Hook arm hook structure of hook arm vehicle

Abstract

The utility model discloses a hook arm and hook structure of a hook arm vehicle, which relates to the technical field of hook arms and hooks and comprises a hook arm, a semicircular hook fixedly connected to the right end of the hook arm, a connecting frame fixedly connected to the inner side of the hook arm and close to the hook, a rotating shaft rotatably connected to the right side of the connecting frame, and support plates fixedly connected to two ends of the rotating shaft. A lock rod is fixedly connected between the heads of the support plates, and a lock groove is formed in the head of the hook corresponding to the lock rod; the device further comprises a locking assembly and a lubricating assembly. The locking assembly is used for driving the rotating shaft to rotate and automatically locking the rotating shaft after the rotating shaft is in place, and the lubricating assembly is used for spraying lubricating oil to the inner wall of the hook. The anti-theft lock has the following advantages that the locking assembly drives the lock rod to rotate, when the lock rod enters the lock groove, the rotating shaft is locked, the lock rod is prevented from being separated from the lock groove, and the unhooking event is avoided; and the safety is improved. Lubricating oil is sprayed into the hook through the lubricating assembly, the friction force of the hook at the hooking position of the truck bed is reduced, and then noise is reduced.

Description

Technical Field

[0001] This utility model relates to the field of hook arm hook technology, and in particular to a hook arm hook structure for a hook arm vehicle. Background Technology

[0002] The hooklift truck adopts a fully hydraulic control system, and the truck body and chassis can be completely separated. It has the advantages of reasonable structure, simple operation, stability, high efficiency, good sealing performance, and convenient tipping. It can realize the joint operation of one truck with multiple truck bodies for cyclical transportation, which fully improves the vehicle's transportation capacity. It can carry multiple boxes with one truck, which is efficient, energy-saving, and cost-effective.

[0003] Hooklift trucks typically connect to the cargo box via hooks on their hook arms. However, current hooks generally have open openings and lack safety protection structures, making them prone to detachment from the cargo box. Additionally, during use, the hooks often become uneven due to impacts over time, increasing friction on the inner walls. When the hooks connect to the cargo box, the increased friction generates significant noise, affecting the surrounding environment.

[0004] Therefore, it is necessary to improve the existing technology to solve the above-mentioned technical problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a hook hook structure for a hooklift truck, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a hook arm hook structure for a hook arm vehicle, including a hook arm, a semi-circular hook fixedly connected to the right end of the hook arm, a connecting frame fixedly connected to the inner side of the hook arm near the hook, a semi-circular cavity integrally formed on the right side of the connecting frame, a rotating shaft rotatably connected to the center of the cavity, support plates fixedly connected to both ends of the rotating shaft, a locking rod fixedly connected between the heads of the support plates, and a locking groove opened at the head of the hook corresponding to the position of the locking rod.

[0007] The hook arm hook structure of the hook arm truck also includes a locking assembly and a lubrication assembly; the locking assembly is used to drive the rotating shaft to rotate and automatically lock it after the rotating shaft is in place, and the lubrication assembly is used to spray lubricating oil onto the inner wall of the hook.

[0008] As a further technical solution of this utility model, the locking assembly includes a shaft and a servo motor. The shaft is rotatably connected to the connecting frame, and a worm gear is fixedly connected to the shaft. A worm wheel that meshes with the worm gear is fixedly connected to the rotating shaft. A mounting plate is fixedly connected inside the connecting frame. The servo motor is fixedly connected to the mounting plate. A first gear is fixedly connected to the output shaft of the servo motor, and a second gear that meshes with the first gear is fixedly connected to the rotating shaft.

[0009] As a further technical solution of this utility model, the lead angle of the worm is smaller than the equivalent friction angle between the worm wheel and the meshing teeth of the worm.

[0010] As a further technical solution of this utility model, the lubrication component includes a storage tank, a spray pipe, and a pump body. The storage tank is fixedly connected to the inner wall of the hook arm, and an addition pipe is fixedly connected to the storage tank. The head of the addition pipe is threadedly connected to a cover. The spray pipe passes through the connecting frame and is fixedly connected to the connecting frame. A nozzle is fixedly connected to the right end of the spray pipe. The pump body is fixedly connected between the storage tank and the connecting frame. The inlet and outlet of the pump body are respectively connected to the storage tank and the spray pipe through pipes.

[0011] As a further technical solution of this utility model, a pair of spray pipes are symmetrically arranged at the front and rear, and the left ends of the two spray pipes are fixedly connected to a connecting pipe, and the middle part of the connecting pipe is connected to the pipe at the pump outlet.

[0012] As a further technical solution of this utility model, a storage battery and a PLC controller are fixedly connected to the outer wall of the connecting frame. The power interface of the PLC controller is electrically connected to the storage battery. The signal input terminal of the PLC controller is electrically connected to a wireless receiver. The PLC controller also includes a wireless transmitter used in conjunction with the wireless receiver. The control output terminal of the PLC controller is electrically connected to a pump body and a forward and reverse rotation control module. The forward and reverse rotation control module is electrically connected to a servo motor.

[0013] This utility model provides a hook hook structure for a hooklift truck, which has the following advantages compared with the prior art:

[0014] Beneficial effects:

[0015] 1. The locking assembly drives the rotating shaft to rotate, which in turn drives the support plate and the locking rod to rotate, thereby opening or closing the opening at the connection frame and the hook. When the locking rod enters the lock groove, the locking assembly brakes, locking the rotating shaft and preventing the locking rod from separating from the lock groove, thus preventing the hook from coming off and improving safety.

[0016] 2. When the inside of the hook is dry, the unevenness inside the hook will cause a lot of noise due to the large friction at the point where the hook is attached to the vehicle body. At this time, lubricating oil can be sprayed into the hook through the lubrication component to reduce the friction at the point where the hook is attached to the vehicle body, thereby reducing the noise. Attached Figure Description

[0017] Figure 1 This is an isometric view of the hook hook structure of the hooklift truck described in this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the connecting frame described in this utility model;

[0019] Figure 3 for Figure 2 A magnified view of a portion at point A shown;

[0020] Figure 4 This is a schematic diagram of the rotating shaft, support plate, and locking rod described in this utility model;

[0021] Figure 5 This is a control circuit diagram of the water pump and servo motor described in this utility model.

[0022] In the diagram: 1-Hook arm, 11-Hook, 12-Connecting frame, 13-Cavity, 14-Rotating shaft, 15-Support plate, 16-Locking rod, 17-Locking groove, 21-Shaft, 22-Servo motor, 23-Worm gear, 24-Worm wheel, 25-Mounting plate, 26-First gear, 27-Second gear, 31-Storage box, 32-Spraying pipe, 33-Pump body, 34-Adding pipe, 35-Cover, 36-Spray nozzle, 37-Connecting pipe, 41-Battery, 42-PLC controller, 43-Wireless receiver, 44-Wireless transmitter, 45-Forward and reverse control module. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-5 The present invention has the following four specific embodiments.

[0025] Example 1

[0026] A hook arm hook structure for a hook arm truck includes a hook arm 1, a semi-circular hook 11 fixedly connected to the right end of the hook arm 1, a connecting frame 12 fixedly connected to the inner side of the hook arm 1 near the hook 11, a semi-circular cavity 13 integrally formed on the right side of the connecting frame 12, a rotating shaft 14 rotatably connected to the center of the cavity 13, support plates 15 fixedly connected to both ends of the rotating shaft 14, a locking rod 16 fixedly connected between the heads of the support plates 15, and a locking groove 17 opened at the head of the hook 11 corresponding to the position of the locking rod 16.

[0027] The hook hook structure of the hooklift truck also includes a locking component and a lubrication component; the locking component is used to drive the rotating shaft 14 to rotate and automatically lock it after the rotating shaft 14 is in place, and the lubrication component is used to spray lubricating oil onto the inner wall of the hook 11.

[0028] In this embodiment, as Figure 1 and Figure 2 As shown, the locking assembly drives the rotating shaft 14 to rotate, which in turn drives the support plate 15 and the locking rod 16 to rotate. This causes the opening at the connection frame 12 and the hook 11 to open or close. When the locking rod 16 enters the locking groove 17, the locking assembly brakes, and the rotating shaft 14 automatically locks, thus preventing the locking rod 16 from separating from the locking groove 17, avoiding hook disengagement, and improving safety. When the inside of the hook 11 is dry, due to the unevenness inside the hook 11, the hook 11 will produce a lot of noise at the point of contact with the vehicle body due to high friction. At this time, lubricating oil can be sprayed into the hook 11 through the lubrication assembly to reduce the friction at the point of contact with the vehicle body, thereby reducing noise.

[0029] Example 2

[0030] The locking assembly includes a shaft 21 and a servo motor 22. The shaft 21 is rotatably connected in the connecting frame 12. A worm gear 23 is fixedly connected to the shaft 21. A worm wheel 24 that meshes with the worm gear 23 is fixedly connected to the rotating shaft 14. A mounting plate 25 is fixedly connected inside the connecting frame 12. The servo motor 22 is fixedly connected to the mounting plate 25. A first gear 26 is fixedly connected to the output shaft of the servo motor 22. A second gear 27 that meshes with the first gear 26 is fixedly connected to the rotating shaft 14.

[0031] Preferably, the lead angle of the worm 23 is smaller than the equivalent friction angle between the meshing teeth of the worm wheel 24 and the worm 23.

[0032] In this embodiment, the difference from Embodiment 1 is that this embodiment further discloses the technical features of the locking mechanism, such as... Figures 2-4 As shown, when the servo motor 22 is working, it drives the first gear 26 to rotate, and the second gear 27 meshing with it to rotate, thereby rotating the shaft 21 and the worm 23. The worm wheel 24 meshing with the worm 23 rotates, thereby driving the rotating shaft 14, the support plate 15 and the locking rod 16 to rotate.

[0033] Because the lead angle of worm 23 is less than the equivalent friction angle between the meshing teeth of worm wheel 24 and worm 23, worm 23 and worm wheel 24 are self-locking. That is, worm 23 can drive worm wheel 24 to rotate, but worm wheel 24 cannot drive worm 23 to rotate. When servo motor 22 is not actively working, shaft 14 will automatically lock. First, lock rod 16 is rotated to a position away from lock groove 17, so that the car body hooking point enters hook 11. Then, servo motor 22 drives lock rod 16 to reverse and enter lock groove 17. Servo motor 22 brakes, and shaft 14 automatically locks, thereby preventing lock rod 16 from separating from lock groove 17, avoiding hooking incidents, and improving safety.

[0034] Example 3

[0035] The lubrication assembly includes a storage tank 31, a spray pipe 32, and a pump body 33. The storage tank 31 is fixed to the inner wall of the hook arm 1. An addition pipe 34 is fixed to the storage tank 31. A cover 35 is threaded to the head of the addition pipe 34. The spray pipe 32 passes through the connecting frame 12 and is fixedly connected to the connecting frame 12. A nozzle 36 is fixed to the right end of the spray pipe 32. The pump body 33 is fixed between the storage tank 31 and the connecting frame 12. The inlet and outlet of the pump body 33 are connected to the storage tank 31 and the spray pipe 32 through pipes, respectively.

[0036] Preferably, a pair of spray pipes 32 are symmetrically arranged at the front and rear, and the left ends of the two spray pipes 32 are fixedly connected to a connecting pipe 37, and the middle part of the connecting pipe 37 is connected to the pipe at the outlet of the pump body 33.

[0037] In this embodiment, the difference from Embodiment 2 is that the technical features of the lubrication component are disclosed, such as... Figure 1 and Figure 2 As shown, lubricating oil is added to the storage tank 31 through the adding pipe 34, and then the cover 35 is closed. When the pump body 33 is working, it draws out the lubricating oil and delivers it to the two spray pipes 32 and the nozzle 36 through the connecting pipe 37. The lubricating oil is sprayed onto the inner wall of the hook 11, thereby reducing the friction between the hook 11 and the vehicle body and thus reducing noise.

[0038] Example 4

[0039] A battery 41 and a PLC controller 42 are fixedly connected to the outer wall of the connecting frame 12. The power interface of the PLC controller 42 is electrically connected to the battery 41. The signal input terminal of the PLC controller 42 is electrically connected to a wireless receiver 43. It also includes a wireless transmitter 44 used in conjunction with the wireless receiver 43. The control output terminal of the PLC controller 42 is electrically connected to a pump body 33 and a forward / reverse control module 45. The forward / reverse control module 45 is electrically connected to a servo motor 22.

[0040] In this embodiment, the circuit connection structure between the pump body 33 and the servo motor 22 is further disclosed, such as... Figure 5 As shown, the battery 41 supplies power to the pump body 33 and the servo motor 22 through the PLC controller 42, and transmits control commands through the wireless transmitter 44. The control commands include the start and stop commands of the pump body 33, and the forward and reverse rotation and stop commands of the servo motor 22.

[0041] This controls the operation or braking of the pump body 33, as well as the forward and reverse rotation or braking of the servo motor 22.

[0042] The battery 41 in this application is charged by external mains power. The charging circuit of the battery 41 is a common existing technology and will not be described in detail here.

[0043] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. A hook arm hook structure for a hook arm truck, comprising a hook arm, wherein a semi-circular hook is fixedly connected to the right end of the hook arm, characterized in that: A connecting frame is fixed to the inner side of the hook arm near the hook. A semi-circular cavity is integrally formed on the right side of the connecting frame. A rotating shaft is rotatably connected to the center of the cavity. Support plates are fixed to both ends of the rotating shaft. A locking rod is fixed between the heads of the support plates. A locking groove is opened on the head of the hook corresponding to the position of the locking rod. The hook arm hook structure of the hook arm truck also includes a locking assembly and a lubrication assembly; the locking assembly is used to drive the rotating shaft to rotate and automatically lock it after the rotating shaft is in place, and the lubrication assembly is used to spray lubricating oil onto the inner wall of the hook.

2. The hook arm hook structure of a hook arm truck according to claim 1, characterized in that, The locking assembly includes a shaft and a servo motor. The shaft is rotatably connected to the connecting frame, and a worm gear is fixedly connected to the shaft. A worm wheel that meshes with the worm gear is fixedly connected to the rotating shaft. A mounting plate is fixedly connected inside the connecting frame. The servo motor is fixedly connected to the mounting plate. A first gear is fixedly connected to the output shaft of the servo motor, and a second gear that meshes with the first gear is fixedly connected to the rotating shaft.

3. The hook hook structure of a hooklift truck according to claim 2, characterized in that, The lead angle of the worm is less than the equivalent friction angle between the worm wheel and the meshing teeth of the worm.

4. The hook hook structure of a hooklift truck according to claim 2, characterized in that, The lubrication assembly includes a storage tank, a spray pipe, and a pump body. The storage tank is fixed to the inner wall of the hook arm, and an addition pipe is fixed to the storage tank. A cap is threaded to the head of the addition pipe. The spray pipe passes through the connecting frame and is fixedly connected to the connecting frame. A nozzle is fixed to the right end of the spray pipe. The pump body is fixed between the storage tank and the connecting frame. The inlet and outlet of the pump body are connected to the storage tank and the spray pipe, respectively, through pipes.

5. The hook hook structure of a hooklift truck according to claim 4, characterized in that, The spraying pipes are arranged symmetrically at the front and back, and the left ends of the two spraying pipes are fixedly connected to a connecting pipe. The middle part of the connecting pipe is connected to the pipe at the pump outlet.

6. The hook hook structure of a hooklift truck according to claim 4, characterized in that, A battery and a PLC controller are fixed to the outer wall of the connecting frame. The power interface of the PLC controller is electrically connected to the battery. The signal input terminal of the PLC controller is electrically connected to a wireless receiver. The PLC controller also includes a wireless transmitter used in conjunction with the wireless receiver. The control output terminal of the PLC controller is electrically connected to a pump body and a forward / reverse control module. The forward / reverse control module is electrically connected to a servo motor.

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