An automatically triggered height-adjustable traction device

Abstract

This utility model discloses an automatically triggered height-adjustable traction device, relating to the field of traction equipment technology. The utility model includes a height adjustment mechanism and a traction mechanism, with the traction mechanism located on one side of the height adjustment mechanism. Through the linkage design of the turntable, connecting rod, and locking pin in the limiting component of the height adjustment mechanism, the locking can be released simply by pulling the limiting handle. The sliding block can then freely slide along the track of the fixed slide to the target height. After releasing the handle, the locking pin automatically resets under the action of a spring and engages with the positioning hole, achieving rapid positioning. In the traction mechanism, the arc-shaped pin and the pin hole lock the latch under normal conditions, ensuring the traction pin is in a stable state. When the traction pin is impacted by the traction ring, the latch is impacted, pushing the second drive block to rotate. The arc-shaped pin disengages from the pin hole, releasing the limiting mechanism. The tension spring instantly releases its elastic force, causing the latch to reverse and engage the traction pin, achieving automatic locking.

Description

Technical Field

[0001] This utility model belongs to the field of traction equipment technology, and in particular relates to an automatically triggered height-adjustable traction device. Background Technology

[0002] With the continuous development of fields such as rail transit vehicle maintenance and logistics warehousing cargo transfer, traction devices, as key components for moving equipment or goods, are receiving increasing attention for their performance stability and ease of operation.

[0003] Traditional traction devices typically employ a fixed-height design or rely on bolt fastening or screw lifting mechanisms for height adjustment. However, these structures have significant drawbacks: firstly, height adjustment requires repeated measurement and tightening, making the process cumbersome and time-consuming, and unsuitable for rapid operational demands; secondly, the locking function of the traction mechanism often relies on manual engagement or simple mechanical latches, failing to automatically trigger locking when the traction pin is subjected to sudden impacts (such as a sudden increase in traction load), easily leading to the traction pin detaching and causing safety accidents. Furthermore, the high structural complexity and maintenance costs of existing devices further limit their application in practical scenarios.

[0004] To address these issues, we provide an automatically triggered height-adjustable traction device. Utility Model Content

[0005] The purpose of this invention is to provide an automatically triggered height-adjustable traction device. By cooperating with the height adjustment mechanism and the traction mechanism, it solves the problems of inefficient adjustment and unreliable locking in existing traction devices.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0007] This utility model relates to an automatically triggered height-adjustable traction device, comprising a height adjustment mechanism and a traction mechanism. The traction mechanism is provided on one side of the height adjustment mechanism. The height adjustment mechanism includes a fixed slide, a sliding block slidably connected to the inner side of the fixed slide, and a limiting component disposed in the inner cavity of the sliding block. The traction mechanism includes a housing fixedly connected to one side of the sliding block, a rotating shaft rotatably connected to the inner cavity of the housing via a bearing seat, a first driving block fixedly connected to the surface of the rotating shaft, a traction pin slidably connected to one side of the first driving block, a second driving block rotatably connected to the inner cavity of the housing via a bearing seat, a locking tongue fixedly connected to one side of the second driving block, a tension spring fixedly connected to one side of the second driving block, and an arc-shaped pin fixedly connected to the surface of the first driving block.

[0008] The present invention is further provided that the inner side of the fixed slide is provided with a slide track, and the inner cavity of the slide track is provided with a positioning hole.

[0009] The present invention is further configured such that the limiting component includes a turntable rotatably connected to the inner cavity of the sliding block via a bearing seat, a connecting rod movably connected to the surface of the turntable, a locking pin movably connected to the other end of the connecting rod, a spring fixedly connected to one side of the locking pin, and a limiting handle fixedly connected to one side of the turntable. Pulling the limiting handle causes the turntable to rotate, and the turntable moves the locking pin via the connecting rod, causing it to disengage from the positioning hole. The sliding block is adjusted to the target height along the fixed slide track. Then, the limiting handle is released, and the locking pin is engaged in the positioning hole under the action of the spring, thus completing the limiting.

[0010] The present invention is further configured such that there are two locking pins, and the other end of the spring is fixedly connected to the inner cavity of the sliding block.

[0011] The present invention is further configured such that an operating handle is fixedly connected to one end of the rotating shaft, and a pin hole adapted to the arc-shaped pin is opened on the surface of the second driving block. The arc-shaped pin is fixed to the edge of the first driving block and is initially inserted into the pin hole of the second driving block for locking.

[0012] The present invention is further configured such that the other end of the tension spring is fixedly connected to the inner cavity of the housing, and the two ends of the tension spring are respectively connected to the second drive block and the inner wall of the housing, and are normally tightened to keep the locking tongue closed.

[0013] The present invention has the following beneficial effects.

[0014] 1. This utility model utilizes the linkage design of the turntable, connecting rod, and locking pin in the height adjustment mechanism's limiting component. Simply pulling the limiting handle releases the lock, allowing the sliding block to freely slide along the fixed slide to the target height. Releasing the handle causes the locking pin to automatically reset under spring pressure and engage with the positioning hole, achieving rapid positioning and improving the efficiency of height adjustment. In the traction mechanism, the arc-shaped pin and pin hole lock the locking tongue under normal conditions, ensuring the traction pin remains stable. When the traction pin is impacted by the traction ring, the locking tongue is impacted, pushing the second drive block to rotate. The arc-shaped pin disengages from the pin hole, releasing the limiting position. The tension spring instantly releases its elasticity, causing the locking tongue to engage the traction pin in the opposite direction, achieving automatic locking and improving the safety of traction operations.

[0015] 2. This utility model integrates various functional modules (height adjustment and traction locking) into the sliding block and the housing, which reduces dependence on external power, simplifies the overall structure, and reduces manufacturing and maintenance costs, making it suitable for promotion and application in various scenarios.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0018] Figure 1 This is a perspective view of an automatically triggered height-adjustable traction device.

[0019] Figure 2 This is a diagram showing the coordination between the traction mechanism and the height adjustment mechanism in an automatically triggered height-adjustable traction device.

[0020] Figure 3 This is a schematic diagram of a limit component in an automatically triggered height-adjustable traction device.

[0021] Figure 4 This is a schematic diagram of the traction mechanism in an automatically triggered height-adjustable traction device.

[0022] In the attached diagram: 1. Height adjustment mechanism; 101. Fixed slide; 102. Sliding block; 103. Limiting component; 1031. Turntable; 1032. Connecting rod; 1033. Locking pin; 1034. Spring; 1035. Limiting handle; 2. Traction mechanism; 201. Housing; 202. Rotating shaft; 203. First drive block; 204. Traction pin; 205. Locking tongue; 206. Tension spring; 207. Arc-shaped pin; 208. Second drive block; 3. Slide track; 4. Positioning hole; 5. Operating handle. Detailed Implementation

[0023] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example 1

[0025] Please see Figures 1-4 This utility model is an automatically triggered height-adjustable traction device, including a height adjustment mechanism 1 and a traction mechanism 2. The traction mechanism 2 is provided on one side of the height adjustment mechanism 1. The height adjustment mechanism 1 includes a fixed slide 101, a sliding block 102 slidably connected to the inner side of the fixed slide 101, a limiting component 103 provided in the inner cavity of the sliding block 102, a slide track 3 provided in the inner side of the fixed slide 101, and a positioning hole 4 opened in the inner cavity of the slide track 3. The limiting component 103 includes a turntable 1031 rotatably connected to the inner cavity of the sliding block 102 through a bearing seat, a connecting rod 1032 movably connected to the surface of the turntable 1031, a locking pin 1033 movably connected to the other end of the connecting rod 1032, a spring 1034 fixedly connected to one side of the locking pin 1033, and a limiting handle 1035 fixedly connected to one side of the turntable 1031. There are two locking pins 1033, and the other end of the spring 1034 is fixedly connected to the inner cavity of the sliding block 102.

[0026] Further details: The fixed slide 101 has a built-in slide track 3 and positioning hole 4, which is fixedly connected to the rear of the towing vehicle. The sliding block 102 is dynamically locked to the fixed slide 101 through the limiting component 103. The limiting component 103 enables the sliding block 102 to be quickly positioned. The sliding block 102 and the slide track 3 form a clearance fit. Pulling the limiting handle 1035 drives the turntable 1031 to rotate. The turntable 1031 drives the locking pin 1033 to move through the connecting rod 1032, causing it to disengage from the positioning hole 4. Adjust the sliding block 102 to the target height along the slide track 3 of the fixed slide 101. Then release the limiting handle 1035. The locking pin 1033 is engaged in the positioning hole 4 under the action of the spring 1034, completing the limiting.

[0027] Example 2

[0028] Please see Figures 1-4 Based on Embodiment 1, the traction mechanism 2 includes a housing 201 fixedly connected to one side of the sliding block 102, a rotating shaft 202 rotatably connected to the inner cavity of the housing 201 via a bearing seat, a first drive block 203 fixedly connected to the surface of the rotating shaft 202, a traction pin 204 slidably connected to one side of the first drive block 203, a second drive block 208 rotatably connected to the inner cavity of the housing 201 via a bearing seat, a locking tongue 205 fixedly connected to one side of the second drive block 208, a tension spring 206 fixedly connected to one side of the second drive block 208, an arc-shaped pin 207 fixedly connected to the surface of the first drive block 203, an operating handle 5 fixedly connected to one end of the rotating shaft 202, a pin hole adapted to the arc-shaped pin 207 opened on the surface of the second drive block 208, and the other end of the tension spring 206 fixedly connected to the inner cavity of the housing 201.

[0029] Further details: The housing 201 is fixed to the side wall of the sliding block 102. The rotating shaft 202 passes through the housing 201, and one end of it is connected to the operating handle 5. The first drive block 203 is fixed to the middle of the rotating shaft 202. The traction pin 204 is embedded in its oblique groove. The second drive block 208 is installed in the housing 201 through the bearing. The surface has a pin hole. The side is fixed with the locking tongue 205. The two ends of the tension spring 206 are respectively connected to the second drive block 208 and the inner wall of the housing 201. Under normal conditions, it is tightened to keep the locking tongue 205 closed. The arc-shaped pin 207 is fixed to the edge of the first drive block 203. The initial position is inserted into the pin hole of the second drive block 208 for locking.

[0030] The working principle of this utility model is as follows: In the initial state, the sliding block 102 is fixed to the target height position of the fixed slide 101 by the limiting component 103. When the height needs to be adjusted, the operator pulls the limiting handle 1035, and the turntable 1031 pushes the locking pin 1033 along the inner cavity of the sliding block 102 through the connecting rod 1032 until the locking pin 1033 is completely disengaged from the positioning hole 4 in the slide 3 of the fixed slide 101. At this time, the sliding block 102 loses the limiting constraint and can slide freely along the slide 3. After the sliding block 102 is adjusted to the required height, the limiting handle 1035 is released, and the locking pin 1033 moves in the opposite direction along the connecting rod 1032 under the elastic restoring force of the spring 1034, and re-engages in the positioning hole 4 at the corresponding position in the slide 3, thus completing the height locking of the sliding block 102 and realizing the height adjustment.

[0031] During traction operation, rotating the operating handle 5 causes the first drive block 203 to rotate synchronously via the rotating shaft 202. During the rotation of the first drive block 203, the inclined groove on its surface pushes the traction pin 204 upward, releasing the limit on the traction ring. At the same time, the arc-shaped pin 207 on the edge of the first drive block 203 is inserted into the pin hole of the second drive block 208 as it rotates, forming an axial limit on the second drive block 208 through the pin hole, keeping the second drive block 208 stationary. At this time, the locking tongue 205 is in a closed state under the tension of the tension spring 206 (blocking the traction pin 204).

[0032] When the traction ring impacts the traction pin 204 due to load changes or accidental impact, the traction pin 204 experiences an instantaneous impact force along the traction direction, pushing the locking tongue 205 to rotate away from the tension spring 206. As the locking tongue 205 rotates, it drives the second drive block 208 to rotate synchronously. The movement of the second drive block 208 causes the pin hole to disengage from the arc-shaped pin 207, releasing the arc-shaped pin 207 from its limiting position on the second drive block 208. At this moment, the tension spring 206 loses its constraint and instantaneously releases its elastic force, pushing the second drive block 208 to rotate in the opposite direction. This, in turn, causes the locking tongue 205 to quickly engage the traction pin 204, relocking the traction pin 204 and completing the automatic locking process to prevent the traction pin 204 from falling off due to impact.

[0033] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An automatically triggered height-adjustable traction device, comprising a height adjustment mechanism (1) and a traction mechanism (2), characterized in that: A traction mechanism (2) is provided on one side of the height adjustment mechanism (1); The height adjustment mechanism (1) includes a fixed slide (101), a sliding block (102) slidably connected to the inner side of the fixed slide (101), and a limiting component (103) disposed in the inner cavity of the sliding block (102). The traction mechanism (2) includes a housing (201) fixedly connected to one side of the sliding block (102), a rotating shaft (202) rotatably connected to the inner cavity of the housing (201) via a bearing seat, a first drive block (203) fixedly connected to the surface of the rotating shaft (202), a traction pin (204) slidably connected to one side of the first drive block (203), a second drive block (208) rotatably connected to the inner cavity of the housing (201) via a bearing seat, a locking tongue (205) fixedly connected to one side of the second drive block (208), a tension spring (206) fixedly connected to one side of the second drive block (208), and an arc-shaped pin (207) fixedly connected to the surface of the first drive block (203).

2. The automatically triggered height-adjustable traction device according to claim 1, characterized in that: The fixed slide (101) has a slide track (3) on its inner side, and the inner cavity of the slide track (3) has a positioning hole (4).

3. The automatically triggered height-adjustable traction device according to claim 1, characterized in that: The limiting assembly (103) includes a turntable (1031) rotatably connected to the inner cavity of the sliding block (102) via a bearing seat, a connecting rod (1032) movably connected to the surface of the turntable (1031), a locking pin (1033) movably connected to the other end of the connecting rod (1032), a spring (1034) fixedly connected to one side of the locking pin (1033), and a limiting handle (1035) fixedly connected to one side of the turntable (1031).

4. The automatically triggered height-adjustable traction device according to claim 3, characterized in that: There are two locking pins (1033), and the other end of the spring (1034) is fixedly connected to the inner cavity of the sliding block (102).

5. The automatically triggered height-adjustable traction device according to claim 1, characterized in that: One end of the rotating shaft (202) is fixedly connected to an operating handle (5), and the surface of the second driving block (208) is provided with a pin hole that matches the arc-shaped pin (207).

6. The automatically triggered height-adjustable traction device according to claim 1, characterized in that: The other end of the tension spring (206) is fixedly connected to the inner cavity of the housing (201).

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