Automatic overturning landing leg mechanism for truck-mounted crane

Abstract

The utility model discloses an automatic turnover landing leg mechanism for a truck-mounted crane, and particularly relates to the technical field of truck-mounted cranes, which comprises a main beam serving as a carrier of the whole device, supporting columns are arranged on two sides of the main beam, first electric push rods are fixedly mounted on the supporting columns, and first positioning discs are fixedly connected to output ends of the first electric push rods. The main beam is provided with a transmission assembly used for turning over the supporting columns, the transmission assembly comprises load bearing plates fixedly connected to the two sides of the main beam, the main beam is further rotationally provided with a transmission shaft, the two ends of the transmission shaft are both fixedly connected with transmission discs, the supporting columns are fixedly connected to the corresponding transmission discs, and the transmission discs are provided with positioning pieces used for fixing the transmission discs. Through the arrangement of the transmission assembly, unnecessary movement of the supporting column due to vibration or accidental strength in the operation process can be effectively prevented, it is ensured that the supporting column is always in a stable state in the hoisting operation process, auxiliary positioning can be conducted on the transmission disc, the load of a motor is reduced, and the hoisting efficiency is improved. And the service lives of the motor and a transmission part thereof are prolonged.

Description

Technical Field

[0001] This utility model relates to the field of truck-mounted crane technology, and more specifically, to an automatic tilting outrigger mechanism for truck-mounted cranes. Background Technology

[0002] A truck-mounted crane (also known as a truck-mounted hoist) is a special lifting equipment widely used in construction, logistics, and transportation. It is characterized by high flexibility, ease of operation, and convenient transportation. Typically mounted on a heavy-duty truck, it can move and operate under various working conditions, adapting to diverse construction environments and work requirements.

[0003] Traditional truck-mounted crane outrigger mechanisms rely on motors to flip the support column. If the motor's operation is not balanced or stable during the flipping or operation, the outriggers may not lock completely after the action is completed, leading to swaying. Especially in lifting operations, even the slightest sway can have serious consequences. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides an automatic tilting outrigger mechanism for truck-mounted cranes, which aims to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic tilting outrigger mechanism for a truck-mounted crane, comprising a main beam serving as the carrier of the entire device, with supports on both sides of the main beam, an electric push rod fixedly mounted on each support, and a positioning disc fixedly connected to the output end of the electric push rod. The main beam is provided with a transmission assembly for tilting the support, the transmission assembly including load-bearing plates fixedly connected to both sides of the main beam, and a transmission shaft rotatably mounted on the main beam, with transmission discs fixedly connected to both ends of the transmission shaft. The support is fixedly connected to the corresponding transmission disc, and the transmission disc is provided with a positioning element for fixing it.

[0006] Furthermore, the positioning component includes four positioning slots formed in the load-bearing plate, the four positioning slots being arranged in a ring, connecting sleeves being fixedly connected to both sides of the transmission disc, a connecting plate being slidably connected inside the connecting sleeve, a spring being fixedly connected between the connecting plate and the inner wall of the connecting sleeve, an L-shaped rod being slidably connected to the middle of the connecting sleeve, the L-shaped rod being rotatably connected to the connecting plate, and a positioning plate corresponding to the adjacent positioning slot being fixedly connected to the end of the L-shaped rod.

[0007] Furthermore, an annular groove is provided inside the connecting plate, and a slider that is slidably connected to the annular groove is fixed on the L-shaped rod.

[0008] Furthermore, the transmission disc has multiple markings to guide the rotation direction of the L-shaped rod.

[0009] Furthermore, the support column is provided with an auxiliary component, which includes a load-bearing ring fitted on the support column, a bracket rotatably mounted on the load-bearing ring, an electric push rod II fixedly mounted on the bracket, a positioning plate II fixedly connected to the output end of the electric push rod II, and the bracket is mounted on the load-bearing ring by bolts.

[0010] Furthermore, a motor is fixedly mounted on the main beam, and bevel gears for meshing transmission are fitted on the output end of the motor and the transmission shaft.

[0011] It can be seen that the above technical solution is designed to facilitate the rotation of the drive shaft.

[0012] Furthermore, the motor has a built-in electromagnetic locking structure.

[0013] It can be seen that the above technical solution is designed to facilitate the limiting of the drive shaft.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] 1. By setting up a transmission component, this utility model can effectively prevent the support column from moving unnecessarily during operation due to vibration or unexpected force, ensuring that the support column remains stable during hoisting operations.

[0016] 2. When the support column needs to be reset, the positioning plate is inserted into the positioning groove, which can assist in positioning the transmission plate, reduce the load on the motor, and help improve the service life of the motor and its transmission components. Attached Figure Description

[0017] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention viewed from the front.

[0019] Figure 2 This is a schematic diagram of the transmission component of this utility model;

[0020] Figure 3 This is a schematic diagram of the external connection structure of the support column of this utility model;

[0021] Figure 4 This utility model Figure 3 Enlarged view of point A.

[0022] Figure label:

[0023] 100. Main beam; 101. Support column; 102. Electric push rod 1; 103. Positioning plate 1;

[0024] 200. Transmission assembly; 201. Motor; 202. Drive shaft; 203. Bevel gear; 204. Load plate; 205. Transmission disc; 206. Connecting sleeve; 207. L-shaped rod; 208. Positioning plate; 209. Positioning groove; 210. Mark; 211. Connecting disc; 212. Spring; 213. Slider; 214. Annular groove;

[0025] 300. Auxiliary components; 301. Load-bearing ring; 302. Bracket; 303. Electric push rod II; 304. Positioning plate II. Detailed Implementation

[0026] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] Refer to the instruction manual appendix Figure 1-4 An automatic tilting outrigger mechanism for a truck-mounted crane according to this embodiment includes a main beam 100 serving as the carrier of the entire device. Support columns 101 are provided on both sides of the main beam 100. An electric push rod 102 is fixedly mounted on the support column 101. A positioning plate 103 is fixedly connected to the output end of the electric push rod 102. When the electric push rod 102 is activated, the positioning plate 103 moves downward to stabilize the truck-mounted crane. A transmission assembly 200 for tilting the support column 101 is provided on the main beam 100. After the support column 101 is retracted, collisions or accidents caused by the exposed support column 101 are avoided, reducing the risk of accidents to pedestrians or other vehicles.

[0028] During hoisting operations, external forces (such as wind, ground vibration, uneven load distribution, etc.) on the truck crane can exert unstable forces on the support column 101, especially in the absence of a positioning device. This can cause the support column 101 to sway after being overturned. To solve the above problems, the transmission assembly 200 includes load-bearing plates 204 fixed to both sides of the main beam 100. A drive shaft 202 is also rotatably mounted on the main beam 100. Both ends of the drive shaft 202 are fixed to drive discs 205. The support column 101 is fixed to the corresponding drive disc 205. The drive disc 205 is provided with positioning parts for fixing it. When the support column 101 needs to be lowered or retracted, the positioning parts can fix the drive disc 205, thereby improving the stability of the support column 101.

[0029] Specifically, the positioning components include four positioning slots 209 formed in the load-bearing plate 204, arranged in a ring. Connecting sleeves 206 are fixedly connected to both sides of the transmission disc 205. A connecting plate 211 is slidably connected inside the connecting sleeve 206. A spring 212 is fixedly connected between the connecting plate 211 and the inner wall of the connecting sleeve 206. An L-shaped rod 207 is slidably connected to the middle of the connecting sleeve 206, and the L-shaped rod 207 is rotatably connected to the connecting plate 211. A positioning plate 208 corresponding to the nearest positioning slot 209 is fixedly connected to the end of the L-shaped rod 207. When the position of the support column 101 needs to be changed, first pull... Move the L-shaped rod 207 outwards, and the positioning plate 208 moves with the L-shaped rod 207 to disengage from the positioning groove 209. Then rotate the L-shaped rod 207 ninety degrees and release it. The drive shaft 202 rotates, driving the drive disc 205 to rotate, and the support column 101 on the drive disc 205 can be lowered. When the support column 101 needs to be flipped and retracted, the same operation can be performed. This can effectively prevent the support column 101 from moving unnecessarily due to vibration or accidental force during operation, and ensure that the support column 101 is always in a stable state during the hoisting operation.

[0030] Furthermore, an annular groove 214 is provided inside the connecting plate 211, and a slider 213 is fixedly connected to the L-shaped rod 207 and slidably connected to the annular groove 214. The slider 213 can slide in the annular groove 214, ensuring that the L-shaped rod 207 can rotate itself while driving the connecting plate 211 to move, so that the positioning plate moves and rotates with the L-shaped rod 207. This can effectively prevent accidental loosening in emergency situations, thereby reducing the safety hazards caused by detachment or the support column 101 falling off.

[0031] Multiple markings 210 are provided on the transmission disc 205 to guide the rotation direction of the L-shaped rod 207, ensuring that the operator can rotate the L-shaped rod 207 to the corresponding position.

[0032] A motor 201 is fixedly mounted on the main beam 100. A bevel gear 203 for meshing transmission is fitted on the output end of the motor 201 and the transmission shaft 202. When the motor 201 is started, it drives the output shaft to rotate. The output shaft drives the transmission shaft 202 to rotate through the bevel gear 203. The transmission disc 205 rotates with the transmission shaft 202, which in turn drives the support column 101 to rotate. The motor 201 has a built-in electromagnetic locking structure.

[0033] As can be seen from the embodiments, when the support column 101 needs to be reset, the positioning plate 208 is inserted into the positioning groove 209, which can assist in positioning the transmission disk 205, reduce the load on the motor 201, and help improve the service life of the motor 201 and its transmission components.

[0034] Example 2:

[0035] Combination Figure 3 As shown, based on Embodiment 1, an auxiliary component is provided on the support column 101. The auxiliary component 300 includes a load-bearing ring 301 fitted on the support column 101, a bracket 302 rotatably mounted on the load-bearing ring 301, an electric push rod 303 fixedly mounted on the bracket 302, and a positioning plate 304 fixedly connected to the output end of the electric push rod 303. The bracket 302 is bolted to the load-bearing ring 301. When the ground is uneven, the bracket 302 is moved to the tilted side, and then the electric push rod 303 is activated to lower the positioning plate for auxiliary support.

[0036] As can be seen from the above embodiments: First, when the vehicle is moving, the support column 101 is parallel to the ground. When the truck-mounted crane is in use, the L-shaped rod 207 is pulled to move it outward. The positioning plate 208 moves with the L-shaped rod 207 to disengage from the positioning groove 209. Then, the L-shaped rod 207 is rotated 90 degrees so that the positioning plate 208 does not enter the positioning groove 209. Subsequently, the output end of the motor 201 and the drive shaft 202 are fitted with meshing bevel gears 203. The motor 201 starts and drives the output shaft to rotate. The output shaft drives the drive shaft 202 to rotate through the bevel gears 203. The transmission disc 205 rotates with the drive shaft 202, which in turn drives the support column 101 to rotate, so that the support column 101 is perpendicular to the ground. The electric push rod 102 is activated, causing the positioning disc 103 to move downward, stabilizing the truck-mounted crane.

[0037] All contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are not shown in the figures because they are existing technologies, and will not be described here.

[0038] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements 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 tilting outrigger mechanism for a truck-mounted crane, comprising a main beam (100) serving as the carrier of the entire device, with support columns (101) on both sides of the main beam (100), an electric push rod (102) fixedly mounted on the support column (101), and a positioning disk (103) fixedly connected to the output end of the electric push rod (102), characterized in that: The main beam (100) is provided with a transmission assembly (200) for overturning the support column (101); The transmission assembly (200) comprises a load-bearing plate (204) fixed to both sides of the main beam (100), and the main beam (100) is further provided with a transmission shaft (202) rotatably installed thereon, both ends of the transmission shaft (202) are fixedly connected with a transmission disc (205), the support column (101) is fixedly connected with the corresponding transmission disc (205), and the transmission disc (205) is provided with a positioning member for fixing the transmission disc (205).

2. The automatic roll-over kickout mechanism for a truck-mounted crane according to claim 1, characterized in that: The positioning member comprises four positioning grooves (209) formed in the load-bearing plate (204), the four positioning grooves (209) are annularly distributed, the transmission disc (205) is fixedly connected with a connecting sleeve (206) on both sides, the connecting sleeve (206) is slidably connected with a connecting disc (211) inside, the connecting disc (211) and the inner wall of the connecting sleeve (206) are fixedly connected with a spring (212), the connecting sleeve (206) is slidably connected with an L-shaped rod (207) in the middle part, the L-shaped rod (207) is rotatably connected with the connecting disc (211), and the end of the L-shaped rod (207) is fixedly connected with a positioning plate (208) corresponding to the adjacent positioning groove (209).

3. The automatic roll-off leg mechanism for a truck-mounted crane according to claim 2, characterized in that: The connecting disc (211) is provided with an annular groove (214) inside, and the L-shaped rod (207) is fixedly connected with a sliding block (213) slidably connected with the annular groove (214).

4. The automatic roll-off leg mechanism for a truck-mounted crane according to claim 1, characterized in that: A plurality of marks (210) are formed in the transmission disc (205) for guiding the rotating direction of the L-shaped rod (207).

5. The automatic roll-off leg mechanism for a truck-mounted crane according to claim 1, characterized in that: The support column (101) is provided with an auxiliary assembly, and the auxiliary assembly (300) comprises a load-bearing ring (301) sleeved on the support column (101), a support (302) rotatably installed on the load-bearing ring (301), an electric push rod two (303) fixedly connected with the support (302), and a positioning disc two (304) fixedly connected with the output end of the electric push rod two (303).

6. The automatic roll-off kickout mechanism for a truck-mounted crane according to claim 1, characterized in that: The main beam (100) is fixedly connected with a motor (201), and the output end of the motor (201) and the transmission shaft (202) are sleeved with a meshing transmission bevel gear (203).

7. The automatic roll-off kickstand mechanism for a truck-mounted crane according to claim 6, characterized in that: The motor (201) is provided with an electromagnetic locking structure.

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