Tightening device for chain ring of rear carriage door of dumper

Abstract

The utility model relates to a chain ring tightening device for a rear carriage door of a dumper. The chain ring tightening device is characterized by comprising a connecting square ring, a first rotary locking mechanism is arranged at one end of the connecting square ring; a first connecting chain ring is arranged at the end, away from the connecting square ring, of the first rotating locking mechanism. The chain ring of the rear carriage door of the dumper can be conveniently tensioned, operation is easy, and no collision risk exists during adjustment.

Description

Technical Field

[0001] The utility model relates to the technical field of carriages, and more particularly to a chain ring tightening device for a rear compartment door of a dump truck. Background Art

[0002] A dump truck, also known as a tipper, is a vehicle that unloads cargo using hydraulic or mechanical lifting. It consists of a chassis, hydraulic lifting mechanism, cargo compartment, and power take-off device. In civil engineering, dump trucks often operate in conjunction with excavators, loaders, belt conveyors, and other construction machinery, forming a loading, transporting, and unloading production line for earth, sand, gravel, and bulk materials.

[0003] The rear door of current dump trucks (eight-wheel trucks, four-wheel trucks and eight-wheel trucks, etc.) is opened and closed by an automatic chain link with an automatic lock hook. After long-term use, the chain link will stretch and lengthen, losing the tightness of the rear door hook. To ensure the tightness of the rear door of the cargo compartment, the chain tension must be adjusted regularly. Conventional vehicles have an adjustment device at the root of the chain link, which is tightened with a nut and screw and requires a wrench to adjust (such as Figure 1 This locking mechanism has the following drawbacks: 1. Because the adjustment screw has a fixed support, the nuts are locked on both the inner and outer sides of the screw, making it inconvenient and time-consuming to use tools for adjustment. 2. Because it is located close to the vehicle's rear tire, the screw adjustment area is prone to dirt and dust, and the nuts and screw are prone to rust, making adjustment more difficult and maintenance more challenging. 3. The adjustment area is located below the vehicle body, in a narrow space, making adjustment difficult and posing a risk of head injury. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a chain ring tightening device for a dump truck rear compartment door to solve the above technical problems.

[0005] The above technical purpose of the present utility model is achieved through the following technical solutions: a chain ring tightening device for the rear compartment door of a dump truck, comprising: a connecting square ring; a first rotation locking mechanism is provided at one end of the connecting square ring; and a first connecting chain ring is provided at the end of the first rotation locking mechanism away from the connecting square ring.

[0006] Specifically, the dump truck's rear door chain is broken in the middle, and the first connecting link is connected to the dump truck's rear door chain at one end. The rear door chain at the other end is rotatably connected to the connecting square ring. To adjust the dump truck's rear door chain, the connecting square ring is rotated, causing the first rotating locking mechanism to move the first connecting link toward the connecting square ring, thereby tightening the dump truck's rear door chain and completing the adjustment. Because the connecting square ring has a large through-hole in the middle, the operator can use a hard, rod-like object to rotate the connecting square ring when tension needs to be adjusted, making the operation easier.

[0007] Optionally, the first rotation locking mechanism includes: a first nut; the first nut is fixed on the connecting square ring; a first mounting hole corresponding to the first nut is opened on the connecting square ring; a first bolt is threadedly connected to the first nut; and the first connecting chain link is arranged at the end of the first bolt.

[0008] When the connecting square ring rotates, the first nut rotates with the connecting square ring. At this time, the first bolt moves toward the inside of the connecting square ring under the action of the thread, so that the first connecting chain link is close to the connecting square ring, thereby completing the tightening of the chain link of the dump truck's rear compartment door.

[0009] Optionally, a first limiting block is further provided at the end of the first bolt.

[0010] By providing the first limiting block, the position of the first bolt can be limited to prevent the first bolt from being separated from the first nut.

[0011] Optionally, a first reinforcement block corresponding to the first nut is provided on the connecting square ring.

[0012] By providing the first reinforcement block, the bearing capacity of the connecting square ring on the first nut can be increased, thereby preventing the connection between the connecting square ring and the first nut from being deformed due to stress.

[0013] Optionally, a second rotation locking mechanism is further provided on the connecting square ring; and a second connecting chain link is provided at one end of the second rotation locking mechanism away from the connecting square ring.

[0014] To further enhance adjustability, a second rotational locking mechanism can be installed on the connecting square ring. This mechanism is symmetrical to the first, and when the connecting square ring is rotated, the second rotational locking mechanism can drive the second connecting link closer to the connecting square ring. The second connecting link is connected to the chain link of the dump truck's rear door. Therefore, when the connecting square ring is rotated, the first and second connecting links move simultaneously, improving adjustability.

[0015] Optionally, the second rotation locking mechanism includes: a second nut; the thread direction of the second nut is opposite to that of the first nut; the second nut is fixed on the connecting square ring; a second mounting hole corresponding to the second nut is opened on the connecting square ring; a second bolt is threadedly connected to the second nut; and the second connecting chain link is arranged at the end of the second bolt.

[0016] Because the second nut's thread direction is opposite to that of the first nut, the second bolt always moves toward or away from the first bolt. Therefore, when tightening the dump truck's rear door chain, rotating the connecting square ring moves the first and second bolts toward each other, driving the first and second connecting chain links toward each other, thereby tightening the dump truck's rear door chain.

[0017] Optionally, a second limiting block is further provided at the end of the second bolt.

[0018] By providing the second limiting block, the position of the second bolt can be limited to prevent the second bolt from being separated from the second nut.

[0019] Optionally, a second reinforcement block corresponding to the second nut is provided on the connecting square ring.

[0020] By providing the second reinforcement block, the bearing capacity of the connecting square ring on the second nut can be increased, thereby avoiding stress deformation at the connection point between the connecting square ring and the second nut.

[0021] In summary, the present invention has the following beneficial effects:

[0022] By rotating the connecting square ring, the first rotating locking mechanism drives the first connecting chain ring to move toward the connecting square ring, and the second rotating locking mechanism can drive the second connecting chain ring to move close to the connecting square ring, thereby tightening the chain ring of the dump truck's rear compartment door. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of the vehicle's built-in regulating device;

[0024] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 3 It is a structural schematic diagram of the utility model installed on a vehicle.

[0026] In the figure: 1. connecting square ring; 2. first rotation locking mechanism; 21. first nut; 22. first bolt; 3. first connecting chain link; 4. first limit block; 5. first reinforcement block; 6. second rotation locking mechanism; 61. second nut; 62. second bolt; 7. second connecting chain link; 8. second limit block; 9. second reinforcement block. DETAILED DESCRIPTION

[0027] To make the objectives, features, and advantages of the present invention more readily apparent, the following detailed description of the present invention is provided with reference to the accompanying drawings. The accompanying drawings illustrate several embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein.

[0028] In the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. The terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features.

[0029] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0030] Example 1

[0031] This embodiment provides a chain ring tightening device for the rear door of a dump truck, such as Figure 2 and Figure 3 As shown, it comprises: a connecting square ring 1; a first rotation locking mechanism 2 is provided at one end of the connecting square ring 1; and a first connecting chain link 3 is provided at the end of the first rotation locking mechanism 2 away from the connecting square ring 1.

[0032] Specifically, the dump truck's rear door chain is broken in the middle, and the first connecting link 3 is connected to the dump truck's rear door chain at one end. The dump truck's rear door chain at the other end is rotatably connected to the connecting square ring 1, which is located in the middle of the dump truck's rear door chain. When the dump truck's rear door chain needs to be adjusted, the connecting square ring 1 is rotated, causing the first rotating locking mechanism 2 to move the first connecting link 3 toward the connecting square ring 1, thereby tightening the dump truck's rear door chain and completing the adjustment. Because the connecting square ring 1 has a large through-hole in the middle, when the tension needs to be adjusted, the operator can use a hard rod-shaped object to rotate the connecting square ring 1, which facilitates operation.

[0033] Optionally, the first rotation locking mechanism 2 includes: a first nut 21; the first nut 21 is fixed on the connecting square ring 1; a first mounting hole corresponding to the first nut 21 is opened on the connecting square ring 1; a first bolt 22 is threadedly connected to the first nut 21; the first connecting chain link 3 is arranged at the end of the first bolt 22.

[0034] When the connecting square ring 1 rotates, the first nut 21 rotates with the connecting square ring 1. At this time, the first bolt 22 moves toward the inside of the connecting square ring 1 under the action of the thread, so that the first connecting chain link 3 is close to the connecting square ring 1, thereby completing the tightening of the chain link of the dump truck's rear compartment door.

[0035] Optionally, a first limiting block 4 is further provided at the end of the first bolt 22 .

[0036] By providing the first limiting block 4 , the position of the first bolt 22 can be limited to prevent the first bolt 22 from being separated from the first nut 21 .

[0037] Optionally, a first reinforcement block 5 corresponding to the first nut 21 is provided on the connecting square ring 1 .

[0038] By providing the first reinforcing block 5 , the bearing capacity of the connecting square ring 1 on the first nut 21 can be increased, thereby preventing the connection between the connecting square ring 1 and the first nut 21 from being deformed by force.

[0039] Example 2

[0040] This embodiment provides a chain ring tightening device for the rear door of a dump truck, such as Figure 2 and Figure 3 As shown, it comprises: a connecting square ring 1; a first rotation locking mechanism 2 is provided at one end of the connecting square ring 1; and a first connecting chain link 3 is provided at the end of the first rotation locking mechanism 2 away from the connecting square ring 1.

[0041] Specifically, the dump truck's rear door chain is broken in the middle, and the first connecting link 3 is connected to the dump truck's rear door chain at one end. The dump truck's rear door chain at the other end is rotatably connected to the connecting square ring 1, which is located in the middle of the dump truck's rear door chain. When the dump truck's rear door chain needs to be adjusted, the connecting square ring 1 is rotated, causing the first rotating locking mechanism 2 to move the first connecting link 3 toward the connecting square ring 1, thereby tightening the dump truck's rear door chain and completing the adjustment. Because the connecting square ring 1 has a large through-hole in the middle, when the tension needs to be adjusted, the operator can use a hard rod-shaped object to rotate the connecting square ring 1, which facilitates operation.

[0042] Optionally, the first rotation locking mechanism 2 includes: a first nut 21; the first nut 21 is fixed on the connecting square ring 1; a first mounting hole corresponding to the first nut 21 is opened on the connecting square ring 1; a first bolt 22 is threadedly connected to the first nut 21; the first connecting chain link 3 is arranged at the end of the first bolt 22.

[0043] When the connecting square ring 1 rotates, the first nut 21 rotates with the connecting square ring 1. At this time, the first bolt 22 moves toward the inside of the connecting square ring 1 under the action of the thread, so that the first connecting chain link 3 is close to the connecting square ring 1, thereby completing the tightening of the chain link of the dump truck's rear compartment door.

[0044] Optionally, a first limiting block 4 is further provided at the end of the first bolt 22 .

[0045] By providing the first limiting block 4 , the position of the first bolt 22 can be limited to prevent the first bolt 22 from being separated from the first nut 21 .

[0046] Optionally, a first reinforcement block 5 corresponding to the first nut 21 is provided on the connecting square ring 1 .

[0047] By providing the first reinforcing block 5 , the bearing capacity of the connecting square ring 1 on the first nut 21 can be increased, thereby preventing the connection between the connecting square ring 1 and the first nut 21 from being deformed by force.

[0048] Optionally, a second rotation locking mechanism 6 is further provided on the connecting square ring 1 ; a second connecting chain link 7 is provided at one end of the second rotation locking mechanism 6 away from the connecting square ring 1 .

[0049] To further enhance the adjustability, a second rotation locking mechanism 6 can be provided on the connecting square ring 1. The second rotation locking mechanism 6 is symmetrically arranged with the first rotation locking mechanism 2. When the connecting square ring 1 is rotated, the second rotation locking mechanism 6 can drive the second connecting link 7 to move closer to the connecting square ring 1. The second connecting link 7 is connected to the chain link of the dump truck's rear door. Therefore, when the connecting square ring 1 is rotated, the first connecting link 3 and the second connecting link 7 move simultaneously, improving the adjustment efficiency.

[0050] Optionally, the second rotation locking mechanism 6 includes: a second nut 61; the thread direction of the second nut 61 is opposite to the thread direction of the first nut 21; the second nut 61 is fixed on the connecting square ring 1; a second mounting hole corresponding to the second nut 61 is opened on the connecting square ring 1; a second bolt 62 is threadedly connected to the second nut 61; the second connecting chain link 7 is arranged at the end of the second bolt 62.

[0051] Because the thread direction of the second nut 61 is opposite to that of the first nut 21, the second bolt 62 always moves toward or away from the first bolt 22. Therefore, when tightening the dump truck's rear door chain, rotating the connecting square ring 1 causes the first bolt 22 and the second bolt 62 to move toward each other, driving the first connecting chain link 3 and the second connecting chain link 7 toward each other, thereby tightening the dump truck's rear door chain.

[0052] Optionally, a second limiting block 8 is further provided at the end of the second bolt 62 .

[0053] By providing the second limiting block 8 , the position of the second bolt 62 can be limited to prevent the second bolt 62 from being separated from the second nut 61 .

[0054] Optionally, a second reinforcement block 9 corresponding to the second nut 61 is provided on the connecting square ring 1 .

[0055] By providing the second reinforcing block 9 , the bearing capacity of the connecting square ring 1 on the second nut 61 can be increased, thereby preventing the connection between the connecting square ring 1 and the second nut 61 from being deformed by force.

[0056] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A chain ring tightening device for a dump truck rear door, characterized in that: include: Connecting square rings; A first rotation locking mechanism is provided at one end of the connecting square ring; and a first connecting chain link is provided at an end of the first rotation locking mechanism away from the connecting square ring.

2. A dump truck rear door chain ring tightening device according to claim 1, characterized in that: The first rotation locking mechanism includes: a first nut; the first nut is fixed on the connecting square ring; a first mounting hole corresponding to the first nut is opened on the connecting square ring; a first bolt is threadedly connected to the first nut; and the first connecting chain link is arranged at the end of the first bolt.

3. A dump truck rear door chain ring tightening device according to claim 2, characterized in that: A first limiting block is also provided at the end of the first bolt.

4. A chain ring tightening device for a dump truck rear door according to claim 3, characterized in that: The connecting square ring is provided with a first reinforcement block corresponding to the first nut.

5. The chain ring tightening device for the rear door of a dump truck according to claim 2, characterized in that: The connecting square ring is also provided with a second rotation locking mechanism; and a second connecting chain ring is provided at one end of the second rotation locking mechanism away from the connecting square ring.

6. A dump truck rear door chain ring tightening device according to claim 5, characterized in that: The second rotation locking mechanism includes: a second nut; the thread direction of the second nut is opposite to that of the first nut; the second nut is fixed on the connecting square ring; a second mounting hole corresponding to the second nut is opened on the connecting square ring; a second bolt is threadedly connected to the second nut; and the second connecting chain link is arranged at the end of the second bolt.

7. A dump truck rear door chain ring tightening device according to claim 6, characterized in that: A second limiting block is also provided at the end of the second bolt.

8. The chain ring tightening device for the rear door of a dump truck according to claim 6, characterized in that: The connecting square ring is provided with a second reinforcement block corresponding to the second nut.

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