprises a pulley 401, a retaining ring 402 is arranged on the pulley 401, a thread is arranged on one side of the pulley 401, and a locking nut 403 is installed on the thread. The retaining ring 402 increases the force bearing area and the moment, and the locking nut 403 plays a tightening role.
[0050] When the upper guide rail is pulled out, the heavy-duty bump bead 501 moves with the guide rail assembly 2 and approaches the holder 502. When the upper equipment is pulled into place, the heavy-duty bump bead 501 collides with the holder 502, and the guide rail assembly 2 stops moving. At the same time, the left and right clamps on the holder 502 hold the heavy-duty bump bead 501 under the elastic force of the springs on both sides, so that the upper guide rail does not move during equipment loading and unloading and maintenance, thereby avoiding safety accidents.
[0051] A fixed base plate 201 is provided on the upper part of the guide rail assembly 2, and the upper part of the fixed base plate 201 is connected and fixed to the vehicle-mounted equipment. A device is installed on each of the left and right sides of the guide rail assembly 2, and a large device is also installed as needed. The cross brace 202 and the guide rail 203 of the guide rail assembly 2 form a frame body, and the frame body is made of channel steel welding, and the notches of the channel steel on both sides face the sides.
[0052] The load-bearing pulley 401 installed on the bottom bracket 1 is a special tapered pulley that matches the channel steels on both sides of the guide rail assembly 2. During installation, align the channel steels on both sides of the guide rail assembly 2 with the load-bearing pulley 401 installed on the bottom bracket 1 and push it in. Lift the heavy equipment on the guide rail assembly 2 and secure it firmly with fasteners. Pull out the guide rail assembly 2 to move the upper equipment to a position that is convenient for loading, unloading and maintenance. According to the position of the holder 502 installed on the connecting support 104 on the bottom bracket assembly 1, a mounting hole for installing the baffle rod 204 is provided at a corresponding position on the guide rail assembly 2. The heavy-duty bumper 501 on the baffle rod 204 corresponds to the holder 502. Install in the same way in the opposite direction.
[0053] The limit device 5 is installed on the left and right sides of the bottom bracket assembly 1, and the limit device 5 limits the left and right travel of the upper guide rail assembly 2. When the guide rail assembly 2 is pulled outward, the bumper 501 installed on the stop rod 204 of the guide rail assembly 2 and the clamping seat 502 installed on the bottom bracket assembly 1 are clamped together, and the guide rail assembly 2 cannot be pulled outward.
[0054] like Fig.10 , Fig.11 As shown, when the guide rail assembly 2 is pulled out to the left or right, half (adjustable according to the travel requirements) of the guide rail assembly 2 stays in the bracket assembly 1, and the number and force moment of the load-bearing pulleys 4 on the bracket assembly 1 are greater than those of the traditional structure. Therefore, the track has a greater load-bearing capacity.
Claims
1. A vehicle-mounted bidirectional pull-out load-bearing track, characterized in that: It comprises a bottom bracket assembly (1), a guide rail assembly (2), a locking device (3) and a limiting device (5); The limiting device (5) comprises a heavy-duty bumper (501) and a holder (502); The bottom bracket assembly (1) comprises an L-shaped bracket (101) and a connecting support (104); the L-shaped brackets (101) are fixed by the connecting support (104), and the clamping seat (502) is fixed on the connecting support (104); and a load pulley (4) is installed on the L-shaped bracket (101); The guide rail assembly (2) comprises a fixed base plate (201), a cross brace (202), a guide rail (203) and a stop rod (204); the cross brace (202) and the stop rod (204) are fixed between the guide rail (203); the heavy-duty bumper (501) is fixed on the stop rod (204); the load-bearing pulley (4) is located in the guide rail (203); the bottom bracket assembly (1) supports the guide rail assembly (2) to slide via the load-bearing pulley (4); The heavy-duty bumper (501) limits the movement of the guide rail assembly (2) by being inserted into the clamping seat (502); The locking device (3) comprises a spring latch (301) fixed on the cross brace (202), and a latch hole for inserting the spring latch (301) is provided on the L-shaped bracket (101).
2. The vehicle-mounted bidirectional pull-out load-carrying track according to claim 1, characterized in that: The locking device (3) also includes a locking fastener (302) for fixing the bottom bracket assembly (1) and the guide rail assembly (2).
3. The vehicle-mounted bidirectional pull-out load-bearing track according to claim 1, characterized in that: The holder (502) is provided with a clamp and a spring, and the clamp fixes the heavy-duty bumper (501) via the spring.
4. The vehicle-mounted bidirectional pull-out load-bearing track according to claim 1, characterized in that: The load pulley (4) comprises a pulley (401), one side of the pulley (401) is provided with an external thread, and a locking nut (403) is mounted on the external thread.
5. The vehicle-mounted bidirectional pull-out load-bearing track according to claim 4, characterized in that: The pulley (401) is provided with a retaining ring (402).
6. The vehicle-mounted bidirectional pull-out load-carrying track according to claim 4, characterized in that: The pulley (401) is a tapered pulley.
7. The vehicle-mounted bidirectional retractable load-bearing track according to claim 1, characterized in that: The bottom bracket assembly (1) further comprises a first reinforcement plate (103), wherein the first reinforcement plate (103) is fixed on the L-shaped bracket (101).
8. The vehicle-mounted bidirectional pull-out load-bearing track according to claim 1, characterized in that: The guide rail assembly (2) further comprises a second reinforcement plate (205), wherein the second reinforcement plate (205) is fixed between the fixed base plate (201) and the cross brace (202).
9. The vehicle-mounted bidirectional pull-out load-bearing track according to claim 1, characterized in that: The cross brace (202) and the guide rail (203) of the guide rail assembly (2) form a frame body.
10. The vehicle-mounted bidirectional retractable load-bearing track according to claim 1, characterized in that: The spring latch (301) is fixed on the cross brace (202) at the end of the guide rail assembly (2).