Tipping cart locking structure and tilting cart

Abstract

The utility model relates to the field of trolleys, and discloses a tilting cart locking structure and a tilting cart, the tilting cart locking structure comprises a locking piece connected with a tipping bucket, a pedal rotationally connected with a frame and a spring bolt assembly connected with the pedal, and the spring bolt assembly is provided with a spring bolt body. The lock tongue body is connected with the pedal through a transmission piece, the locking piece is provided with a lock hole, and the end of the lock tongue body can be movably inserted into the lock hole to lock the tipping bucket and the frame. According to the tilting cart locking structure, the pedal is treaded in a labor-saving manner, the convenience is high, the unlocking operation is convenient and labor-saving, the tipping bucket locked by the tilting cart locking structure is stably connected with the frame, and the safety of the tilting cart is improved.

Description

Technical Field

[0001] This utility model relates to the field of handcarts, and in particular to a dump truck locking structure and a dump truck. Background Technology

[0002] Dump trucks, as a means of cargo transportation, are mainly used for loading, unloading, and transferring materials. During transportation, when encountering bumpy road sections, the dump truck will sway up and down. If not operated properly at this time, the dump truck may tip forward and overturn, causing a safety accident. To avoid such dangerous situations, a locking device is usually installed to lock the dump truck to the vehicle body. For example, Chinese patent CN201343052Y discloses a dump truck with a locking device on the frame to lock the tipping hopper to the frame. The locking device consists of a locking tongue installed on the frame, a spring installed on the locking tongue, and a pedal fixed to the locking tongue. However, the pedal of the above-mentioned locking device can only move horizontally in a straight line, which is difficult to step on and inconvenient to unlock. Utility Model Content

[0003] To solve the aforementioned technical problem of inconvenient unlocking operation, this utility model provides a dump truck locking structure and a dump truck, which is labor-saving and convenient to operate by stepping on the pedal, and the unlocking operation is convenient and labor-saving.

[0004] The specific technical solution of this utility model is as follows: a dump truck locking structure, the dump truck including a frame and a dump truck hinged to the frame, the locking structure including a locking member connected to the dump truck, a pedal rotatably connected to the frame, and a locking tongue assembly connected to the pedal, the locking tongue assembly having a locking tongue body, the locking tongue body being connected to the pedal via a transmission member, the locking member having a locking hole, and the end of the locking tongue body being movably inserted into the locking hole to lock the dump truck to the frame.

[0005] When unlocking the tipper and frame, the operator depresses the pedal, causing it to rotate and drive the transmission mechanism to produce a linear displacement. This transmission mechanism moves the latch body in a straight line, pulling the end of the latch body out of the lock hole, thus unlocking the device. When locking the tipper and frame, the latch body can be manually or mechanically pushed back into the lock hole. This design converts the rotational motion of the pedal into the linear motion of the latch body through the transmission mechanism. The pedal's movement path and direction match the force path and direction applied during depressing. Compared to a pedal that performs horizontal linear motion, the operator can drive the pedal with less force to unlock the tipper and frame. Furthermore, the pedal is connected to the latch body through the transmission mechanism, offering high installation flexibility. It can be installed in easily accessible locations, improving the convenience of pedal operation and making unlocking easier and less strenuous.

[0006] Preferably, the pedal has a connecting hole, one end of the transmission component is fixedly connected to the latch body, and the other end is provided with a connecting rod. The connecting rod is slidably connected to the connecting hole so that the transmission component and the latch body remain horizontal during the rotation of the pedal.

[0007] In the above technical solution, when the pedal rotates, the transmission component and the locking tongue body always remain horizontal, ensuring efficient force transmission and avoiding the formation of an angle between the transmission component and the locking tongue body that would cause force decomposition, making the unlocking operation easier. At the same time, it can reduce the shaking and offset of parts during the transmission process and enhance structural stability.

[0008] Preferably, the latch assembly also has an elastic element and a lock housing connected to the vehicle frame. The latch body and the elastic element are disposed within the lock housing. The latch body is at least partially enclosed by the lock housing. Under the pre-tightening action of the elastic element, the latch body maintains a tendency to insert into the lock hole.

[0009] In the above technical solution, an elastic element is set to realize the automatic reset of the locking tongue body. When the driving force disappears, the locking tongue body can be re-inserted into the lock hole under the action of the elastic element to lock the dump and the frame, improving the convenience of locking and engaging operations. At the same time, except for manual unlocking, the dump and the frame are always in a stable locked state, effectively eliminating the safety hazards caused by negligence in not re-locking the dump.

[0010] Preferably, the lock housing is provided with a guide portion to guide the movement of the bolt body.

[0011] In the above technical solution, a guide is provided to guide the movement of the latch body, so that the latch body can smoothly insert into and disengage from the keyhole.

[0012] Preferably, the latch body is provided with a connecting part, which extends out of the lock shell and connects to the transmission member. The elastic member is provided at the end of the lock shell away from the locking member. One end of the elastic member abuts against the inner wall of the lock shell, and the other end abuts against the end face of the connecting part away from the locking member.

[0013] In the above technical solution, the elastic element is located between the connecting part and the inner wall of the lock housing. The transmission part drives the connecting part to directly compress the elastic element. The elastic element rebounds and pushes the connecting part to reset the lock tongue body. The elastic element directly drives the lock tongue body, reducing delay and enabling the lock tongue body to reset quickly.

[0014] In the above technical solution, the elastic element is sleeved on the locking tongue body. The elastic element has multiple contact points with the locking tongue body, which can evenly apply force to the locking tongue body and drive the locking tongue body to stably reset along the accurate trajectory and direction.

[0015] Preferably, the elastic element is sleeved on the end of the latch body away from the locking element.

[0016] In the above technical solution, the elastic element is sleeved on the bolt body, and the elastic element guides the movement of the bolt body, so that the bolt body can be stably reset along the accurate trajectory and direction.

[0017] Preferably, the frame is provided with a pedal connecting support plate, the pedal is rotatably connected to the frame through the pedal connecting support plate, and the pedal connecting support plate is provided with a limiting member to limit the rotation angle of the pedal.

[0018] In the above technical solution, limiting the rotation angle of the pedal can ensure that the displacement of the locking tongue is kept within a reasonable and stable range during each operation, thereby improving the unlocking efficiency. At the same time, it avoids excessive friction and impact between parts and enhances structural stability.

[0019] Preferably, the limiting member is a limiting post, and the pedal is provided with a limiting groove. During the rotation of the pedal, the limiting post abuts against the limiting groove to limit the pedal from continuing to rotate.

[0020] In the above technical solution, the rotation angle of the pedal is limited by the cooperation of the limiting post and the limiting groove, the limiting effect is stable and reliable, and the structure is simple and compact.

[0021] Another specific technical solution of this utility model is: a dump truck, including a frame and a dump truck hinged to the frame, the frame being provided with a lifting mechanism for controlling the lifting and lowering of the dump truck, and also including the above-mentioned locking structure, the front end of the dump truck being hinged to the frame, and the rear end being locked to the frame through the locking structure.

[0022] When the locking mechanism is not unlocked, the dump bucket is locked and cannot tilt or tip. By installing a locking mechanism on the dump truck to lock the dump bucket and the frame, the tipping bucket is effectively prevented from tipping over without manual control, ensuring the stability of the tipping bucket and improving the safety of the dump truck.

[0023] Preferably, the vehicle frame is equipped with a lifting mechanism for controlling the raising and lowering of the tipper.

[0024] In the above technical solution, a lifting mechanism is set up so that after the tipper and the frame are unlocked, the tipper is raised and tilted at a certain angle for unloading, which improves the overall efficiency and convenience of unloading operations.

[0025] Compared with the prior art, the present invention has the following advantages:

[0026] (1) Easy and effortless unlocking operation: The rotational motion of the pedal is converted into the linear motion of the locking tongue body through the transmission component to control the unlocking of the tipper and the frame. The movement path and direction of the pedal are matched with the force path and direction during the pedaling process. Compared with the pedal that makes horizontal linear motion, the operator can drive the pedal to move with less force to unlock the tipper and the frame. The pedal is connected to the locking tongue body through the transmission component. The pedal is highly flexible in installation and can be installed in a place that is easy to step on, which improves the convenience of stepping on the pedal and makes the unlocking operation easy and effortless.

[0027] (2) Stable locking and high security: The locking tongue body is equipped with a reset mechanism. When the operator stops stepping on the pedal, the locking tongue body can be re-inserted into the lock hole under the action of the elastic element to lock the bucket and the frame. This ensures that the bucket and the frame are always in a stable locked state except for manual unlocking, effectively eliminating the safety hazards caused by negligence in not re-locking the bucket. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of one possible structure of the locking mechanism of this utility model;

[0029] Figure 2 This is a cross-sectional view of the locking tongue of this utility model;

[0030] Figure 3 This is a schematic diagram of the connection between the locking structure of this utility model and the dump truck;

[0031] Figure 4 This is a structural schematic diagram of the dump truck of this utility model;

[0032] Figure 5 This is a structural schematic diagram of the dump truck in the unloading state of this utility model.

[0033] The attached figures are labeled as follows: 100, locking structure; 110, latch assembly; 111, latch body; 112, lock housing; 113, connecting part; 114, through hole; 115, elastic element; 116, guide part; 120, locking element; 121, lock hole; 130, pedal; 131, rotating shaft; 132, connecting hole; 133, limiting groove; 140, transmission element; 141, connecting rod; 150, pedal connecting support; 151, limiting element; 200, frame; 210, trolley handle; 220, handbrake; 300, tipping bucket; 310, tipping bucket body; 320, tipping bucket frame; 330, tipping handle; 340, pin; 400, wheel. Detailed Implementation

[0034] The present invention will be further described below with reference to embodiments. Unless otherwise specified, all devices, connection structures, and methods involved in this invention are known in the art.

[0035] Example 1

[0036] Reference Figures 1 to 5 As shown, this utility model provides a dump truck locking structure. The dump truck includes a frame 200 and a dump 300. The dump 300 includes a dump body 310 and a dump frame 320 bolted to the dump body 310. The dump 300 is placed on the bottom frame of the frame 200. The dump frame 320 is connected to the bottom frame of the frame 200 by a pin 340. The dump 300 can be flipped around the pin 340. The locking structure 100 includes a locking member 120, a locking tongue assembly 110, a pedal 130, and a transmission member 140. The locking member 120 is bolted to the tipper frame 320. The locking member 120 has a locking hole 121 and is a locking plate structure. The pedal 130 is rotatably connected to the frame 200. The rotating shaft 131 is parallel to the pin 340. The locking tongue assembly 110 is connected to the pedal 130. The locking tongue assembly 110 includes a locking tongue body 111. The locking tongue body 111 is connected to the pedal 130 through the transmission member 140. The end of the locking tongue body 111 can be movably inserted into the locking hole 121 to lock the tipper 300 to the frame 200. The end of the locking tongue body 111 inserted into the locking hole 121 is a bevel.

[0037] In this embodiment, as follows: Figure 1 and Figure 3 As shown, a pull rod is used as a transmission component 140. One end of the transmission component 140 is fixedly connected to the latch body 111, and the other end is provided with a cylindrical connecting rod 141. The side of the pedal 130 is provided with an oblong connecting hole 132. The connecting hole 132 extends in the direction toward the rotation axis 131. The connecting rod 141 is slidably connected to the connecting hole 132 so that the transmission component 140 and the latch body 111 always remain horizontal during the rotation of the pedal 130, so that the rotational motion of the pedal 130 is converted into the linear motion of the latch body 111. The frame 200 is provided with a pedal connecting support plate 150. The pedal 130 is rotatably connected to the frame 200 through the pedal connecting support plate 150. A rotating shaft 131 passes through the pedal connecting support plate 150. The pedal connecting support plate 150 is provided with a limiting member 151. In this embodiment, the limiting member 151 is a limiting post. The pedal 130 is provided with a corresponding limiting groove 133. During the rotation of the pedal 130, the limiting post abuts against the limiting groove 133 to limit the rotation angle of the pedal 130. The pedal 130 is tilted, and the tilt angle between the pedal 130 and the horizontal ground is in the range of 30-60°. In this embodiment, the tilt angle is 45°.

[0038] In this embodiment, as follows: Figure 2As shown, the latch assembly 110 includes a lock housing 112, a latch body 111, and an elastic element 115. The lock housing 112 is bolted to the frame 200. Inside the lock housing 112, near the locking member 120, there is a guide portion 116 for guiding the movement of the latch body 111. The guide portion 116 is a sleeve structure, and the latch body 111 is partially inserted into the guide portion 116. At the end of the lock housing 112 away from the locking member 120, there is a waist-shaped translation hole. The latch body 111 is located inside the lock housing 112 and is partially enclosed by the lock housing 112. The latch body 111 has a connecting portion 113, which has a through-hole. Hole 114, connecting part 113 extends out of lock housing 112 through translation hole, transmission member 140 passes through through hole 114 and is bolted to connecting part 113. Connecting part 113 can move along translation hole under the drive of transmission member 140 so that the end of lock tongue body 111 can be inserted into or withdrawn from lock hole 121. Elastic member 115 is sleeved on the end of lock tongue body 111 away from locking member 120. One end of elastic member 115 abuts against the inner wall of lock housing 112, and the other end abuts against the end face of connecting part 113 away from locking member 120. Lock tongue body 111 maintains the tendency to be inserted into lock hole 121 under the pre-tightening action of elastic member 115. When the latch assembly 110 is not under force, the latch body 111, under the pre-tightening action of the elastic element 115, has its end inserted into the lock hole 121. When unlocking, the pedal 130 is pressed, and the transmission element 140 pushes the connecting part 113 along the translation hole away from the locking element 120. The connecting part 113 drives the latch body 111 to move, the elastic element 115 compresses and deforms, and the end of the latch body 111 is pulled out of the lock hole 121. After the driving force disappears, the latch body 111 resets under the action of the elastic element 115 and re-inserts into the lock hole 121. In this embodiment, the elastic element used is a spring; however, other elastic structures with elastic deformation commonly used in the art, such as elastic coils, can also be used.

[0039] In this embodiment, the unlocking and locking method of the tipping bucket 300 and the frame 200 is as follows: The operator steps on the pedal 130, the pedal 130 rotates, driving the transmission component 140 to produce a linear displacement, the transmission component 140 drives the locking tongue body 111 to move in a linear direction, so that the end of the locking tongue body 111 is pulled out from the lock hole 121, thus unlocking the tipping bucket 300 and the frame 200. The operator releases the pedal 130, the locking tongue body 111 is reset under the action of the elastic component 115, and re-inserted into the lock hole 121, so that the tipping bucket 300 and the frame 200 are re-locked. During this process, the locking tongue body 111 pushes the pedal 130 to reset through the transmission component 140.

[0040] This locking structure converts the rotational motion of the pedal 130 into the linear motion of the locking tongue body 111 via the transmission component 140, thereby controlling the unlocking of the tipping bucket 300 from the frame 200. The movement path and direction of the pedal 130 match the force path and direction during pedaling. Compared to a pedal 130 that performs horizontal linear motion, the operator can drive the pedal 130 with less force to unlock the tipping bucket 300 from the frame 200. Furthermore, the pedal 130 is connected to the locking tongue body 111 via the transmission component 140, offering high installation flexibility. It can be installed in easily accessible locations, improving the convenience of pedaling and making unlocking easier and less strenuous. The transmission component 140 is hinged at one end to the locking tongue body 111 and fixedly connected to the pedal 130 at the other end, effectively converting the rotational motion of the pedal 130 into the linear motion of the locking tongue body 111. This design is simple, easy to manufacture, and suitable for industrial production.

[0041] This locking structure incorporates an elastic element 115 to automatically reset the latch body 111. This allows the latch body 111 to re-insert into the lock hole 121 under the action of the elastic element 115 after the driving force disappears, locking the tipper 300 to the frame 200. This improves the convenience of locking operations and ensures that, except for manual unlocking, the tipper 300 and frame 200 remain in a stable locked state, effectively eliminating safety hazards caused by negligence in failing to re-lock the tipper 300. The guide part 116 guides the movement of the latch body, allowing it to smoothly insert and disengage from the lock hole. The elastic element 115, sleeved on the latch body 111, has multiple contact points with the latch body 111, enabling even force application and stable reset of the latch body 111 along a precise trajectory and direction, further improving the efficiency of tipper locking and unlocking.

[0042] When the pedal 130 rotates, the transmission component 140 and the locking tongue body 111 remain horizontal, ensuring efficient force transmission and preventing force decomposition due to an angle between them. This makes unlocking easier and reduces the swaying and offset of parts during transmission, enhancing structural stability. Limiting the rotation angle of the pedal 130 ensures that the displacement of the locking tongue assembly 110 remains within a reasonable and stable range during each operation, improving unlocking efficiency. It also prevents excessive friction and impact between parts, further enhancing structural stability. The inclined design of the pedal 130 facilitates the operator's application of force and makes it easier to rotate, improving the convenience of unlocking operations.

[0043] Example 2

[0044] Reference Figures 1 to 5As shown, this utility model provides a tipper truck, including a frame 200 with a push handle 210, a tipper 300 with a tipping handle 330, wheels 400 detachably connected to the frame 200, and a locking structure 100 as described in Embodiment 1 above. A handbrake 220 is connected to the push handle 210. The frame 200 is provided with a lifting mechanism for controlling the lifting of the tipper 300. The tipper 300 includes a tipper body 310 and a tipper frame 320 bolted to the tipper body 310. The tipper 300 is placed on the bottom frame of the frame 200. The front end of the tipper frame 320 is connected to the bottom frame of the frame 200 by a pin 3. The tipping bucket 300 is connected to the frame 200 via a 40-pin connection. The tipping bucket 300 can rotate around the pin 340. The locking member 120 is connected to the rear end of the tipping bucket 300 frame. The locking tongue assembly 110 and the pedal 130 are connected to the bottom frame of the frame 200. The locking tongue body 111 is connected to the pedal 130, which extends from the end of the bottom frame of the frame 200 near the trolley handle 210. The end of the locking tongue body 111 can be movably inserted into the lock hole 121. When the end of the locking tongue body 111 is inserted into the lock hole 121, the tipping bucket 300 is locked to the frame 200. When the end of the locking tongue body 111 is withdrawn from the lock hole 121, the tipping bucket 300 is unlocked from the frame 200. The lifting system in this embodiment uses a hydraulic system; however, it is understood that other lifting systems commonly used in the art, such as mechanical lifting devices, can also be used. Figure 5 In the middle, direction A is from back to front.

[0045] When the locking mechanism 100 is not unlocked, the tipper 300 is locked and cannot tilt or tip. Figure 5 As shown, when the dump truck is in the unloading state, the dump 300 needs to be unlocked. The unloading process is as follows: stepping on the pedal 130 drives the end of the locking tongue body 111 to disengage from the locking hole 121, and then the lifting mechanism is activated to raise the dump 300 and tilt it at a certain angle, allowing the goods to slide down and be dumped out under the action of gravity. By setting a locking structure 100 on the dump truck to lock the dump 300 and the frame 200, the dump 300 is effectively prevented from tipping over without manual control, ensuring the stability of the dump 300 and improving the safety of the dump truck.

[0046] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Any simple modifications, alterations, or equivalent structural transformations made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A locking structure for a dump truck, the dump truck comprising a frame (200) and a dump truck (300) hinged to the frame (200), characterized in that, The locking structure (100) includes a locking member (120) connected to the tipper (300), a pedal (130) rotatably connected to the frame (200), and a locking tongue assembly (110) connected to the pedal (130). The locking tongue assembly (110) has a locking tongue body (111), which is connected to the pedal (130) via a transmission member (140). The locking member (120) has a locking hole (121), and the end of the locking tongue body (111) can be movably inserted into the locking hole (121) to lock the tipper (300) to the frame (200).

2. The dump truck locking structure according to claim 1, characterized in that, The pedal (130) has a connecting hole (132). One end of the transmission component (140) is fixedly connected to the latch body (111), and the other end is provided with a connecting rod (141). The connecting rod (141) is slidably connected to the connecting hole (132) so that the transmission component (140) and the latch body (111) remain horizontal during the rotation of the pedal (130).

3. The dump truck locking structure according to claim 1, characterized in that, The latch assembly (110) also has an elastic element (115) and a lock housing (112) connected to the frame (200). The latch body (111) and the elastic element (115) are disposed inside the lock housing (112). The latch body (111) is at least partially enclosed by the lock housing (112). Under the pre-tightening action of the elastic element (115), the latch body (111) maintains a tendency to be inserted into the lock hole (121).

4. The dump truck locking structure according to claim 3, characterized in that, The lock housing (112) is provided with a guide part (116) for guiding the movement of the bolt body (111).

5. A dump truck locking structure according to claim 3, characterized in that, The latch body (111) is provided with a connecting part (113), which extends out of the lock shell (112) and connects to the transmission member (140). The elastic member (115) is located at the end of the lock shell (112) away from the locking member (120). One end of the elastic member (115) abuts against the inner wall of the lock shell (112), and the other end abuts against the end face of the connecting part (113) away from the locking member (120).

6. A dump truck locking structure according to claim 5, characterized in that, The elastic element (115) is sleeved on the end of the latch body (111) away from the locking element (120).

7. A dump truck locking structure according to any one of claims 1 to 6, characterized in that, The frame (200) is provided with a pedal connecting support plate (150), and the pedal (130) is rotatably connected to the frame (200) through the pedal connecting support plate (150). The pedal connecting support plate (150) is provided with a limiting member (151) to limit the rotation angle of the pedal (130).

8. A dump truck locking structure according to claim 7, characterized in that, The limiting member (151) is a limiting post, and the pedal (130) is provided with a limiting groove (133). During the rotation of the pedal (130), the limiting post abuts against the limiting groove (133) to limit the pedal (130) from continuing to rotate.

9. A tipper truck, comprising a frame (200) with a push handle (210), wheels (400) detachably connected to the frame (200), and a tipper (300) hinged to the frame (200), characterized in that, It also includes the locking structure (100) according to any one of claims 1 to 8, wherein the front end of the tipper (300) is hinged to the frame (200), and the rear end is locked to the frame (200) through the locking structure (100).

10. A dump truck according to claim 9, characterized in that, The frame (200) is provided with a lifting mechanism for controlling the lifting of the tipper (300).

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