Anti-inclination auxiliary device of telescopic arm type truck-mounted crane
By installing a folding leg pad mechanism on the hydraulic lifting leg device of the truck crane, the problem of small stress surface of the support foot is solved, the stability and safety of lifting operations are improved, the operation is simplified and the machine is reduced Maintenance cost.
Patent Information
- Application Number
- CN202420505102.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-15
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-03-15
AI Technical Summary
The existing hydraulic leg device of the truck crane has a small force-bearing surface, which requires cumbersome pads or sleepers to expand the force-bearing surface of the support foot, and is easily lost, affecting stability and safety.
Install a folding leg pad mechanism on the hydraulic lifting leg device, and quickly expand the force surface of the support foot through the hinge and extension rod structure, including the folding pad, the main pad, the extension rod and the damper, the main pad can rotate A cross state is formed to increase the stress area.
It has achieved rapid expansion of the load bearing area of the hydraulic lifting leg device, improved the stability and safety of the truck crane, simplified operation, and reduced machine maintenance costs.
Smart Images
Figure CN222204590U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a telescopic arm type truck crane anti-tilt auxiliary device, belonging to the technical field of truck crane production. Background Art
[0002] Truck crane is the abbreviation of truck-mounted lifting transport vehicle. It is generally composed of a truck chassis, a cab, a cargo box, a power take-off, a crane and an operating position outside the cab. It is a device that realizes the lifting, rotation and hoisting of goods through a hydraulic lifting and telescopic system. The truck crane can be operated left and right, can rotate 360 degrees forward and backward, and can also rotate in all directions. When operating the crane, first open the mechanical lock and positioning pin, then fully extend the horizontal cylinder of the outrigger, and then extend the outrigger cylinder vertically to the ground to bear the force. The ground where the outrigger bears the force must be flat and solid to keep the body balanced. Then the staff climbs to the operating position and operates the crane for lifting operations.
[0003] The utility model with patent number 202021142706.9 discloses a vehicle body including a horizontal telescopic arm mounted on the vehicle body, the horizontal telescopic arm including a main telescopic arm, auxiliary telescopic arms are slidably provided at both ends of the main telescopic arm, a connecting block is connected to the end of the auxiliary telescopic arm away from the vehicle body, a hydraulic support leg is connected to the lower end of the connecting block, and a balancing buffer is fixedly connected to both ends of the connecting block, and the balancing buffer includes a pair of balancing rods. The utility model can greatly improve the supporting strength of the support arms on both sides of the vehicle body by adding balancing buffers to the vertical support arms, and can control the relative force of the balancing buffer on the support rod by changing the telescopic length of the support rod, thereby achieving the effect of balancing the supporting force, and at the same time, it can also reduce the problem that the hydraulic support legs are easily damaged due to the lack of protective devices between the existing hydraulic support legs, thereby reducing safety hazards and protecting the safety of people and vehicles.
[0004] Although the above patent can realize the function of a truck crane, the current technical considerations are not comprehensive and have the following disadvantages: the leg plate on the conventional cylinder leg usually has a small support surface, and measures need to be taken to ensure the stability of the machine during lifting operations. Generally, pads or sleepers are installed to expand the force-bearing surface of the leg plate to increase the force-bearing area of the crane cylinder leg and ensure its stability. At present, the process of finding and installing pads is relatively cumbersome and troublesome, and the pads or sleepers are directly piled on the vehicle body, which is very easy to be lost.
[0005] In order to solve one of the above problems, a telescopic arm type truck crane anti-tilt auxiliary device is urgently needed. Utility Model Content
[0006] In view of the above deficiencies in the prior art, the technical problem to be solved by the utility model is: how to achieve a faster expansion of the support foot stress surface by adding a folding support leg pad mechanism to the hydraulic lifting leg device which can provide auxiliary support for the support legs of the hydraulic lifting leg device, and for this purpose, a telescopic arm type vehicle-mounted crane anti-tilt auxiliary device is provided.
[0007] The telescopic arm type vehicle-mounted crane anti-tilt auxiliary device described in the utility model comprises a horizontal telescopic arm arranged on a vehicle body, and a hydraulic lifting leg device is installed at the execution end of the horizontal telescopic arm. It is characterized in that a folding leg pad mechanism is installed on the hydraulic lifting leg device to provide auxiliary support for the supporting feet of the hydraulic lifting leg device.
[0008] The support feet on conventional oil cylinder legs usually have a small support surface. When performing lifting operations, measures need to be taken to ensure the stability of the telescopic boom crane. Generally, pads or sleepers are used to expand the force-bearing surface of the support feet to increase the force-bearing area of the crane oil cylinder legs and ensure their stability.
[0009] The present application adds a folding leg pad mechanism to the hydraulic lifting leg device, which can provide auxiliary support for the supporting feet of the hydraulic lifting leg device, thereby quickly expanding the force-bearing surface of the supporting feet and ensuring the stability of the hydraulic lifting leg device of the telescopic arm truck crane by increasing the force-bearing area of the hydraulic lifting leg device.
[0010] Preferably, the folding leg pad mechanism includes a folding pad, a main pad is rotatably arranged on the outer side of the folding pad via a hinge pin, the main pad can rotate relative to the folding pad around the center line of the hinge pin, a first extension rod and a second extension rod are arranged on the other side of the folding pad, the first extension rod and the second extension rod are located on both sides of the hydraulic lifting leg device, the bottom ends of the first extension rod and the second extension rod are hingedly connected to the folding pad, the other ends of the first extension rod and the second extension rod are respectively hingedly connected to both sides of the outer wall of the hydraulic lifting leg device, and one end of the main pad is detachably connected to the hydraulic lifting leg device via a temporary fixing mechanism.
[0011] Preferably, the hydraulic lifting leg device comprises a supporting hydraulic cylinder, the execution end of the supporting hydraulic cylinder is hinged with a supporting foot, and the cylinder body of the supporting hydraulic cylinder is fixed with a leg connecting seat connected to the horizontal telescopic arm. It is an existing structure with simple and stable structure and low manufacturing and maintenance costs.
[0012] Preferably, the first extension rod includes a damper A and a tension return spring A sleeved on the damper A. The damper A includes a housing A with an inner cavity and a piston A. A piston connecting rod A connected to the piston A extends from one end of the housing A. The outer end of the piston connecting rod A and the other end of the housing A are respectively provided with a first spring seat A and a second spring seat A. A tension return spring A is provided between the first spring seat A and the second spring seat A. The first spring seat A is hinged to the outer wall of the bottom of the supporting hydraulic cylinder body through a first hinge seat A. The housing A is hinged to the upper surface of the folding pad through a second hinge seat A. Cooperating with the folding pad and the hydraulic lifting leg device, the storage box of the folding pad and the main pad is released.
[0013] Preferably, the second extension rod has the same structure as the first extension rod, including a damper B and a tension return spring B sleeved on the damper B. The damper B includes a shell B with an inner cavity and a piston B. The piston connecting rod B connected to the piston B extends from one end of the shell. The outer end of the piston connecting rod B and the other end of the shell are respectively provided with a first spring seat B and a second spring seat B. A tension return spring B is provided between the first spring seat B and the second spring seat B. The first spring seat B is hinged to the outer wall supporting the bottom of the hydraulic cylinder body through a first hinge seat B, and the shell B is hinged to the upper surface of the folding pad through a second hinge seat B.
[0014] Preferably, the temporary fixing mechanism includes a first connecting plate fixedly connected to the main pad and a second connecting plate fixedly connected to the cylinder body of the hydraulic lifting leg device, and the first connecting plate and the second connecting plate are both provided with sockets that cooperate with the connecting pins, and the first connecting plate and the second connecting plate are detachably connected through the connecting pins.
[0015] Preferably, the horizontal telescopic arm is an existing structure, including an outer tube connected to the vehicle body, one end of the telescopic main arm is inserted into the outer tube, and is slidably and telescopically matched with the outer tube. A push-pull cylinder is provided in the outer tube, and the push-pull cylinder provides power for the relative extension and retraction of the telescopic main arm and the outer tube.
[0016] Preferably, the length of the main pad is 2-5 times the length of the folding pad.
[0017] Preferably, the telescopic main arm is fixedly connected to the leg connecting seat by high-strength bolts.
[0018] Compared with the prior art, the utility model has the following beneficial effects:
[0019] The anti-tilt auxiliary device for the telescopic arm type truck crane described in the utility model is applied to add a folding leg pad mechanism on the hydraulic lifting leg device to provide auxiliary support for the supporting legs of the hydraulic lifting leg device, thereby quickly expanding the force-bearing surface of the supporting legs, and ensuring the stability of the hydraulic lifting leg device by increasing the force-bearing area of the hydraulic lifting leg device of the telescopic arm type truck crane.
[0020] The utility model discloses a telescopic arm type vehicle-mounted crane anti-tilt auxiliary device, wherein the hydraulic lifting leg device comprises a supporting hydraulic cylinder, the execution end of the supporting hydraulic cylinder is hinged with a supporting foot, and a leg connecting seat connected to the horizontal telescopic arm is fixed on the cylinder body of the supporting hydraulic cylinder, the structure is simple and stable, and the manufacturing and maintenance costs are low.
[0021] The utility model discloses a telescopic arm type vehicle-mounted crane anti-tilt auxiliary device, in which the main pad can rotate relative to the folding pad to form a cross state, thereby quickly expanding the force-bearing surface of the supporting foot to increase the force-bearing area of the crane cylinder legs and ensure their stability. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.
[0023] Figure 1 The structure of the utility model is shown in FIG. Figure 1 ;
[0024] Figure 2 The structure of the utility model is shown in FIG. Figure 2 ;
[0025] Figure 3 The structure of the utility model is shown in FIG. Figure 2 ;
[0026] In the figure: 1, horizontal telescopic arm 2, hydraulic lifting leg device 2.1, supporting hydraulic cylinder 2.2, supporting foot 2.3, leg connecting seat 3, folding pad 4, main pad 5, hinge pin 6, first extension rod 6.1, damper A 6.2, piston connecting rod A6.3, stretching return spring A 6.4, first spring seat A 6.5, second spring seat A 6.6, first articulated seat A 6.7, second articulated seat A 7, second extension rod 8, first connecting plate 9, second connecting plate 10, connecting pin. DETAILED DESCRIPTION
[0027] The utility model is further described below in conjunction with the accompanying drawings:
[0028] The present invention is further described below through specific embodiments, but is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
[0029] Embodiment 1, as Figure 1-2 As shown, the anti-tilt auxiliary device of a telescopic arm type truck crane comprises a horizontal telescopic arm 1 arranged on a vehicle body, a hydraulic lifting leg device 2 is installed at the execution end of the horizontal telescopic arm 1, and a folding leg pad mechanism is installed on the hydraulic lifting leg device 2 to provide auxiliary support for the supporting feet 2.2 of the hydraulic lifting leg device 2.
[0030] The support feet on conventional oil cylinder legs usually have a small support surface. When performing lifting operations, measures need to be taken to ensure the stability of the telescopic boom crane. Generally, pads or sleepers are used to expand the support foot 2.2 load-bearing surface to increase the load-bearing area of the crane oil cylinder legs and ensure their stability.
[0031] The present application adds a folding leg pad mechanism to the hydraulic lifting leg device 2, which can provide auxiliary support for the supporting foot 2.2 of the hydraulic lifting leg device 2, thereby quickly expanding the stress-bearing surface of the supporting foot 2.2, thereby increasing the stress-bearing area of the hydraulic lifting leg device 2 of the telescopic arm truck crane and ensuring its stability.
[0032] Embodiment 2, as Figure 1-2 As shown, the anti-tilt auxiliary device of a telescopic arm type truck crane comprises a horizontal telescopic arm 1 arranged on a vehicle body, a hydraulic lifting leg device 2 is installed at the execution end of the horizontal telescopic arm 1, and a folding leg pad mechanism is installed on the hydraulic lifting leg device 2 to provide auxiliary support for the supporting feet 2.2 of the hydraulic lifting leg device 2.
[0033] Furthermore, the folding leg pad mechanism includes a folding pad 3, on the outer surface of which a main pad 4 is rotatably arranged via a hinge pin 5, and the main pad 4 can rotate relative to the folding pad 3 around the center line of the hinge pin 5, and a first extension rod 6 and a second extension rod 7 are arranged on the other side of the folding pad 3, and the first extension rod 6 and the second extension rod 7 are located on both sides of the hydraulic lifting leg device 2, and the bottom ends of the first extension rod 6 and the second extension rod 7 are both hingedly connected to the folding pad 3, and the other ends of the first extension rod 6 and the second extension rod 7 are respectively hingedly connected to the two sides of the outer wall of the hydraulic lifting leg device 2, and one end of the main pad 4 is detachably connected to the hydraulic lifting leg device 2 through a temporary fixing mechanism.
[0034] Figure 1In the state, the main pad 4 is in a folded state, and the main pad 4 is connected to the hydraulic lifting leg device 2 through a temporary fixing mechanism. When the temporary fixing mechanism is unlocked, the two ends of the first extension rod 6 and the second extension rod 7 are respectively rotated relative to the hydraulic lifting leg device 2 and the folding pad 3, and the first extension rod 6 and the second extension rod 7 are converted from inclined to vertical, and the folding pad 3 can be switched from the vertical state to the horizontal state. Figure 2 Then the supporting hydraulic cylinder 2.1 is controlled to extend, and the supporting foot 2.2 abuts against the upper surface of the folding pad 3. The thrust of the supporting foot 2.2 can overcome the pulling force of the first extension rod 6 and the second extension rod 7. The first extension rod 6 and the second extension rod 7 extend until the main pad 4 touches the ground. Figure 3 The main pad 4 can rotate relative to the folding pad 3 to form a cross state, which can quickly expand the force bearing surface of the support foot 2.2 to increase the force bearing area of the crane cylinder leg and ensure its stability. Reverse operation can realize the conversion of the main pad 4 into a folding state.
[0035] Furthermore, the hydraulic lifting leg device 2 comprises a supporting hydraulic cylinder 2.1, the execution end of which is hinged with a supporting foot 2.2, and the cylinder body of the supporting hydraulic cylinder 2.1 is fixed with a leg connecting seat 2.3 connected to the horizontal telescopic arm 1. It is an existing structure with simple and stable structure and low manufacturing and maintenance costs.
[0036] Further, the first extension rod 6 includes a damper A6.1, and also includes a tension return spring A6.3 sleeved on the damper A. The damper A includes a housing A with an inner cavity and a piston A. The piston connecting rod A6.2 connected to the piston A extends from one end of the housing A. The outer end of the piston connecting rod A6.2 and the other end of the housing A are respectively provided with a first spring seat A6.4 and a second spring seat A6.5. A tension return spring A6.3 is provided between the first spring seat A6.4 and the second spring seat A6.5. The first spring seat A6.4 is hinged to the outer wall of the bottom of the cylinder body of the supporting hydraulic cylinder 2.1 through a first hinge seat A6.6. The housing A is hinged to the upper surface of the folding pad 3 through a second hinge seat A6.7. Cooperating with the folding pad 3 and the hydraulic lifting leg device 2, the storage box of the folding pad 3 and the main pad 4 is released.
[0037] Furthermore, the second extension rod 7 has the same structure as the first extension rod 6, including a damper B and a tension return spring B mounted on the damper B. The damper B includes a shell B with an inner cavity and a piston B. A piston connecting rod B connected to the piston B extends from one end of the shell. The outer end of the piston connecting rod B and the other end of the shell are respectively provided with a first spring seat B and a second spring seat B. A tension return spring B is arranged between the first spring seat B and the second spring seat B. The first spring seat B is hinged to the outer wall of the bottom of the cylinder body of the supporting hydraulic cylinder 2.1 through a first hinge seat B, and the shell B is hinged to the upper surface of the folding pad 3 through a second hinge seat B.
[0038] Furthermore, the temporary fixing mechanism includes a first connecting plate 8 fixedly connected to the main pad 4 and a second connecting plate 9 fixedly connected to the cylinder body of the hydraulic lifting leg device 2. The first connecting plate 8 and the second connecting plate 9 are both provided with sockets that cooperate with the connecting pin 10. The first connecting plate 8 and the second connecting plate 9 are detachably connected through the connecting pin 10.
[0039] Furthermore, the horizontal telescopic arm 1 is an existing structure, including an outer tube connected to the vehicle body, one end of the telescopic main arm is inserted into the outer tube, and slides and telescopes with the outer tube. A push-pull cylinder is arranged in the outer tube, and the push-pull cylinder provides power for the relative extension and retraction of the telescopic main arm and the outer tube.
[0040] Furthermore, the length of the main pad 4 is 2-5 times the length of the folding pad 3 .
[0041] Furthermore, the telescopic main arm is fixedly connected to the leg connecting seat 2.3 by high-strength bolts.
[0042] The anti-tilt auxiliary device for the telescopic arm type truck crane described in the utility model is applied to add a folding leg pad mechanism on the hydraulic lifting leg device to provide auxiliary support for the supporting legs of the hydraulic lifting leg device, thereby quickly expanding the force-bearing surface of the supporting legs, and ensuring the stability of the hydraulic lifting leg device by increasing the force-bearing area of the hydraulic lifting leg device of the telescopic arm type truck crane.
[0043] The utility model discloses a telescopic arm type vehicle-mounted crane anti-tilt auxiliary device, wherein the hydraulic lifting leg device comprises a supporting hydraulic cylinder, the execution end of the supporting hydraulic cylinder is hinged with a supporting foot, and a leg connecting seat connected to the horizontal telescopic arm is fixed on the cylinder body of the supporting hydraulic cylinder, the structure is simple and stable, and the manufacturing and maintenance costs are low.
[0044] The utility model discloses a telescopic arm type vehicle-mounted crane anti-tilt auxiliary device, in which the main pad can rotate relative to the folding pad to form a cross state, thereby quickly expanding the force-bearing surface of the supporting foot to increase the force-bearing area of the crane cylinder legs and ensure their stability.
[0045] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the present utility model is defined by the attached claims and their equivalents.
[0046] The matters not described in detail in the present invention are all known technologies to those skilled in the art.
Claims
1. A telescopic arm type vehicle mounted crane anti-tilt auxiliary device, comprising a horizontal telescopic arm arranged on a vehicle body, wherein a hydraulic lifting leg device is installed at the execution end of the horizontal telescopic arm, and characterized in that: The hydraulic lifting leg device is provided with a folding leg pad mechanism which provides auxiliary support for the supporting feet of the hydraulic lifting leg device.
2. The anti-tilt auxiliary device for the telescopic boom type truck crane according to claim 1 is characterized in that: The folding leg pad mechanism includes a folding pad, a main pad is rotatably arranged on the outer side of the folding pad via a hinge pin, the main pad can rotate relative to the folding pad around the center line of the hinge pin, a first extension rod and a second extension rod are arranged on the other side of the folding pad, the first extension rod and the second extension rod are located on both sides of the hydraulic lifting leg device, the bottom ends of the first extension rod and the second extension rod are hingedly connected to the folding pad, the other ends of the first extension rod and the second extension rod are respectively hingedly connected to both sides of the outer wall of the hydraulic lifting leg device, and one end of the main pad is detachably connected to the hydraulic lifting leg device via a temporary fixing mechanism.
3. The anti-tilt auxiliary device for the telescopic boom type truck crane according to claim 2 is characterized in that: The hydraulic lifting leg device comprises a supporting hydraulic cylinder, an execution end of which is hinged with a supporting foot, and a leg connecting seat connected to a horizontal telescopic arm is fixed on the cylinder body of the supporting hydraulic cylinder.
4. The anti-tilt auxiliary device for the telescopic boom type truck crane according to claim 3 is characterized in that: The first extension rod includes a damper A and a tension return spring A sleeved on the damper A. The damper A includes a shell A with an inner cavity and a piston A. A piston connecting rod A connected to the piston A extends from one end of the shell A. The outer end of the piston connecting rod A and the other end of the shell A are respectively provided with a first spring seat A and a second spring seat A. A tension return spring A is provided between the first spring seat A and the second spring seat A. The first spring seat A is hinged to the outer wall supporting the bottom of the hydraulic cylinder body through a first hinge seat A. The shell A is hinged to the upper surface of the folding pad through a second hinge seat A.
5. The anti-tilt auxiliary device for the telescopic boom type truck crane according to claim 4 is characterized in that: The second extension rod has the same structure as the first extension rod, including a damper B and a stretching return spring B sleeved on the damper B. The damper B includes a shell B with an inner cavity and a piston B. A piston connecting rod B connected to the piston B extends from one end of the shell. The outer end of the piston connecting rod B and the other end of the shell are respectively provided with a first spring seat B and a second spring seat B. A stretching return spring B is provided between the first spring seat B and the second spring seat B. The first spring seat B is hinged to the outer wall supporting the bottom of the hydraulic cylinder body through a first hinge seat B, and the shell B is hinged to the upper surface of the folding pad through a second hinge seat B.
6. The anti-tilt auxiliary device for the telescopic boom type truck crane according to claim 5, characterized in that: The temporary fixing mechanism includes a first connecting plate fixedly connected to the main pad and a second connecting plate fixedly connected to the cylinder body of the hydraulic lifting leg device. The first connecting plate and the second connecting plate are both provided with sockets that cooperate with the connecting pins, and the first connecting plate and the second connecting plate are detachably connected through the connecting pins.
7. The anti-tilt auxiliary device for a telescopic boom type truck crane according to claim 6, characterized in that: The horizontal telescopic arm includes an outer tube connected to the vehicle body, one end of the telescopic main arm is inserted into the outer tube, and is slidably and telescopically matched with the outer tube. A push-pull cylinder is arranged in the outer tube, and the push-pull cylinder provides power for the relative extension and retraction of the telescopic main arm and the outer tube.
8. The anti-tilt auxiliary device for a telescopic boom type truck crane according to claim 7, characterized in that: The length of the main pad is 2-5 times the length of the folding pad.
9. The anti-tilt auxiliary device for a telescopic boom type truck crane according to claim 8, characterized in that: The telescopic main arm is fixedly connected to the support leg connecting seat by high-strength bolts.