Dragging device for forklift

Abstract

The invention discloses a dragging device for a forklift. The dragging device comprises a forklift body, a traction piece, a bearing frame, a clamping assembly and an anti-disengaging detection assembly. The bearing frame is fixedly arranged at the rear end of the forklift main body; the clamping assembly is fixedly arranged at the upper end of the bearing frame and used for fixing the traction piece. The anti-falling detection assembly comprises a guide rod, a fixed plate, a first elastic piece, a sliding plate, a detection wheel, an alarm, an alarm switch and a pressing plate, one end of the guide rod is fixedly connected with the bearing frame, the other end of the guide rod penetrates through the sliding plate and is fixedly connected with the fixed plate, the guide rod is sleeved with the first elastic piece, and the two ends of the first elastic piece abut against the fixed plate and the sliding plate correspondingly; the detection wheel is rotatably arranged at the lower end of the sliding plate and abuts against the traction piece, the alarm is fixedly connected with the sliding plate, the alarm switch is fixedly arranged on the side, close to the pressing plate, of the lower end of the alarm, the pressing plate is fixedly arranged on one side of the detection wheel and corresponds to the alarm switch in position, and the real-time detection and alarm functions are achieved.

Description

Technical Field

[0001] This invention belongs to the technical field of dock operation equipment, and particularly relates to a towing device for forklifts. Background Technology

[0002] In marine steel structure towing and loading operations, the traditional method relies on pulley winches and manual labor to lay the traction rope: a 750-ton crawler crane is used to lift a single steel wire rope, weighing approximately 0.8 tons, 32 meters long, and 52 mm in diameter, to a greased drag-reducing track, and then it is manually towed to the designated position using hemp ropes to connect the moving pulley block to the platform's slipper towing point. To reduce labor costs, existing technology uses forklifts with rope clamps for towing, but this method has significant drawbacks: 1. Poor stress stability: The forklift's built-in hook is not aligned when towing, resulting in uneven stress between the forklift and the tow rope during towing. This not only reduces the towing strength but also makes the forklift prone to deviation. 2. Insufficient clamping reliability: Traditional rope clamps are prone to slippage or slippage under high traction force. Forklifts have a large drag force, and once the traction rope slips, the forklift is very likely to overturn due to inertia. 3. Lack of safety early warning mechanism: The lack of real-time detection and alarm function for traction rope slippage leaves no buffer time when danger occurs, which can easily cause equipment damage or personal injury. 4. Low versatility: The rope clamp is fixedly connected to the forklift, making disassembly inconvenient and directly affecting the forklift's daily forking and loading functions.

[0003] Therefore, there is an urgent need to design a towing device for forklifts to solve the problems mentioned above. Summary of the Invention

[0004] The purpose of this invention is to provide a towing device for forklifts, which has the advantages of real-time detection and alarm functions, thereby improving forklift safety.

[0005] To achieve the above objectives, the specific technical solution of the towing device for forklifts according to the present invention is as follows: A towing device for a forklift includes: a forklift body, a load-bearing frame, a towing component, a clamping assembly, and an anti-detachment detection assembly; The support frame is fixedly installed at the rear end of the forklift body; The clamping assembly is fixedly disposed at the upper end of the support frame and is used to fix the traction component; The anti-detachment detection assembly includes a guide rod, a fixed plate, a first elastic element, a sliding plate, a detection wheel, an alarm, an alarm switch, and a pressure plate. One end of the guide rod is fixedly connected to the support frame, and the other end of the guide rod passes through the sliding plate and is fixedly connected to the fixed plate. The first elastic element is sleeved on the guide rod, and its two ends abut against the fixed plate and the sliding plate, respectively. The detection wheel is rotatably disposed at the lower end of the sliding plate and abuts against the traction element. The alarm is fixedly connected to the sliding plate. The alarm switch is fixedly disposed at the lower end of the alarm near the pressure plate. The pressure plate is fixedly disposed on one side of the detection wheel and corresponds to the position of the alarm switch.

[0006] Furthermore, the anti-detachment detection component also includes a bearing seat and a wheel axle. The lower end of the sliding plate is fixedly provided with a bearing seat, and the detection wheel is rotatably connected to the bearing seat through the wheel axle. A pressure plate is fixedly connected to the first end of the wheel axle.

[0007] Furthermore, the anti-detachment detection component also includes a second elastic element and a baffle plate. The second end of the wheel axle passes through the second elastic element and is fixedly provided with the baffle plate. The two ends of the second elastic element abut against the axle seat and the baffle plate, respectively.

[0008] Furthermore, the anti-detachment detection component also includes a limiting post, which is fixed to the side of the shaft seat near the pressure plate and is used to limit the starting position of the pressure plate.

[0009] Furthermore, the clamping assembly includes a clamping base, a clamping bracket, a first lead screw, and a clamping block. The clamping base is fixedly disposed at the upper end of the support frame, the clamping bracket is fixedly disposed at the upper end of the clamping base, the first lead screw passes through the top of the clamping bracket and is threadedly engaged with the top of the clamping bracket, the clamping block is fixedly connected to the bottom of the first lead screw, and the traction member is clamped between the clamping block and the clamping base.

[0010] Furthermore, the forklift body includes a reinforcing base, a sleeve is provided on the reinforcing base, and a plug-in post is fixedly provided on the support frame, the plug-in post being movably engaged inside the sleeve.

[0011] Furthermore, the sleeve is provided with a locking assembly for fixing the plug-in post. The locking assembly includes a connecting base, a guide post, an adjusting platform, and a locking rod. The connecting base is fixedly connected to the sleeve. The guide post is fixedly disposed at the upper end of the connecting base. The adjusting platform slides up and down along the guide post. The locking rod is fixedly disposed at the lower end of the adjusting platform for fixing and locking the plug-in post.

[0012] Furthermore, the insertion post is provided with multiple limiting holes, which are movably engaged with the locking rod.

[0013] Furthermore, the locking assembly also includes a second lead screw, the two ends of which are threadedly connected to the adjusting table and the connecting base, respectively.

[0014] Furthermore, the support frame is provided with a mounting bracket for engaging the traction component.

[0015] The forklift towing device of the present invention has the following advantages: High towing stability: By strengthening the centering design of the base and sleeve, the load-bearing frame and the forklift body are aligned, avoiding uneven force distribution during towing; the cooperation between the card seat and the clamping assembly further limits the position of the traction component and reduces the risk of traction component deviation. Convenient and reliable clamping: The clamping assembly adopts a structure of threaded drive and arc groove clamping. Rotating the first lead screw can quickly lock the traction component without the need for an additional rope clamp. The clamping force is controllable and adaptable to traction components of different diameters. Timely anti-detachment warning: The anti-detachment detection component uses the detection wheel to contact with the torsion spring for reset and audible and visual alarms to monitor the slippage of the traction component in real time. Even slight slippage of the traction component can trigger an alarm, allowing operators sufficient time to handle the situation and preventing complete slippage that could lead to danger. High versatility: The load-bearing frame can be quickly assembled and disassembled through the use of plug-in columns and locking components. Disassembly does not affect the daily forklift operation of the forklift body. The number of card seats and the type of towing component can be adjusted as needed to adapt to different operational requirements of single / multiple towing ropes, wire ropes / cables. Attached Figure Description

[0016] Figure 1 This is one of the structural schematic diagrams of a forklift towing device according to the present invention; Figure 2 This is a second schematic diagram of the structure of a forklift towing device according to the present invention; Figure 3 This is one of the partial structural schematic diagrams of the anti-detachment detection component of a forklift towing device according to the present invention; Figure 4 This is a second partial structural schematic diagram of the anti-detachment detection component of a forklift towing device according to the present invention; Figure 5 For the present invention Figure 3 Enlarged view of point A in the middle; Figure 6 This is a partial structural diagram of the clamping assembly of a forklift towing device according to the present invention. Figure 7This is a partial structural diagram of the locking assembly of a forklift towing device according to the present invention; Figure 8 This is a partial structural diagram of the support frame of a forklift towing device according to the present invention.

[0017] Explanation of markings in the diagram: 1. Forklift body; 101. Reinforced base; 102. Sleeve; 2. Traction component; 3. Bearing frame; 301. Insertion post; 3011. Limiting hole; 302. Card seat; 4. Clamping assembly; 401. Clamping base; 402. Clamping bracket; 403. First lead screw; 404. Clamping block; 5. Anti-detachment detection assembly; 501. Guide rod; 502. Fixing plate; 503. First elastic element; 504. Sliding plate; 505. Detection wheel; 506. Alarm; 507. Alarm switch; 508. Pressure plate; 509. Axle seat; 510. Wheel axle; 511. Second elastic element; 512. Baffle plate; 513. Limiting post; 6. Locking assembly; 601. Connecting base; 602. Guide post; 603. Adjusting platform; 604. Locking rod; 605. Second lead screw. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0020] The following is a reference to the appendix. Figure 1 To be continued Figure 8 This invention describes a towing device for a forklift.

[0021] like Figures 1 to 5 As shown, a towing device for a forklift includes: a forklift body 1, a support frame 3, a traction component 2, a clamping assembly 4, and an anti-detachment detection assembly 5; The support frame 3 is fixedly installed at the rear end of the forklift body 1; The clamping assembly 4 is fixedly disposed at the upper end of the support frame 3 and is used to fix the traction member 2; The anti-detachment detection component 5 includes a guide rod 501, a fixing plate 502, a first elastic element 503, a sliding plate 504, a detection wheel 505, an alarm 506, an alarm switch 507, and a pressure plate 508. One end of the guide rod 501 is fixedly connected to the support frame 3, and the other end of the guide rod 501 passes through the sliding plate 504 and is fixedly connected to the fixing plate 502. The first elastic element 503 is sleeved on the guide rod 501, and its two ends abut against the fixing plate 502 and the sliding plate 504, respectively. The detection wheel 505 is rotatably disposed at the lower end of the sliding plate 504 and abuts against the traction member 2. The alarm 506 is fixedly connected to the sliding plate 504. The alarm switch 507 is fixedly disposed at the lower end of the alarm 506 near the pressure plate 508. The pressure plate 508 is fixedly disposed on one side of the detection wheel 505 and corresponds to the position of the alarm switch 507.

[0022] Specifically, the anti-detachment detection component 5 is used to monitor the clamping status of the traction component 2 in real time to avoid the danger of slippage. Preferably, the guide rod 501 consists of two guide rods 501, symmetrically arranged. One end of each guide rod 501 is welded and fixed to the support frame 3, and the other end passes through the sliding plate 504 and is welded to the fixed plate 502, slidingly engaging with the sliding plate 504 (gap 0.1mm). Preferably, the fixed plate 502 is a rectangular steel plate with a thickness of 10mm, used to limit the end of the guide rod 501. The first elastic element 503 is preferably a compression spring (model Φ16×50, elastic coefficient 20N / mm), sleeved on the guide rod 501, with both ends abutting against the fixed plate 502 and the sliding plate 504 respectively, applying a spring force towards the support frame 3 to the sliding plate 504 to ensure that the detection wheel 505 is always tightly fitted with the traction component 2. Preferably, the sliding plate 504 is a rectangular steel plate with a thickness of 8mm, used to install the detection wheel 505 and the alarm. Alarm device 506; preferably, the detection wheel 505 is made of rubber with a Shore hardness of 70° to increase the friction with the traction component 2, and its outer circumference is in contact with the traction component 2. When the traction component 2 slides, it can synchronously drive the detection wheel 505 to rotate; preferably, the alarm device 506 is an audible and visual alarm device with a working voltage of 12V, a buzzer volume of ≥100dB, and a red light wavelength of 620~660nm. It is fixed to the upper end of the sliding plate 504 by bolts and can be powered by the forklift's own power supply or an independent battery; preferably, the alarm switch 507 is a micro switch, model KW12~3Z, which is fixed to the lower end of the alarm device 506 by screws and is electrically connected to the alarm device 506. Pressing it triggers the alarm; preferably, the pressure plate 508 is made of L-shaped steel plate (thickness 5mm), welded to one side of the detection wheel 505, and its position corresponds to the alarm switch 507. When the detection wheel 505 rotates, it can drive the pressure plate 508 to press the alarm switch 507.

[0023] Specifically, the traction component 2 is the core load-bearing component of the device, preferably a high-strength galvanized steel wire rope with a diameter of 30~60mm (such as the galvanized steel wire rope with a diameter of 52mm, a single weight of 0.8 tons, and a length of 32m used in this embodiment, which is corrosion resistant and has a tensile strength ≥1800MPa), or a suitable ultra-high molecular weight polyethylene cable (breaking strength ≥200kN). The specific selection is determined according to the weight of the marine steel structure (such as a single platform weight of 500~2000 tons) and the towing distance (10~50m) to ensure that it meets the high strength and corrosion resistance requirements of marine operations.

[0024] Furthermore, such as Figures 3 to 5 As shown, the anti-detachment detection component 5 also includes a bearing seat 509 and a wheel axle 510. The lower end of the sliding plate 504 is fixedly provided with the bearing seat 509. The detection wheel 505 is rotatably connected to the bearing seat 509 through the wheel axle 510. The first end of the wheel axle 510 is fixedly connected with a pressure plate 508.

[0025] Specifically, the bearing seat 509 is welded to the lower end of the sliding plate 504 and has a bearing hole to fit the wheel axle 510; the wheel axle 510 is made of 45# steel and is rotatably connected to the bearing seat 509 through a deep groove ball bearing; the detection wheel 505 is fixedly sleeved in the middle of the wheel axle 510; and the pressure plate 508 is welded to the first end of the wheel axle 510.

[0026] Furthermore, such as Figures 3 to 5 As shown, the anti-detachment detection component 5 also includes a second elastic element 511 and a baffle plate 512. The second end of the wheel axle 510 passes through the second elastic element 511 and is fixedly provided with the baffle plate 512. The two ends of the second elastic element 511 abut against the axle seat 509 and the baffle plate 512 respectively.

[0027] Specifically, the second elastic element 511 is preferably a torsion spring, Φ8×30, with a torsional stiffness of 1.5 N·m / rad, sleeved on the second end of the axle 510, with both ends abutting against the axle seat 509 and the baffle plate 512 respectively, providing rotational restoring force for the axle 510 and preventing the detection wheel 505 from shifting due to vibration. The baffle plate 512 is preferably a circular steel plate with a diameter of 20 mm, welded to the second end of the axle 510, used to limit the position of the second elastic element 511 and prevent it from falling off.

[0028] Furthermore, such as Figure 4 As shown, the anti-detachment detection component 5 also includes a limiting post 513, which is fixed to the side of the bearing seat 509 near the pressure plate 508. The limiting post 513 is used to limit the starting position of the pressure plate 508.

[0029] Specifically, the limiting post 513 is preferably a cylindrical pin with a diameter of 8mm and a length of 15mm, which is welded to the side of the bearing seat 509 near the pressure plate 508 to limit the initial position of the pressure plate 508 and prevent the pressure plate 508 from accidentally triggering the alarm switch 507 due to slight deformation of the first elastic element 503.

[0030] Furthermore, such as Figures 6 to 8 As shown, the clamping assembly 4 includes a clamping base 401, a clamping bracket 402, a first lead screw 403, and a clamping block 404. The clamping base 401 is fixedly disposed at the upper end of the support frame 3, and the clamping bracket 402 is fixedly disposed at the upper end of the clamping base 401. The first lead screw 403 passes through the top of the clamping bracket 402 and is threadedly engaged with the top of the clamping bracket 402. The clamping block 404 is fixedly connected to the bottom of the first lead screw 403. The traction member 2 is clamped between the clamping block 404 and the clamping base 401.

[0031] Specifically, the clamping assembly 4 is fixed to the upper end of the support frame 3 for rigidly fixing the traction component 2. The clamping assembly 4 includes: a clamping base 401 welded to the upper end of the support frame 3, with an arc-shaped groove (radius consistent with the radius of the traction component 2, such as 26mm) on the upper end surface for supporting the traction component 2; a clamping bracket 402 preferably having a "door" structure, with its lower end welded to both sides of the clamping base 401 (weld height 8mm, to improve strength), and an M20 threaded hole on the top; and a first lead screw 403: penetrating the threaded hole at the top of the clamping bracket 402. The upper end is welded with a handwheel (100mm in diameter, for easy manual rotation), and the lower end is rotatably connected to the clamping block 404 via a deep groove ball bearing (model 6205) to prevent the clamping block 404 from rotating synchronously with the screw. The lower end face of the clamping block 404 is provided with an arc-shaped groove that matches the traction component 2, and both sides slide against the inner side wall of the clamping bracket 402 (gap 0.5mm). The clamping / releasing of the traction component 2 is achieved by raising and lowering the first screw 403, and finally the traction component 2 is clamped between the clamping block 404 and the arc-shaped groove of the clamping base 401 without loosening or displacement.

[0032] Furthermore, such as Figures 1 to 8 As shown, the forklift body 1 includes a reinforcing base 101, a sleeve 102 is provided on the reinforcing base 101, and a plug-in post 301 is fixedly provided on the support frame 3, the plug-in post 301 is movably engaged inside the sleeve 102.

[0033] Specifically, a reinforced base 101 is fixedly welded to the rear end of the forklift body 1. It is made of Q345B high-strength steel to improve the deformation resistance of the connection part and adapt to the high traction requirements of marine operations. A sleeve 102 is integrally formed on the reinforced base 101. A plug-in post 301 is welded and fixed to the lower end of the support frame 3. The plug-in post 301 is clearance-fitted with the inner hole of the sleeve 102 and can be movably snapped into the inside of the sleeve 102 to achieve the initial positioning of the support frame 3 and the forklift body 1.

[0034] Furthermore, such as Figures 1 to 8 As shown, the sleeve 102 is provided with a locking assembly 6 for fixing the plug-in post 301. The locking assembly 6 includes a connecting base 601, a guide post 602, an adjusting platform 603, and a locking rod 604. The connecting base 601 is fixedly connected to the sleeve 102. The guide post 602 is fixedly disposed at the upper end of the connecting base 601. The adjusting platform 603 slides up and down along the guide post 602. The locking rod 604 is fixedly disposed at the lower end of the adjusting platform 603 for fixing and locking the plug-in post 301.

[0035] Furthermore, such as Figures 1 to 8 The plug-in post 301 shown has multiple limiting holes 3011, which are movably engaged with the locking rod 604.

[0036] Furthermore, such as Figures 1 to 8 The locking assembly 6 shown also includes a second lead screw 605, the two ends of which are threadedly connected to the adjusting table 603 and the connecting base 601, respectively.

[0037] Specifically, the sleeve 102 is provided with a locking assembly 6 for fixing the insertion post 301. The connecting base 601 is welded and fixed to the sleeve 102, providing an installation base for the locking assembly 6. The guide post 602 is vertically welded to the upper end of the connecting base 601 to limit the sliding direction of the adjusting platform 603. The adjusting platform 603 has a sliding hole adapted to the guide post 602, which can slide up and down along the guide post 602. The locking rod 604 is vertically welded to the lower end of the adjusting platform 603, and the number matches the limiting hole 3011 (usually 2 to 4 rods to ensure fixing stability). The two leadscrews 605 pass through the adjusting platform 603 and the connecting base 601 respectively, and are threaded to both (the thread precision is M16×2, which improves the transmission stability). By rotating the second leadcrew 605, the adjusting platform 603 can be driven to rise and fall, which in turn drives the locking rod 604 to move. The limiting hole 3011 is opened along the height direction of the plug-in post 301 (50mm spacing) and is adapted to the diameter of the locking rod 604 (0.1~0.2mm gap). The locking rod 604 can be movably locked in the limiting hole 3011 to achieve rigid fixation of the plug-in post 301.

[0038] Furthermore, such as Figure 3 As shown, the support frame 3 is provided with a mounting bracket 302 for engaging the traction member 2.

[0039] Specifically, a card holder 302 is welded to the upper end of the support frame 3. The number of card holders 302 is adapted to the number of traction components 2 (e.g., one card holder 302 corresponds to a single traction component 2, and two to four parallel card holders 302 correspond to multiple parallel traction components 2). The inner arc surface of the card holder 302 is clearance-fitted with the outer circumferential surface of the traction component 2 to pre-define the lateral position of the traction component 2 and prevent the traction component 2 from shifting during dragging. The card holder 302 and the clamping assembly 4 form a double fixation of pre-positioning and rigid clamping.

[0040] The present invention will be further illustrated by specific embodiments below, but these embodiments do not limit the scope of protection of the present invention.

[0041] Align the insertion post 301 at the lower end of the support frame 3 with the sleeve 102 on the rear reinforcing base 101 of the forklift body 1, and insert it axially along the sleeve 102 until the lower end of the insertion post 301 abuts against the bottom of the sleeve 102. Rotate the second lead screw 605 of the locking assembly 6 clockwise. The threaded drive causes the adjusting table 603 to slide downward along the guide post 602, simultaneously causing the locking rod 604 to insert into the limiting hole 3011 of the insertion post 301. Continue to rotate the second lead screw 605 until the lower end of the adjusting table 603 is in contact with the upper end of the connecting base 601, and the locking rod 604 is fully engaged in the limiting hole 3011, completing the support frame assembly. For fixing the carrier frame 3, based on the weight of the steel structure being towed and loaded onto the ship (e.g., a 1000-ton platform), a high-strength galvanized steel wire rope with a diameter of 52mm and a length of 32m is selected as the traction component 2. One end of the traction component 2 is sequentially inserted into the arc-shaped groove of the carrier frame 3's mounting base 302 and the clamping base 401. The first lead screw 403 of the clamping assembly 4 is rotated clockwise, and the first lead screw 403 moves downward along the threaded hole of the clamping bracket 402, causing the clamping block 404 to slide down synchronously. This continues until the arc-shaped groove of the clamping block 404 is tightly fitted with the outer circumference of the traction component 2, ensuring that the traction component 2 has no lateral / longitudinal displacement, thus completing the clamping. Check the compression state of the spring to ensure that the sliding plate 504 is in contact with the traction component 2 under the action of the spring force, and that the detection wheel 505 can rotate synchronously with the sliding of the traction component 2; observe the initial position of the pressure plate 508 to ensure that it abuts against the limit post 513 and does not contact the alarm switch 507. If it is offset, rotate the wheel shaft 510 to adjust it until it is in contact with the limit post 513; turn on the power of the alarm 506, manually press the alarm switch 507, and confirm that the alarm 506 emits a buzzer sound and a red light. The debugging is complete. Start the forklift body 1 and control the forklift to move away from the steel structure along the slide at a speed of 5-10 m / min. The steel structure is driven to slide towards the ship along the slide by the traction component 2. During the operation, observe the anti-detachment detection component 5 in real time: if the traction component 2 is stable, the detection wheel 505 is stationary and the alarm 506 does not sound; if the traction component 2 slips, the detection wheel 505 rotates and drives the pressure plate 508 to press the alarm switch 507, and the alarm 506 sounds with sound and light, and the forklift is stopped immediately; if the clamping component 4 is loose, rotate the first lead screw 403 again to a torque of 50 N·m; if the traction component 2 is worn (the number of broken wires is ≥3), replace it with a new steel wire rope and continue the operation; after the steel structure is dragged to the designated position on the ship, stop the forklift, rotate the first lead screw 403 counterclockwise to release the clamping block 404, disassemble the traction component 2, and complete one operation. After the operation is completed, rotate the second lead screw 605 of the locking assembly 6 counterclockwise to raise the adjusting table 603 and disengage the locking rod 604 from the limiting hole 3011; pull the support frame 3 upward to disengage the plug post 301 from the sleeve 102, thus completing the separation of the support frame 3 from the forklift.

[0042] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A towing device for a fork lift truck, characterized in that Include: Forklift body, traction, bearing frame, clamping assembly and anti-off detection assembly; The bearing frame is fixedly arranged at the rear end of the forklift body; The clamping assembly is fixedly arranged at the upper end of the bearing frame and is used for fixing the traction; The anti-off detection assembly includes a guide rod, a fixed plate, a first elastic element, a sliding plate, a detection wheel, an alarm, an alarm switch and a pressing plate, one end of the guide rod is fixedly connected with the bearing frame, the other end of the guide rod penetrates through the sliding plate and is fixedly connected with the fixed plate, the first elastic element is sleeved on the guide rod and the two ends thereof are respectively abutted with the fixed plate and the sliding plate, the detection wheel is rotatably arranged at the lower end of the sliding plate and abuts with the traction, the alarm is fixedly connected with the sliding plate, the alarm switch is fixedly arranged at the lower end of the alarm and is close to one side of the pressing plate, and the pressing plate is fixedly arranged at one side of the detection wheel and corresponds to the position of the alarm switch.

2. A tow arrangement for a fork lift truck according to claim 1, characterised in that, The anti-off detection assembly further includes an axle seat and an axle, the lower end of the sliding plate is fixedly provided with an axle seat, the detection wheel is rotatably connected with the axle seat through an axle, and a first end of the axle is fixedly connected with a pressing plate.

3. A tow device for a fork lift truck according to claim 2, characterised in that, The anti-off detection assembly further includes a second elastic element and a shielding plate, a second end of the axle penetrates through the second elastic element and is fixedly provided with the shielding plate, and the two ends of the second elastic element are fixedly connected with the axle seat and the shielding plate respectively.

4. The drag device for a fork truck according to claim 2, wherein The anti-off detection assembly further includes a limiting column, the limiting column is fixed on one side of the axle seat close to the pressing plate, and the limiting column is used for limiting the starting position of the pressing plate.

5. The drag device for a fork truck according to claim 1, wherein The clamping assembly includes a clamping base, a clamping support, a first lead screw and a clamping block, the clamping base is fixedly arranged at the upper end of the bearing frame, the clamping support is fixedly arranged at the upper end of the clamping base, the first lead screw penetrates through the top of the clamping support and is threadedly matched with the top of the clamping support, the clamping block is fixedly connected with the bottom of the first lead screw, and the traction is clamped between the clamping block and the clamping base.

6. The drag device for a fork truck as set forth in claim 1, wherein, The forklift body includes a reinforcing base, the reinforcing base is provided with a sleeve seat, the bearing frame is fixedly provided with a plug-in column, and the plug-in column is movably clamped in the inside of the sleeve seat.

7. A drag device for a fork lift truck according to claim 6, characterised in that, The sleeve seat is provided with a locking assembly for fixing the plug-in column, the locking assembly includes a connecting base, a guide column, an adjusting table and a locking rod, the connecting base is fixedly connected with the sleeve seat, the guide column is fixedly arranged at the upper end of the connecting base, the adjusting table slides up and down along the guide column, and the locking rod is fixedly arranged at the lower end of the adjusting table and is used for fixing and locking the plug-in column.

8. The drag device for a fork lift truck according to claim 7, characterized in that, A plurality of limiting holes are formed in the plug-in column, and the limiting holes are movably clamped with the locking rod.

9. The drag device for a fork truck according to claim 7, wherein The locking assembly further includes a second lead screw, and the two ends of the second lead screw are threadedly connected with the adjusting table and the connecting base respectively.

10. The drag device for a fork truck according to claim 1, wherein The bearing frame is provided with a clamping seat for clamping the traction.

Images