Lifting trolley assembly for crane

Abstract

The utility model discloses a crane trolley assembly for a crane, which relates to the technical field of crane lifting and comprises a main beam, an adjusting mechanism is mounted on the inner side of the main beam, a crane trolley is mounted in the middle of the adjusting mechanism, a hoister is mounted at the lower end of the crane trolley, a lifting rope is mounted at the lower end of the hoister, and a lifting rope is mounted at the lower end of the lifting rope. A lifting hook is fixedly installed at the bottom of the lifting rope, and buffering mechanisms are symmetrically installed on the left side and the right side of the hoisting trolley. Through the cooperation of the mounting barrel, the supporting column, the first spring, the supporting plate, the first rubber pad, the second rubber pad, the movable plate, the damper, the second spring, a limiting groove and a limiting block, the buffering effect generated when the first rubber pad makes contact with the second rubber pad is utilized, the self-rebounding effect of the first spring and the second spring is utilized, then buffering protection can be conducted on the crane carriage, and the service life of the crane carriage is prolonged. The crane carriage is prevented from colliding with the two ends of the main beam, and damage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of crane hoisting, in particular to a hoisting vehicle assembly for a crane. Background Art

[0002] A crane is a multi-action lifting machine that can lift heavy objects vertically and carry them horizontally within a certain range. It is also called an overhead crane, overhead crane, or crane.

[0003] Crane is the common name for crane. Crane is a kind of lifting machinery, which is a machine that performs cyclic and intermittent motion. A working cycle includes: the picking device picks up the object from the picking place, then moves horizontally to the designated place to lower the object, and then moves in the opposite direction to return the picking device to its original position for the next cycle. Such as fixed slewing cranes, tower cranes, truck cranes, tires, crawler cranes, etc.

[0004] The existing technology has the following problems:

[0005] In actual use, the existing trolley assembly has poor stability during movement when lifting and transporting heavy goods, and may deviate or derail, resulting in transportation failure, and has low safety. At the same time, when the existing trolley assembly moves to the end of the main beam, the brakes may be slow, causing the lifting trolley to hit the main beam, which may be damaged, making it unsuitable for use. Utility Model Content

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A trolley assembly for a crane comprises a main beam, an adjusting mechanism is installed on the inner side of the main beam, a lifting trolley is installed in the middle of the adjusting mechanism, a hoist is installed at the lower end of the lifting trolley, a lifting rope is installed at the lower end of the lifting machine, a lifting hook is fixedly installed at the bottom of the lifting rope, and buffer mechanisms are symmetrically installed on the left and right sides of the lifting trolley.

[0008] Preferably: the adjusting mechanism includes a screw rod 1, the left and right sides of which are rotatably connected to the inner walls of the front end of the main beam, a screw rod 2 is installed on the rear side of the screw rod 1, and threaded slides with threaded connections are installed on the outside of the screw rods 1 and 2, a protective cover is fixedly installed on the right end of the main beam, a transmission sprocket is rotatably connected to the front side of the right end of the main beam, and a driven sprocket is rotatably connected to the rear side of the right end of the main beam, the transmission sprocket and the driven sprocket are externally sleeved with meshing chains, and a motor is fixedly installed on the right end of the transmission sprocket.

[0009] Preferably, the left and right sides of the second screw rod are rotatably connected to the inner walls of the rear end of the main beam, and the two groups of threaded slides are fixedly connected to the two sides of the lifting trolley.

[0010] Preferably, the right end of the screw rod 1 is transmission-connected to the left end of the driving sprocket, the right end of the screw rod 2 is transmission-connected to the left end of the driven sprocket, and the bottom end of the motor is fixedly connected to the inner bottom end of the protective cover.

[0011] Preferably: the buffer mechanism includes a mounting tube, the bottom end of the mounting tube is symmetrically fixedly connected to the left and right sides of the lifting trolley, a pillar is slidably installed inside the mounting tube, a spring 1 is sleeved on the outside of the pillar, a support plate is fixedly installed on the top of the pillar, a rubber pad 1 is fixedly installed on the front side of the support plate, a rubber pad 2 is symmetrically fixedly installed on the left and right middle inner walls of the main beam, a movable plate is fixedly installed on the bottom end of the pillar, a damper is fixedly installed on the inner bottom end of the mounting tube, a spring 2 is sleeved on the outside of the damper, limiting grooves are symmetrically provided on the front and rear inner walls of the mounting tube, and limiting blocks are symmetrically fixedly installed on the front and rear end faces of the movable plate.

[0012] Preferably, one end of the spring is fixedly connected to the front end of the mounting tube, the other end is fixedly connected to the inner side of the support plate, and the outer side of the movable plate is slidably connected to the inner side of the mounting tube.

[0013] Preferably: the top of the damper is fixedly connected to the bottom end of the movable plate, one end of the spring 2 is fixedly connected to the inner bottom surface of the mounting tube, and the other end is fixedly connected to the bottom surface of the support plate, and the limit block is slidably connected to the limit groove.

[0014] Preferably, the lower end of the lifting trolley is fixedly connected to the upper end of the hoist.

[0015] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0016] 1. The utility model provides a trolley assembly for a crane, which can limit the lifting trolley by using the threaded slide seat through the adjustment mechanism, through the cooperation of screw rod 1, screw rod 2, threaded slide seat, protective cover, transmission sprocket, driven sprocket, chain and motor, so that the lifting trolley can only move left and right horizontally on two sets of screw rods, thereby improving the stability of the moving process, thereby ensuring the stability of the heavy objects when lifting them, thereby reducing the potential safety hazards.

[0017] 2. The utility model provides a trolley assembly for a crane, which uses a buffer mechanism, through the cooperation of an installation tube, a pillar, a spring 1, a support plate, a rubber pad 1, a rubber pad 2, a movable plate, a damper, a spring 2, a limit groove, and a limit block, and utilizes the buffer effect generated when the rubber pad 1 and the rubber pad 2 are in contact, and then through the self-rebound effect of the spring 1 and the spring 2, the lifting trolley can be buffered and protected to prevent the lifting trolley from colliding with the two ends of the main beam to avoid damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a trolley assembly for a crane of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the adjustment mechanism of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the adjustment mechanism details of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the buffer mechanism of the utility model;

[0022] Figure 5 It is a structural schematic diagram of the detail diagram of the buffer mechanism of the utility model.

[0023] In the figure: 1. main beam; 2. adjusting mechanism; 3. lifting trolley; 4. hoist; 5. lifting rope; 6. hook; 7. buffer mechanism; 21. screw rod 1; 22. screw rod 2; 23. threaded slide; 24. protective cover; 25. driving sprocket; 26. driven sprocket; 27. chain; 28. motor; 71. mounting cylinder; 72. pillar; 73. spring 1; 74. support plate; 75. rubber pad 1; 76. rubber pad 2; 77. movable plate; 78. damper; 79. spring 2; 710. limit groove; 711. limit block. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the embodiments:

[0025] like Figure 1-5 As shown, the utility model provides a hoisting vehicle assembly for a crane, comprising a main beam 1, an adjusting mechanism 2 is installed on the inner side of the main beam 1, a lifting trolley 3 is installed in the middle of the adjusting mechanism 2, a hoist 4 is installed at the lower end of the lifting trolley 3, a lifting rope 5 is installed at the lower end of the lifting rope 4, a lifting hook 6 is fixedly installed at the bottom of the lifting rope 5, and buffer mechanisms 7 are symmetrically installed on the left and right sides of the lifting trolley 3.

[0026] The lower end of the lifting trolley 3 is fixedly connected to the upper end of the hoist 4.

[0027] By adjusting the mechanism 2, the threaded slide 23 can be used to limit the lifting trolley 3, so that the lifting trolley 3 can only move horizontally left and right on the two sets of screw rods, thereby improving the stability of the movement process, thereby ensuring its stability when heavy objects are lifted, thereby reducing its safety hazards. Through the buffer mechanism 7, the buffering effect generated when the rubber pad 1 75 and the rubber pad 2 76 are in contact, and then through the self-rebound effect of the spring 1 73 and the spring 2 79, the lifting trolley 3 can be buffered and protected to prevent the lifting trolley 3 from colliding with the two ends of the main beam 1 to avoid damage.

[0028] like Figure 2-3 As shown, the adjusting mechanism 2 includes a screw rod 21, the left and right sides of which are rotatably connected to the inner walls of the front end of the main beam 1, a screw rod 22 is installed on the rear side of the screw rod 21, and the outsides of the screw rods 21 and 22 are both installed with threaded slides 23 with threaded connections, a protective cover 24 is fixedly installed on the right end of the main beam 1, a transmission sprocket 25 is rotatably connected to the front side of the right end of the main beam 1, and a driven sprocket 26 is rotatably connected to the rear side of the right end of the main beam 1, and meshing chains 27 are sleeved on the outsides of the transmission sprocket 25 and the driven sprocket 26, and a motor 28 is fixedly installed on the right end of the transmission sprocket 25.

[0029] The left and right sides of the screw rod 22 are rotatably connected to the inner walls of the rear end of the main beam 1 , and the two sets of threaded slide seats 23 are fixedly connected to the two sides of the lifting trolley 3 .

[0030] The right end of the screw rod 21 is transmission connected to the left end of the driving sprocket 25 , the right end of the screw rod 22 is transmission connected to the left end of the driven sprocket 26 , and the bottom end of the motor 28 is fixedly connected to the inner bottom end of the protective cover 24 .

[0031] The motor 28, the driving sprocket 25 and the driven sprocket 26 can form a transmission assembly, so that the screw rod 21 and the screw rod 22 can rotate synchronously, which is convenient for use. At the same time, the protective cover 24 can protect the transmission assembly.

[0032] like Figure 4-5 As shown, the buffer mechanism 7 includes a mounting cylinder 71, the bottom end of which is symmetrically fixedly connected to the left and right sides of the lifting trolley 3, a pillar 72 is slidably installed inside the mounting cylinder 71, a spring 73 is sleeved on the outside of the pillar 72, a support plate 74 is fixedly installed on the top of the pillar 72, a rubber pad 75 is fixedly installed on the front side of the support plate 74, rubber pads 76 are symmetrically fixedly installed on the left and right middle inner walls of the main beam 1, a movable plate 77 is fixedly installed on the bottom end of the pillar 72, a damper 78 is fixedly installed on the inner bottom end of the mounting cylinder 71, a spring 79 is sleeved on the outside of the damper 78, the front and rear inner walls of the mounting cylinder 71 are symmetrically provided with limiting grooves 710, and the front and rear end faces of the movable plate 77 are symmetrically fixedly installed with limiting blocks 711.

[0033] One end of the spring 1 73 is fixedly connected to the front end of the mounting tube 71 , and the other end is fixedly connected to the inner side of the support plate 74 . The outer side of the movable plate 77 is slidably connected to the inner side of the mounting tube 71 .

[0034] The top of the damper 78 is fixedly connected to the bottom end of the movable plate 77, one end of the spring 79 is fixedly connected to the inner bottom surface of the mounting tube 71, and the other end is fixedly connected to the bottom surface of the support plate 74, and the limit block 711 is slidably connected to the limit groove 710.

[0035] When the movable plate 77 moves in the installation tube 71 , the limiting block 711 is driven to slide in the limiting groove 710 , thereby improving the stability of the movable plate 77 when moving.

[0036] The working principle of the trolley assembly for the crane will be described in detail below.

[0037] like Figure 1-5 As shown, when the trolley assembly for the crane is in use, the hoisting machine 4 can be started to reverse first, so that the hoisting machine 4 drives the lifting rope 5 to descend, and then the goods can be hooked with the hook 6, and then the motor 28 can be started, and the motor 28 drives the transmission sprocket 25 to rotate, so that the transmission sprocket 25 drives the driven sprocket 26 to rotate synchronously through the chain 27, and then the screw rod 1 21 and the screw rod 22 can be driven to rotate synchronously, so that the threaded slide 23 connected by the thread can move horizontally left and right, so that the threaded slide 23 drives the lifting trolley 3 and the hoisting machine 4 to move synchronously, and at the same time, the hoisting machine 4 is started to run forward, and then the goods can be driven to rise through the lifting rope 5 and the hook 6, so as to achieve the lifting effect of the goods, and at the same time, the threaded slides 23 on both sides can be used to The heavy trolley 3 is limited to improve the moving stability of the lifting trolley 3, thereby reducing safety hazards; at the same time, when the lifting trolley 3 moves to the left and right ends of the main beam 1, the rubber pads 1 75 on both sides of the lifting trolley 3 will contact and collide with the rubber pads 2 76, and the support plate 74 will drive the pillar 72 to move backward. At this time, the spring 1 73 will be compressed, and the pillar 72 will drive the movable plate 77 to move inside the installation tube 71, and then the movable plate 77 can be used to compress the spring 2 79 and the damper 78, and the buffering effect generated by the contact between the rubber pads 1 75 and the rubber pads 2 76 and the rebound effect of the springs 1 73 and 2 79 themselves, and then the two sides of the lifting trolley 3 can be buffered and protected, thereby avoiding damage to the lifting trolley 3.

[0038] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A trolley assembly for a crane, comprising a main beam (1), an adjustment mechanism (2) being installed on the inner side of the main beam (1), characterized in that: A lifting trolley (3) is installed in the middle of the adjustment mechanism (2), a hoist (4) is installed at the lower end of the lifting trolley (3), a lifting rope (5) is installed at the lower end of the lifting rope (4), a lifting hook (6) is fixedly installed at the bottom of the lifting rope (5), and buffer mechanisms (7) are symmetrically installed on the left and right sides of the lifting trolley (3).

2. A trolley assembly for a crane according to claim 1, characterized in that: The adjusting mechanism (2) comprises a screw rod (21), the left and right sides of the screw rod (21) are rotatably connected to the inner walls of the front end of the main beam (1), the rear side of the screw rod (21) is equipped with a screw rod (22), the outside of the screw rod (21) and the screw rod (22) are both equipped with a threaded slide seat (23) connected by a thread, the right end of the main beam (1) is fixedly equipped with a protective cover (24), the front side of the right end of the main beam (1) is rotatably connected to a transmission sprocket (25), the rear side of the right end of the main beam (1) is rotatably connected to a driven sprocket (26), the outside of the transmission sprocket (25) and the driven sprocket (26) are sleeved with meshing chains (27), and the right end of the transmission sprocket (25) is fixedly equipped with a motor (28).

3. A trolley assembly for a crane according to claim 2, characterized in that: The left and right sides of the second screw rod (22) are rotatably connected to the inner walls of the rear end of the main beam (1), and the two groups of threaded slide seats (23) are fixedly connected to the two sides of the lifting trolley (3).

4. A trolley assembly for a crane according to claim 3, characterized in that: The right end of the screw rod 1 (21) is transmission-connected to the left end of the transmission sprocket (25), the right end of the screw rod 2 (22) is transmission-connected to the left end of the driven sprocket (26), and the bottom end of the motor (28) is fixedly connected to the inner bottom end of the protective cover (24).

5. A trolley assembly for a crane according to claim 1, characterized in that: The buffer mechanism (7) comprises a mounting cylinder (71), the bottom end of which is symmetrically fixedly connected to the left and right sides of the lifting trolley (3), a pillar (72) is slidably mounted inside the mounting cylinder (71), a spring (73) is sleeved on the outside of the pillar (72), a support plate (74) is fixedly mounted on the top of the pillar (72), a rubber pad (75) is fixedly mounted on the front side of the support plate (74), a rubber pad (76) is symmetrically fixedly mounted on the left and right middle inner walls of the main beam (1), a movable plate (77) is fixedly mounted on the bottom end of the pillar (72), a damper (78) is fixedly mounted on the bottom end of the mounting cylinder (71), a spring (79) is sleeved on the outside of the damper (78), and limit grooves (710) are symmetrically provided on the front and rear inner walls of the mounting cylinder (71), and limit blocks (711) are symmetrically fixedly mounted on the front and rear end surfaces of the movable plate (77).

6. A trolley assembly for a crane according to claim 5, characterized in that: One end of the spring 1 (73) is fixedly connected to the front end of the mounting tube (71), and the other end is fixedly connected to the inner side of the support plate (74). The outer side of the movable plate (77) is slidably connected to the inner side of the mounting tube (71).

7. A trolley assembly for a crane according to claim 6, characterized in that: The top of the damper (78) is fixedly connected to the bottom of the movable plate (77), one end of the spring (79) is fixedly connected to the inner bottom surface of the mounting tube (71), and the other end is fixedly connected to the bottom surface of the support plate (74), and the limit block (711) is slidably connected to the limit groove (710).

8. A trolley assembly for a crane according to claim 1, characterized in that: The lower end of the lifting trolley (3) is fixedly connected to the upper end of the hoist (4).

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