An automatic locking mechanism for horizontal outriggers of a truck-mounted crane

Abstract

This utility model provides an automatic locking mechanism for horizontal outriggers of truck-mounted cranes, belonging to the field of engineering machinery technology. It solves the technical problem in existing technologies where locking the horizontal outriggers of truck-mounted cranes requires manual operation, and the lock hook is easily forgotten, leading to structural damage. The technical solution is as follows: an automatic mechanical locking mechanism for horizontal outriggers includes a base mounted on the vehicle body and a fixing plate mounted on the horizontal outriggers; a base plate is fixedly installed on the base body, and a fixing block, a fixing pin, and a limiting plate are sequentially fixed on the base plate from top to bottom; a spring baffle is installed on the side of the fixing block near the fixing plate; a stop block is rotatably installed on the fixing pin; and a locking hook is installed on the fixing plate via locking bolts. The beneficial effects of this utility model are: during the extension or retraction of the horizontal outriggers, this locking mechanism automatically locks or opens, which helps improve work efficiency and avoids structural damage caused by misoperation.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, and in particular to an automatic locking mechanism for horizontal outriggers of a truck-mounted crane. Background Technology

[0002] Truck-mounted cranes are widely used for hoisting and transporting infrastructure materials and other equipment in municipal construction, coal mining, landscaping, and other industries. Truck-mounted cranes can be operated from either side, rotate 360 ​​degrees in both directions, or rotate in all directions.

[0003] The mechanical locking mechanism for the horizontal outriggers of a truck-mounted crane is a key safety device used to fix the horizontal outriggers. It is used to prevent the horizontal outriggers from extending out of the vehicle body during bumpy rides due to hydraulic system failure or malfunction, thus preventing them from scraping against other vehicles or objects. Therefore, the mechanical locking mechanism for the horizontal outriggers ensures the stability of the outriggers and prevents them from accidentally extending out of the vehicle while it is in motion.

[0004] The horizontal outriggers of truck-mounted cranes are locked in various ways, including fully manual locking and semi-automatic locking, as shown in the figure. Figure 4 and Figure 5 As shown, both locking methods require fully or partially manual operation, which is relatively cumbersome. In particular, there is a risk of structural damage if the locking hook is forgotten or if misoperation occurs. Utility Model Content

[0005] The purpose of this invention is to overcome the problems in the prior art and provide an automatic locking mechanism for the horizontal outriggers of a truck-mounted crane that can automatically lock or open without manual operation. This locking mechanism limits the opening and locking of the locking hook by adjusting the preload of the spring baffle and controls the magnitude of the locking force by adjusting the preload of the spring baffle. The intermediate process does not require manual operation, which is not only convenient and efficient, but also completely avoids misoperation.

[0006] To achieve the above-mentioned utility model objectives, the present utility model adopts the following technical solution: an automatic mechanical locking mechanism for horizontal outriggers, comprising a base body installed on the vehicle body and a fixing plate installed on the horizontal outriggers;

[0007] A base plate is fixedly installed on the base body. A fixing block, a fixing pin, and a limiting plate are fixedly installed on the base plate from top to bottom. A spring baffle is installed on the side of the fixing block near the fixing plate. A stop block is rotatably installed on the fixing pin. The top surface of the stop block near the fixing plate abuts against the bottom surface of the spring baffle.

[0008] The fixed plate is equipped with a locking hook by bolts. During the retraction of the horizontal outrigger, the locking hook and the stop block can be automatically locked. During the extension of the horizontal outrigger, the locking hook and the stop block can be automatically separated.

[0009] Furthermore, one end of the stop block has a U-shaped structure, and the other end is provided with a pin hole. The fixing pin is installed in the pin hole, and the stop block can rotate around the fixing pin.

[0010] The U-shaped structure of the stop block is equipped with a limiting pin, and the upper side of the locking hook is provided with a groove. During the retraction or extension of the horizontal support leg, the limiting pin can enter or disengage from the groove. The front end of the locking hook is provided with a guide slope, and the limiting pin can slide along the slope to enter or leave the groove. When the horizontal support leg retracts, the locking hook first collides with the limiting pin, and then the limiting pin slides along the upper slope of the locking hook. The locking hook pushes the stop block to rotate upward around the fixed pin shaft through the limiting pin. The stop block rotates upward and compresses and pre-tightens the spring baffle. As the horizontal support leg retracts, the limiting pin enters the groove, the pressure of the spring baffle is released, and the locking of the horizontal support leg is completed.

[0011] Furthermore, a retaining ring is installed on the fixed pin, which is used to limit the axial displacement of the stop block.

[0012] Furthermore, the lower end of the stop block is provided with an arc-shaped protrusion, and the limiting plate abuts against the arc-shaped protrusion. The limiting plate and the arc-shaped protrusion cooperate to enable the end of the stop block with the limiting pin to generate an upward swinging force, so that the front end of the stop block abuts against the spring baffle.

[0013] Furthermore, the fixing plate is welded to the horizontal support leg, and multiple locking bolts are arranged longitudinally on the fixing plate. The height of the locking hook can be adjusted by installing the locking hook on different locking bolts, and the assembly and disassembly are also convenient.

[0014] Furthermore, the fixing block and the spring baffle are connected by bolts. This connection method allows for fine adjustment of the height of the spring baffle, making the locking mechanism more smoothly and precisely connected, and more reliable and convenient to use.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: In this utility model, when the outrigger retracts, the locking hook drives the stop block to rotate upward. The upward rotation of the stop block generates pre-pressure on the spring baffle. Then, the limiting pin enters the groove, and the spring baffle releases the pressure, thus locking the outrigger. Similarly, when the outrigger extends, the locking hook drives the stop block to rotate upward. The upward rotation of the stop block generates pre-pressure on the spring baffle. When the limiting pin disengages from the groove, the spring baffle releases the pressure, thus unlocking the outrigger. Therefore, this mechanical locking mechanism automatically locks or unlocks the outrigger throughout the process of extending or retracting the horizontal outrigger, without the need for manual operation. This improves work efficiency and avoids the risk of structural damage caused by forgetting to open the locking hook or by misoperation. Attached Figure Description

[0016] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a partial structural diagram of the present utility model.

[0019] Figure 3 This is a schematic diagram of the structure of the stop block in this utility model.

[0020] Figure 4 This is a schematic diagram of a mechanical lock structure that is completely manually locked in the prior art.

[0021] Figure 5 This is a schematic diagram of a semi-automatic locking mechanical lock structure in the prior art.

[0022] The attached figures are labeled as follows: 1. Vehicle body; 2. Base body; 3. Horizontal support leg; 4. Fixing plate; 5. Base plate; 6. Fixing block; 7. Fixing pin; 8. Limiting plate; 9. Spring baffle; 10. Stop block; 11. Locking hook; 12. Limiting pin; 13. Groove; 14. Arc-shaped protrusion; 15. Locking bolt. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Of course, the specific embodiments described herein are only for explaining this utility model and are not intended to limit it.

[0024] Example: Figures 1-3 As shown, this embodiment provides an automatic mechanical locking mechanism for a horizontal outrigger, including a base 2 mounted on the vehicle body 1 and a fixing plate 4 mounted on the horizontal outrigger 3;

[0025] A base plate 5 is fixedly installed on the base body 2. A fixing block 6, a fixing pin 7 and a limiting plate 8 are fixedly installed on the base plate 5 from top to bottom. A spring baffle 9 is installed on the side of the fixing block 6 near the fixing plate 4. A stop block 10 is rotatably installed on the fixing pin 7. The top surface of the stop block 10 near the fixing plate 4 abuts against the bottom surface of the spring baffle 9.

[0026] A locking hook 11 is bolted to the fixing plate 4. A groove 13 is provided on the upper side of the locking hook 11. During the retraction or extension of the horizontal support leg 3, the limiting pin 12 can enter or disengage from the groove 13. The front end of the locking hook 11 is provided with a guide slope. The limiting pin 12 can slide along the slope to enter or leave the groove 13. During the retraction of the horizontal support leg 3, the locking hook 11 and the stop block 10 can automatically lock together. During the extension of the horizontal support leg 3, the locking hook 11 and the stop block 10 can automatically separate.

[0027] One end of the stop block 10 has a U-shaped structure, in which a limiting pin 12 is installed. The other end of the stop block 10 has a pin hole, in which a fixing pin 7 is installed. The stop block 10 can swing around the fixing pin 7. A retaining ring is installed on the fixing pin 7 to limit the axial displacement of the stop block 10. When the horizontal support leg 3 retracts, the locking hook 11 first comes into contact with the limiting pin 12. Then the limiting pin 12 slides along the upper inclined surface of the locking hook 11. The locking hook 11 pushes the stop block 10 to rotate upward around the fixing pin 7 through the limiting pin 12. The stop block 10 rotates upward and compresses and pre-tightens the spring baffle 9. As the horizontal support leg 3 retracts, the limiting pin 12 enters the groove 13, the pressure of the spring baffle 9 is released, and the locking of the horizontal support leg 3 is completed.

[0028] The lower end of the stop block 10 is provided with an arc-shaped protrusion 14. The limiting plate 8 abuts against the arc-shaped protrusion 14. The limiting plate 8 and the arc-shaped protrusion 14 cooperate to enable the stop block 10 to generate an upward swinging force with one end of the limiting pin 12, so that the front end of the stop block 10 abuts against the spring baffle 9.

[0029] The fixing plate 4 is welded to the horizontal support leg 3. Multiple locking bolts 15 are longitudinally arranged on the fixing plate 4. The height of the locking hook 11 can be adjusted by installing the locking hook 11 on different locking bolts 15. It is also convenient to disassemble and assemble. The fixing block 6 is connected to the spring baffle 9 by bolts. This connection method can realize the fine adjustment of the height of the spring baffle 9, making the connection of this locking mechanism smoother and more precise, and more reliable and convenient to use.

[0030] In use, when the horizontal support leg 3 retracts, the locking hook 11 moves toward the stop block 10 and comes into contact with the limiting pin 12. Then the limiting pin 12 slides along the upper inclined surface of the locking hook 11. The locking hook 11 pushes the stop block 10 to rotate upward around the fixed pin 7 through the limiting pin 12. The stop block 10 rotates upward and compresses and pre-tightens the spring baffle 9. Then the limiting pin 12 will enter the groove 13, and the pressure of the spring baffle 9 will be released, thus completing the locking of the horizontal support leg 3.

[0031] When the horizontal outrigger 3 extends, the limiting pin 12 slides along the inner inclined surface of the groove 13 on the locking hook 11. The locking hook 11 drives the stop block 10 to move upward. The stop block 10 rotates upward and compresses and pre-tightens the spring baffle 9. When the limiting pin 12 disengages from the groove 13, the pressure of the spring baffle 9 is released and the stop block 10 is reset, thus unlocking the horizontal outrigger 3.

[0032] Therefore, no human intervention is required during the entire locking or unlocking process, improving work efficiency and avoiding the risk of structural damage caused by forgetting to unlock, as is the case with existing technologies.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic locking mechanism for horizontal outriggers of a truck-mounted crane, characterized in that, Includes a base (2) mounted on the vehicle body (1) and a fixing plate (4) mounted on the horizontal outrigger (3); A base plate (5) is fixedly installed on the base body (2). A fixing block (6), a fixing pin (7) and a limiting plate (8) are fixedly installed on the base plate (5) from top to bottom. A spring baffle (9) is installed on the side of the fixing block (6) near the fixing plate (4). A stop block (10) is rotatably installed on the fixing pin (7). The top surface of the stop block (10) near the fixing plate (4) abuts against the bottom surface of the spring baffle (9). A locking hook (11) is installed on the fixed plate (4) by bolts. During the retraction of the horizontal support leg (3), the locking hook (11) and the stop block (10) can be automatically locked. During the extension of the horizontal support leg (3), the locking hook (11) and the stop block (10) can be automatically separated.

2. The automatic locking mechanism for horizontal outriggers of a truck-mounted crane according to claim 1, characterized in that, The stop block (10) has a U-shaped structure at one end and a pin hole at the other end. The fixed pin (7) is installed in the pin hole, and the stop block (10) can rotate around the fixed pin (7). The U-shaped structure of the stop block (10) is equipped with a limiting pin (12), and the upper side of the locking hook (11) is provided with a groove (13). During the retraction or extension of the horizontal support leg (3), the limiting pin (12) can enter or leave the groove (13). The front end of the locking hook (11) is provided with a bevel for guidance.

3. The automatic locking mechanism for horizontal outriggers of a truck-mounted crane according to claim 2, characterized in that, A retaining ring is installed on the fixed pin (7), which is used to limit the axial displacement of the stop block (10).

4. The automatic locking mechanism for horizontal outriggers of a truck-mounted crane according to claim 3, characterized in that, The lower end of the stop block (10) is provided with an arc-shaped protrusion (14), and the limiting plate (8) abuts against the arc-shaped protrusion (14).

5. The automatic locking mechanism for horizontal outriggers of a truck-mounted crane according to claim 1, characterized in that, The fixing plate (4) is welded to the horizontal support leg (3), and multiple locking bolts (15) are longitudinally arranged on the fixing plate (4).

6. The automatic locking mechanism for horizontal outriggers of a truck-mounted crane according to claim 1, characterized in that, The fixing block (6) is connected to the spring baffle (9) by bolts.

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