Traction mechanism capable of pulling manual carrying vehicle
By designing a traction mechanism with hollow connecting blocks and a buffer structure, the problems of cumbersome connection and safety hazards of manual pallet trucks when handling heavy goods are solved, achieving the effects of rapid connection and safe buffering.
Patent Information
- Application Number
- CN202520497463.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-03-20
AI Technical Summary
Existing manual pallet trucks are difficult to pull manually when encountering heavy loads, have cumbersome connection methods, and pose safety hazards when they stop suddenly due to inertia.
A traction mechanism was designed, comprising components such as a hollow connecting block, a mounting plate, a U-shaped connecting ring, a fixing plate, and a buffer plate. The fixing plate and the U-shaped connecting ring work together to achieve quick connection, and the buffer structure of the buffer rubber airbag and the buffer plate enhances safety.
It enables quick connection and safe buffering between manual pallet trucks and towing equipment, improving ease of operation and safety of use.
Smart Images
Figure CN223764141U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of manual pallet trolley towing technology, specifically a towing mechanism that can tow a manual pallet trolley. Background Technology
[0002] A manual pallet truck is a type of material handling equipment that typically consists of forks, a frame, wheels, and handles. It is mainly used for short-distance transport of goods in warehouses, factories, supermarkets, and other similar locations. It can carry items of a certain weight, allowing goods to be moved between different positions. It is simple, flexible, convenient, and relatively inexpensive to operate, making it suitable for situations where the goods are relatively light, the transport distance is short, and high-speed transport is not required.
[0003] When using existing manual pallet trucks, if they encounter heavy goods that cannot be moved manually, they need to be pulled by external towing equipment. However, the connection between the existing towing equipment and the manual pallet truck is cumbersome and inconvenient for quick operation. Furthermore, during the pulling process, the manual pallet truck, being fully loaded with goods, has a large inertia. If an emergency stop is required during towing, the manual pallet truck will lurch forward due to inertia, posing a certain safety hazard. Therefore, we propose a towing mechanism that can tow manual pallet trucks. Utility Model Content
[0004] The purpose of this utility model is to provide a towing mechanism for pulling manual pallet trucks, in order to solve the problem mentioned in the background art that when existing manual pallet trucks encounter heavy goods that cannot be pulled by manpower, they need to be pulled by external towing equipment. However, the connection method between the existing towing equipment and the manual pallet truck is cumbersome and inconvenient for quick operation. Moreover, during the pulling process, the manual pallet truck is heavy due to its own inertia. If an emergency stop is required during towing, the manual pallet truck will lurch forward under the action of inertia, which poses a certain safety hazard.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a traction mechanism for pulling a manual pallet trolley, comprising a hollow connecting block and a mounting plate. The mounting plate is located on the right side of the hollow connecting block. A U-shaped connecting ring is fixedly connected to the left side wall of the mounting plate. A through groove is opened in the middle of the top and bottom right sides of the hollow connecting block, and the upper and lower through grooves are connected. Mounting columns are fixedly connected to the top of the hollow connecting block and to the front and rear sides of the upper through groove. A top plate is fixedly connected to the top of the two mounting columns. A fixing plate is slidably connected to the outer side walls of the two mounting columns. A traction block is fixedly connected to the middle of the bottom of the fixing plate. A fixing spring is sleeved between the outer side wall of the mounting column and the bottom of the top plate and the top of the fixing plate. A slot is opened in the middle of the top of the top plate. A damping shaft is fixedly connected to the middle of the top of the fixing plate. A lifting rod is fixedly connected to the top of the damping shaft.
[0006] As a further description of the above technical solution:
[0007] The left side wall of the U-shaped connecting ring extends into the inner cavity of the hollow connecting block, and the outer side wall of the U-shaped connecting ring is slidably connected to the inner cavity wall of the hollow connecting block. The bottom of the traction block extends through the upper through groove and the U-shaped connecting ring to the inner cavity of the lower through groove. The inner side wall of the U-shaped connecting ring is slidably connected to the outer side wall of the traction block. The top end of the lifting rod extends through the slot to the outside of the slot.
[0008] As a further description of the above technical solution:
[0009] Limiting blocks are fixedly connected to the upper and lower sides of the left and right sidewalls of the lifting rod. The tops of the two upper limiting blocks are in contact with the bottom of the top plate. Reinforcing elastic protrusions are fixedly connected to the tops of the two upper limiting blocks. The reinforcing elastic protrusions on the left and right sides are respectively engaged with the left and right sidewalls of the top plate. A handle is fixedly connected to the top of the lifting rod.
[0010] As a further description of the above technical solution:
[0011] The hollow connecting block has air cavities on both the front and rear sides of its right side wall, and the air cavities on both sides are connected. A circular slider is slidably connected to the inner wall of the air cavity. A buffer spring is fixedly connected to the left side wall of the circular slider. The end of the buffer spring is fixedly connected to the left side of the inner wall of the air cavity. A buffer rod is fixedly connected to the right side wall of the circular slider. The ends of the buffer rods on both the front and rear sides extend to the outside of the air cavity and are fixedly connected to a buffer plate. The right side wall of the buffer plate contacts the left side wall of the mounting plate.
[0012] As a further description of the above technical solution:
[0013] A buffer rubber airbag is fixedly connected to the left side of the inner wall of the hollow connecting block. The buffer rubber airbag is connected to the two air chambers. A rubber plate is fixedly connected to the right side wall of the buffer rubber airbag.
[0014] As a further description of the above technical solution:
[0015] A gasket is provided between the right side wall of the buffer plate and the left side wall of the mounting plate, and a sealing ring is provided between the outer side wall of the buffer rod, located on the right side of the circular slider, and the inner wall of the air chamber.
[0016] Compared with the prior art, the beneficial effects of this utility model are:
[0017] 1. This traction mechanism for towing manual pallet trucks involves inserting a U-shaped connecting ring into a hollow connecting block, and then inserting the traction block into the U-shaped connecting ring through a through slot via a fixing plate. The fixing plate, in conjunction with the mounting column, top plate, and fixing spring, secures the position of the traction block. The lifting rod, in conjunction with the damping shaft, facilitates the operation of the fixing plate. Simultaneously, the lifting rod, in conjunction with the upper limiting block and reinforcing elastic protrusion, reinforces and enhances the stability of the fixation. The lower limiting block, in conjunction with the top plate and slot, limits the lifting rod, thus facilitating operation during disassembly and installation. It allows for easy connection of the manual pallet truck to the traction equipment, enabling quick and convenient operation.
[0018] 2. This towing mechanism for pulling manual pallet trucks uses a buffer plate, buffer rod, circular slider, buffer spring, and air chamber to cushion the manual pallet truck. During cushioning, the circular slider, in conjunction with the sealing ring, pushes the gas in the air chamber into the buffer rubber airbag, inflating the buffer rubber airbag and lifting it up to further cushion the manual pallet truck in conjunction with the rubber plate. This cushioning mechanism improves the safety of manual pallet trucks during use. Attached Figure Description
[0019] Figure 1 This is a three-dimensional structural diagram of a traction mechanism for pulling a manual pallet truck, as proposed in this utility model.
[0020] Figure 2 This is a schematic front sectional view of the structure of a traction mechanism for pulling a manual pallet truck proposed in this utility model.
[0021] Figure 3 A top sectional view of the hollow connecting block of the traction mechanism for pulling a manual pallet truck proposed in this utility model;
[0022] Figure 4 This is a top view schematic diagram of the reinforcing elastic protrusion of the traction mechanism for pulling a manual pallet truck proposed in this utility model;
[0023] Figure 5 This is a schematic diagram of the bottom of the traction groove of a traction mechanism that can pull a manual transport vehicle, as proposed in this utility model.
[0024] In the diagram: 100, hollow connecting block; 110, through groove; 111, mounting column; 112, top plate; 113, fixing plate; 114, traction block; 115, fixing spring; 116, slot; 117, damping shaft; 118, lifting rod; 120, limiting block; 121, reinforcing elastic protrusion; 130, air chamber; 131, circular slider; 132, buffer spring; 133, buffer rod; 134, buffer plate; 140, buffer rubber airbag; 200, mounting plate; 210, U-shaped connecting ring. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0028] This utility model provides a towing mechanism for pulling a manual pallet trolley, which facilitates the connection between the manual pallet trolley and the towing device, enabling quick operation. It also provides cushioning for the manual pallet trolley, thereby improving safety during use. Please refer to [link to relevant documentation]. Figure 1-5 It includes a hollow connecting block 100 and a mounting plate 200;
[0029] Please refer to it again. Figure 1-5A U-shaped connecting ring 210 is fixedly connected to the left side wall of the mounting plate 200. The U-shaped connecting ring 210 is used to connect the hollow connecting block 100. A through groove 110 is opened at the middle of the top and bottom right sides of the hollow connecting block 100. The through groove 110 is used to cooperate with the traction block 114 to fix the U-shaped connecting ring 210. The upper and lower through grooves 110 are connected. Mounting posts 111 are fixedly connected to the top of the hollow connecting block 100 and to the front and rear sides of the upper through groove 110. The mounting posts 111 are used to limit the position of the fixing plate 113. A top plate 112 is fixedly connected to the top of the two mounting posts 111. The top plate 112 is used to cooperate with the fixing spring 115 to fix the fixing plate 113. A fixing spring 115 is slidably connected to the outer side wall of the two mounting posts 111. Plate 113, fixing plate 113 is used to install traction block 114. The traction block 114 is fixedly connected to the bottom middle of the fixing plate 113. The traction block 114 is used to fix the U-shaped connecting ring 210. A fixing spring 115 is sleeved between the outer wall of the mounting column 111 and the bottom of the top plate 112 and the top of the fixing plate 113. The fixing spring 115 is used to fix the fixing plate 113. A slot 116 is opened in the middle of the top of the top plate 112. The slot 116 is used to allow the limiting block 120 to pass through the top plate 112. A damping shaft 117 is fixedly connected to the top middle of the fixing plate 113. The damping shaft 117 is used to prevent the lifting rod 118 from rotating without external force. The top end of the damping shaft 117 is fixedly connected to A lifting rod 118 is provided for easy operation of the fixing plate 113. The mounting plate 200 is located on the right side of the hollow connecting block 100. The left side wall of the U-shaped connecting ring 210 extends into the inner cavity of the hollow connecting block 100, and the outer side wall of the U-shaped connecting ring 210 is slidably connected to the inner cavity wall of the hollow connecting block 100. The bottom of the traction block 114 extends through the upper through groove 110 and the U-shaped connecting ring 210 into the inner cavity of the lower through groove 110. The inner side wall of the U-shaped connecting ring 210 is slidably connected to the outer side wall of the traction block 114. The top end of the lifting rod 118 extends through the slot 116 to the outside of the slot 116. Limiting blocks 120 are fixedly connected to the upper and lower sides of the left and right side walls of the lifting rod 118. The limiting blocks 120 are used to limit the lifting rod 118. The tops of the two upper limiting blocks 120 contact the bottom of the top plate 112. Reinforcing elastic protrusions 121 are fixedly connected to the tops of the two upper limiting blocks 120, further enhancing the fixing effect. The left and right reinforcing elastic protrusions 121 respectively engage with the left and right side walls of the top plate 112. A handle is fixedly connected to the top of the lifting rod 118. During use, the mounting plate 200 is fixedly mounted on a manual transport vehicle. The hollow connecting block 100 is installed on the existing traction equipment via the connecting column on the left side. By using the handle on the lifting rod 118 in conjunction with the damping shaft 117, the lifting rod 118 is rotated, causing the limiting blocks 120 to rotate to an angle that allows them to pass through the slot 116. Then, the lifting rod 118 is pulled upwards.The lifting rod 118 pulls the fixing plate 113 and mounting column 111 upwards via the damping shaft 117, thereby causing the traction block 114 to disengage from the hollow connecting block 100. Simultaneously, the fixing spring 115 retracts, and the two lower limiting blocks 120 move to the top of the top plate 112 through the slot 116. Rotating the lifting rod 118 causes the two lower limiting blocks 120 to lock onto the top plate 112, fixing the position of the lifting rod 118. The U-shaped connecting ring 210 is then inserted into the hollow connecting block 100. Rotating the lifting rod 118 releases the limiting, and the fixing spring 115 rebounds, causing the traction block 114 to be inserted into the U-shaped connecting ring 210 via the fixing plate 113. Then, rotating the lifting rod 118 again causes the two upper limiting blocks 120, in conjunction with the reinforcing elastic protrusion 121, to limit the lifting rod 118, thereby improving the fixing effect and completing the connection.
[0030] In summary, it allows for easy connection between manual pallet trucks and towing equipment, facilitating rapid operation.
[0031] Please refer to it again. Figure 1 , Figure 2 , Figure 3 and Figure 5The hollow connecting block 100 has air chambers 130 on both the front and rear sides of its right side wall. These air chambers 130 limit the movement of the circular slider 131 and simultaneously provide gas to the buffer rubber airbag 140. The front and rear air chambers 130 are connected. A circular slider 131 is slidably connected to the inner wall of each air chamber 130. The circular slider 131 is used to mount a buffer spring 132 and a buffer rod 133. A buffer spring 132 is fixedly connected to the left side wall of the circular slider 131. The buffer spring 132 buffers the movement while simultaneously resetting the circular slider 131. The end of the buffer spring 132 is attached to the left side of the inner wall of the air chamber 130. A buffer rod 133 is fixedly connected to the right side wall of the circular slider 131. The buffer rod 133 is used to install the buffer plate 134. The ends of the buffer rods 133 on both the front and rear sides extend to the outside of the air chamber 130 and are fixedly connected to the buffer plate 134. The buffer plate 134 is used to increase the contact area with the mounting plate 200. The right side wall of the buffer plate 134 contacts the left side wall of the mounting plate 200. A buffer rubber airbag 140 is fixedly connected to the left side of the inner wall of the hollow connecting block 100. The buffer rubber airbag 140 is used to further buffer the airbag in conjunction with the rubber plate. The buffer rubber airbag 140 and the two air chambers are connected. Connected to 130, a rubber plate is fixedly connected to the right side wall of the buffer rubber airbag 140. A gasket is provided between the right side wall of the buffer plate 134 and the left side wall of the mounting plate 200. The gasket is used for auxiliary buffering to reduce the generated vibration. A sealing ring is provided between the outer wall of the buffer rod 133, located on the right side of the circular slider 131, and the inner wall of the air chamber 130. The sealing ring is used to improve airtightness. When the manual pallet truck moves forward under the action of inertia, the mounting plate 200 pushes the buffer plate 134 to move to the left. At the same time, the U-shaped connecting ring 210 slides on the traction block 114. The buffer plate 134 passes through... The buffer rod 133 pushes the circular slider 131 to move, and the circular slider 131 then squeezes the buffer spring 132, causing the buffer spring 132 to contract and buffer. At the same time, the circular slider 131 pushes the gas in the two air chambers 130 into the buffer rubber airbag 140 to inflate the buffer rubber airbag 140. This allows the buffer rubber airbag 140, together with the rubber plate, to buffer the U-shaped connecting ring 210 and further buffer the manual pallet trolley. After completion, the buffer spring 132 rebounds and, together with the circular slider 131, extracts the gas from the buffer rubber airbag 140 to prepare for the next buffering.
[0032] In summary, this technology can cushion the impact of manual pallet trucks, thereby improving safety during use.
[0033] In practical use, those skilled in the art use the handle on the lifting rod 118 in conjunction with the damping shaft 117 to rotate the lifting rod 118, causing the limiting block 120 to rotate to an angle that allows it to pass through the slot 116. Then, the lifting rod 118 is pulled upwards, causing the lifting rod 118 to pull the fixing plate 113 and mounting column 111 upwards via the damping shaft 117. This causes the traction block 114 to disengage from the hollow connecting block 100, while the fixing spring 115 retracts. The two lower limiting blocks 120 move through the slot 116 to the top of the top plate 112. Rotating the lifting rod 118 causes the two lower limiting blocks 120 to lock onto the top plate 112, fixing the position of the lifting rod 118. The U-shaped connecting ring 210 is then inserted into the hollow connecting block 100. Rotating the lifting rod 118 releases the limiting position, causing the fixing spring 115 to rebound, thereby driving the traction block 114 to insert into the U-shaped connecting ring 210 via the fixing plate 113. Then, the lifting rod 118 is rotated again... The two upper limiting blocks 120, together with the reinforcing elastic protrusions 121, limit the lifting rod 118 to complete the connection. When the manual pallet truck moves forward under the action of inertia, the mounting plate 200 pushes the buffer plate 134 to move to the left. At the same time, the U-shaped connecting ring 210 slides on the traction block 114. The buffer plate 134 pushes the circular slider 131 to move through the buffer rod 133. The circular slider 131 then squeezes the buffer spring 132, causing the buffer spring 132 to contract for buffering. At the same time, the circular slider 131 pushes the gas in the two air chambers 130 into the buffer rubber airbag 140 to inflate the buffer rubber airbag 140. Thus, the buffer rubber airbag 140, together with the rubber plate, buffers the U-shaped connecting ring 210 and further buffers the manual pallet truck. After completion, the buffer spring 132 rebounds and, together with the circular slider 131, extracts the gas from the buffer rubber airbag 140 to prepare for the next buffering.
[0034] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0035] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. A towing mechanism for a hand trolley, characterised in that: The utility model provides a hollow connecting block (100) and mounting plate (200) are included, the mounting plate (200) is located the right side of hollow connecting block (100), the left side wall of mounting plate (200) is fixedly connected with U type connecting ring (210), the top and bottom right side middle part of hollow connecting block (100) is opened through the groove (110), and the through groove (110) of upper and lower sides is connected, and the top of hollow connecting block (100) and be located the front and back sides of upper through groove (110) fixedly connected with mounting column (111), the top of two mounting column (111) is fixedly connected with top plate (112), and the outer side wall of two mounting column (111) is slidably connected with fixed plate (113), and the bottom middle part of fixed plate (113) is fixedly connected with traction block (114), and the outer side wall of mounting column (111) and be located the bottom of top plate (112) and the top of fixed plate (113) between the sleeve of fixed spring (115) is connected, the top middle part of top plate (112) is opened with the slot (116), and the top middle part of fixed plate (113) is fixedly connected with damping rotation shaft (117), and the top of damping rotation shaft (117) is fixedly connected with pull rod (118).
2. A towing mechanism for a hand trolley according to claim 1, wherein: The left side wall of U type connecting ring (210) extends to the inner chamber of hollow connecting block (100), and the outer side wall of U type connecting ring (210) is slidably connected with the inner chamber wall of hollow connecting block (100), the bottom of traction block (114) extends to the inner chamber of lower through groove (110) through upper through groove (110) and U type connecting ring (210), the inner side wall of U type connecting ring (210) is slidably connected with the outer side wall of traction block (114), and the top of pull rod (118) extends to the outside of slot (116) through slot (116).
3. A towing mechanism for a hand trolley according to claim 1, wherein: The left and right side walls of pull rod (118) are fixedly connected with limiting block (120) on the upper and lower sides, the top of two limiting blocks (120) on the upper side is in contact with the bottom of top plate (112), the top of two limiting blocks (120) on the upper side is fixedly connected with reinforcing elastic lug (121), and the reinforcing elastic lug (121) on the left and right sides is respectively clamped with the left and right side walls of top plate (112), and the top of pull rod (118) is fixedly connected with handle.
4. A towing mechanism for a hand trolley according to claim 1, wherein: The right side wall of the hollow connecting block (100) is provided with air cavities (130) on the front and back sides, the air cavities (130) on the front and back sides are connected, the inner cavity wall of the air cavity (130) is slidably connected with a circular slider (131), the left side wall of the circular slider (131) is fixedly connected with a buffer spring (132), the end of the buffer spring (132) is fixedly connected with the left side wall of the inner cavity wall of the air cavity (130), the right side wall of the circular slider (131) is fixedly connected with a buffer rod (133), the ends of the buffer rods (133) on the front and back sides extend to the outside of the air cavity (130) and are fixedly connected with a buffer plate (134), and the right side wall of the buffer plate (134) is in contact with the left side wall of the mounting plate (200).
5. A towing mechanism for a hand trolley according to claim 4, wherein: The left side wall of the inner cavity of the hollow connecting block (100) is fixedly connected with a buffer rubber air bag (140), the buffer rubber air bag (140) is connected with the two air cavities (130), and the right side wall of the buffer rubber air bag (140) is fixedly connected with a rubber plate.
6. A towing mechanism for a hand trolley according to claim 4, wherein: A gasket is arranged between the right side wall of the buffer plate (134) and the left side wall of the mounting plate (200), and a sealing ring is arranged between the outer side wall of the buffer rod (133) and the inner cavity wall of the air cavity (130) on the right side of the circular slider (131).