Supporting frame for crane

Abstract

The utility model discloses a support frame for a crane, which comprises a mounting plate, a support seat is fixedly mounted at the top of the mounting plate, a support block is fixedly mounted at the top of the support seat, and limiting grooves are formed in two sides of the top of the mounting plate. According to the supporting frame for the crane, the mounting plate, the sliding block, the threaded rod, the movable plate, the clamping plates, the supporting block, a supporting seat, a first cavity, a second cavity, a limiting groove, a motor, a worm gear and a worm are used in cooperation, and when the two clamping plates move relatively, the two sides of a crane jib placed on the top of the supporting block can be clamped and fixed; according to the supporting frame for the crane jib, the stability of the crane jib placed on the supporting frame is ensured, the supporting frame does not adopt any spring structure to fix and limit the crane jib, the clamping plate is driven to move in a mechanical driving mode, the effect of fixing or releasing limit of the crane jib is achieved, and the possible damage problem of the spring structure is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to a supporting frame for cranes. Background Art

[0002] At present, the crane boom is installed on the frame behind the cab through a bracket, which is used to support the boom at the front of the vehicle to prevent the boom from interfering with the cab. When the crane is operating, the boom is separated from the boom bracket and lifted; when the crane stops operating, the boom falls back to the boom bracket, and the boom bracket and the boom travel together with the vehicle. Since the boom bracket will bear more impact loads from the boom when the vehicle is driving on non-highway roads, the boom bracket is required to have high strength, rigidity and stability to avoid fatigue damage, damage to the cab and even casualties.

[0003] The Chinese patent publication number is CN220033859U. It discloses a crane support frame, which includes a support frame base, and the top wall of the support frame base is symmetrically fixedly connected with vertical limit support plates on the left and right sides. The tops of the two limit support plates are penetrated with sliding holes, and the two sliding holes are slidably inserted with horizontal stress slide bars. The utility model sets a positioning mechanism and a clamping mechanism to achieve the equipment to cooperate with the lifting and lowering of the crane boom, automatically complete the clamping and positioning operation of the crane boom, and do not need manual assistance, thereby improving the convenience of using the equipment.

[0004] With respect to the above-mentioned related technologies, the support frame has some shortcomings. In actual use, the support frame fixes the crane boom and automatically releases the limit through the cooperation of multiple springs. If the crane is not used for a long time, the support frame will be in a state of continuous compression or tension during the process of supporting the crane boom, causing the springs to lose elasticity and gradually fail. This will cause the use effect of the support frame to gradually decrease, making the support frame not very stable in use. Therefore, it is necessary to provide a support frame for a crane to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of the utility model is to provide a support frame for a crane to solve at least one technical problem existing in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A support frame for a crane, comprising:

[0008] A mounting plate, a support seat is fixedly mounted on the top of the mounting plate, a support block is fixedly mounted on the top of the support seat, limiting grooves are provided on both sides of the top of the mounting plate, a first cavity is provided at the bottom of the support seat, a second cavity is provided on the top of the mounting plate, and the position of the second cavity corresponds to that of the first cavity, a threaded rod is rotatably mounted inside the first cavity, and both ends of the threaded rod penetrate the inner wall of the first cavity and extend to both sides of the support seat;

[0009] A left-handed thread is provided on one side of the outer wall of the threaded rod, and a right-handed thread is provided on the other side of the outer wall of the threaded rod. A symmetrically distributed movable plate is sleeved on the outer wall of the threaded rod, a slider is fixedly installed on the bottom of the movable plate, and the slider is slidably connected to the limit groove, a clamping plate is fixedly installed above the opposite sides of the two movable plates, and a driving mechanism is provided inside the second cavity.

[0010] Preferably, fixed frames are fixedly installed on both sides of the top of the mounting plate, a rotating shaft is rotatably installed on the top of the movable plate, a limiting plate is fixedly installed on the top of the rotating shaft, and mounting frames are fixedly installed on the upper sides of opposite sides of the two movable plates, a first bevel gear is fixedly installed on the outer wall of the rotating shaft, an adjusting screw rod is rotatably installed on the mounting frame, a second bevel gear is fixedly installed on one end of the adjusting screw rod, and the second bevel gear is meshed with the first bevel gear, a threaded sleeve is threadedly sleeved on the outer wall of the adjusting screw rod, and the threaded sleeve is fixedly connected to the top of the corresponding fixed frame.

[0011] Preferably, the driving mechanism includes a motor, and the motor is fixedly installed inside the second cavity. A worm is fixedly installed on the driving end of the motor, and the worm extends into the interior of the first cavity and is rotatably connected to a bearing installed on the top of the inner wall of the first cavity. A worm wheel is fixedly installed on the outer wall of the threaded rod, and the worm wheel is meshed with the worm.

[0012] Preferably, a threaded hole matched with the threaded rod is opened below one side of the movable plate, and the movable plate is threadedly connected to the threaded rod through the threaded hole opened below one side of the movable plate.

[0013] Preferably, a plurality of heat dissipation holes are provided on the front side of the mounting plate, and the heat dissipation holes are communicated with the interior of the second cavity.

[0014] Preferably, rubber pads are fixedly mounted on the top of the support block and on the opposite sides of the two clamping plates.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model uses a mounting plate, a slider, a threaded rod, a movable plate, a clamping plate, a support block, a support seat, a first cavity, a second cavity, a limiting groove, a motor, a worm gear and a worm in coordination. When the two clamping plates move relative to each other, the two sides of the crane boom placed on the top of the support block will be clamped and fixed to ensure the stability of the crane boom placed on the support frame. The support frame does not use any spring structure to achieve the fixed limit of the crane boom, but uses a mechanical drive to drive the movement of the clamping plate to achieve the effect of fixing or releasing the limit of the crane boom, effectively avoiding the possible damage problem of the spring structure and improving the stability of the entire support frame.

[0017] 2. The utility model uses a fixed frame, a limit plate, a rotating shaft, a first bevel gear, a second bevel gear, a mounting frame and a threaded sleeve in coordination. During the relative movement of the two movable plates, the two limit plates will also rotate relatively. When the clamping plates fully clamp the crane boom, the two limit plates will move to the top of the boom and limit the space above the top of the crane boom. This can prevent the risk of the crane boom being separated from the top of the support frame due to bumps on special roads when the crane boom is traveling with the vehicle, thereby improving the stability of the comprehensive support for the crane boom. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 It is a structural schematic diagram of the mounting plate in the utility model.

[0020] Figure 3 For the utility model Figure 1 Enlarged structural diagram at A in the middle.

[0021] Figure 4 For the utility model Figure 1 Enlarged structural diagram at B in the middle.

[0022] In the figure: 1. mounting plate; 2. slider; 3. threaded rod; 4. fixing frame; 5. movable plate; 6. clamping plate; 7. adjusting screw; 8. limiting plate; 9. rotating shaft; 10. supporting block; 11. supporting seat; 12. first cavity; 13. second cavity; 14. limiting groove; 15. motor; 16. worm wheel; 17. worm; 18. first bevel gear; 19. second bevel gear; 20. mounting frame; 21. threaded sleeve. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-4 , an embodiment provided by the utility model:

[0028] A support frame for a crane, comprising:

[0029] A mounting plate 1, a support seat 11 is fixedly mounted on the top of the mounting plate 1, a support block 10 is fixedly mounted on the top of the support seat 11, limiting grooves 14 are provided on both sides of the top of the mounting plate 1, a first cavity 12 is provided at the bottom of the support seat 11, a second cavity 13 is provided on the top of the mounting plate 1, and the second cavity 13 corresponds to the position of the first cavity 12, a threaded rod 3 is rotatably mounted inside the first cavity 12, and both ends of the threaded rod 3 penetrate the inner wall of the first cavity 12 and extend to both sides of the support seat 11;

[0030] A left-handed thread is provided on one side of the outer wall of the threaded rod 3, and a right-handed thread is provided on the other side of the outer wall of the threaded rod 3. A symmetrically distributed movable plate 5 is sleeved on the outer wall of the threaded rod 3. A slider 2 is fixedly installed on the bottom of the movable plate 5, and the slider 2 is slidably connected to the limit groove 14. A clamping plate 6 is fixedly installed above the opposite sides of the two movable plates 5, and a driving mechanism is provided inside the second cavity 13.

[0031] Fixed frames 4 are fixedly installed on both sides of the top of the mounting plate 1, a rotating shaft 9 is rotatably installed on the top of the movable plate 5, a limiting plate 8 is fixedly installed on the top of the rotating shaft 9, and mounting frames 20 are fixedly installed on the upper sides of the opposite sides of the two movable plates 5, a first bevel gear 18 is fixedly installed on the outer wall of the rotating shaft 9, an adjusting screw rod 7 is rotatably installed on the mounting frame 20, a second bevel gear 19 is fixedly installed on one end of the adjusting screw rod 7, and the second bevel gear 19 is meshed with the first bevel gear 18, a threaded sleeve 21 is threadedly sleeved on the outer wall of the adjusting screw rod 7, and the threaded sleeve 21 is fixedly connected to the top of the corresponding fixed frame 4, thereby achieving a limiting effect on the top space of the support frame, and the movement of the limiting plate 8 and the movement of the clamping plate 6 share a driving source, which reduces the operating cost of the equipment and improves the applicability of the equipment.

[0032] In one embodiment, the driving mechanism includes a motor 15, and the motor 15 is fixedly installed inside the second cavity 13. A worm 17 is fixedly installed on the driving end of the motor 15, and the worm 17 extends to the inside of the first cavity 12 and is rotatably connected to a bearing installed on the top of the inner wall of the first cavity 12. A worm gear 16 is fixedly installed on the outer wall of the threaded rod 3, and the worm gear 16 is meshed with the worm 17. The clamping plate 6 clamps and fixes the crane boom by means of mechanical driving.

[0033] In one preferred embodiment, a threaded hole matched with the threaded rod 3 is opened at the bottom of one side of the movable plate 5, and the movable plate 5 is threadedly connected to the threaded rod 3 through the threaded hole opened at the bottom of one side.

[0034] In one of the embodiments, a plurality of heat dissipation holes are provided on the front side of the mounting plate 1 , and the heat dissipation holes are connected to the interior of the second cavity 13 , which has a heat dissipation effect on the motor 15 , thereby maintaining the normal working temperature of the motor 15 .

[0035] In one preferred embodiment, rubber pads are fixedly mounted on the top of the support block 10 and the opposite sides of the two clamping plates 6. The elasticity and stability of the rubber pads can provide additional support and fixation, reducing the shaking and swaying of the crane boom during operation. This helps to improve the stability of the crane boom and reduce the impact of vibration on the support system.

[0036] The working principle of the utility model is as follows: the electrical components appearing in the present application are all externally connected to a power supply and a control switch when in use. When the support frame is in use, the mounting plate 1 is installed at a specified position. When the crane stops operating, the crane boom falls on the top of the support block 10, and the operator controls the motor 15 through the switch to start working. The driving end of the motor 15 drives the worm 17 to rotate, and the worm 17 is meshed with the worm wheel 16, so that the worm wheel 16 drives the threaded rod 3 to rotate. The left-handed thread and the right-handed thread on the threaded rod 3 are threadedly driven, and the movable plate 5 slides through the bottom slider 2 and the limit groove 14. The dynamic relationship enables the two movable plates 5 to move relative to each other or in the opposite direction. The movement of the movable plate 5 drives the clamping plate 6 to move. When the two clamping plates 6 move relative to each other, they will clamp and fix the two sides of the crane boom placed on the top of the support block 10, ensuring the stability of the crane boom placed on the support frame. The support frame does not use any spring structure to achieve the fixed limit of the crane boom, but uses a mechanical drive to drive the movement of the clamping plate 6 to achieve the effect of fixing or releasing the limit of the crane boom, effectively avoiding the possible damage problem of the spring structure and improving the stability of the entire support frame.

[0037] In the process of clamping and limiting the crane boom by the clamping plate 6, the movement of the movable plate 5 will drive the mounting frame 20 to move, and the movement of the mounting frame 20 will drive the adjusting screw rod 7 to move. Through the threaded transmission of the adjusting screw rod 7 and the threaded sleeve 21, the adjusting screw rod 7 will produce self-rotation in the process of following the lateral movement of the movable plate 5, and the rotation of the adjusting screw rod 7 drives the second bevel gear 19 to rotate. Through the meshing of the second bevel gear 19 and the first bevel gear 18, the first bevel gear 18 drives the rotating shaft 9 to rotate, and the rotation of the rotating shaft 9 drives the limiting plate 8 to rotate. Therefore, in the process of relative movement of the two movable plates 5, the two limiting plates 8 will also rotate relatively, and when the clamping plate 6 is completely clamped on the crane boom, the two limiting plates 8 will move to the top of the boom and limit the space above the top of the crane boom, which can prevent the risk of the boom detaching from the top of the support frame due to the bumps of special roads when the crane boom is traveling with the vehicle, thereby improving the stability of comprehensive support for the crane boom.

[0038] The above is only an embodiment of the utility model, and the common sense such as the known specific structure and characteristics in the scheme is not described too much here. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model. Any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. A support frame for a crane, characterized in that: It includes: A mounting plate (1), wherein a support seat (11) is fixedly mounted on the top of the mounting plate (1), a support block (10) is fixedly mounted on the top of the support seat (11), limiting grooves (14) are provided on both sides of the top of the mounting plate (1), a first cavity (12) is provided at the bottom of the support seat (11), a second cavity (13) is provided on the top of the mounting plate (1), and the position of the second cavity (13) corresponds to that of the first cavity (12), a threaded rod (3) is rotatably mounted inside the first cavity (12), and both ends of the threaded rod (3) penetrate the inner wall of the first cavity (12) and extend to both sides of the support seat (11); A left-handed thread is provided on one side of the outer wall of the threaded rod (3), and a right-handed thread is provided on the other side of the outer wall of the threaded rod (3). A symmetrically distributed movable plate (5) is sleeved on the outer wall of the threaded rod (3). A slider (2) is fixedly mounted on the bottom of the movable plate (5), and the slider (2) is slidably connected to the limit groove (14). A clamping plate (6) is fixedly mounted above the opposite sides of the two movable plates (5), and a driving mechanism is provided inside the second cavity (13).

2. A crane support frame according to claim 1, characterized in that: A fixing frame (4) is fixedly mounted on both sides of the top of the mounting plate (1); a rotating shaft (9) is rotatably mounted on the top of the movable plate (5); a limit plate (8) is fixedly mounted on the top of the rotating shaft (9); a mounting frame (20) is fixedly mounted on the top of the opposite sides of the two movable plates (5); a first bevel gear (18) is fixedly mounted on the outer wall of the rotating shaft (9); an adjusting screw rod (7) is rotatably mounted on the mounting frame (20); a second bevel gear (19) is fixedly mounted on one end of the adjusting screw rod (7), and the second bevel gear (19) is meshed with the first bevel gear (18); a threaded sleeve (21) is threadedly sleeved on the outer wall of the adjusting screw rod (7), and the threaded sleeve (21) is fixedly connected to the top of the corresponding fixing frame (4).

3. A crane support frame according to claim 1, characterized in that: The driving mechanism comprises a motor (15), and the motor (15) is fixedly mounted inside the second cavity (13); a worm (17) is fixedly mounted on the driving end of the motor (15), and the worm (17) extends into the first cavity (12) and is rotatably connected to a bearing mounted on the top of the inner wall of the first cavity (12); a worm wheel (16) is fixedly mounted on the outer wall of the threaded rod (3), and the worm wheel (16) is meshed with the worm (17).

4. A crane support frame according to claim 1, characterized in that: A threaded hole matching the threaded rod (3) is provided below one side of the movable plate (5), and the movable plate (5) is threadedly connected to the threaded rod (3) via the threaded hole provided below one side of the movable plate (5).

5. A crane support frame according to claim 3, characterized in that: A plurality of heat dissipation holes are provided on the front side of the mounting plate (1), and the heat dissipation holes are connected to the interior of the second cavity (13).

6. A crane support frame according to claim 1, characterized in that: Rubber pads are fixedly mounted on the top of the support block (10) and on the opposite sides of the two clamping plates (6).

Images