Counterweight device for crane

Abstract

The utility model discloses a counterweight device for a crane, which relates to the technical field of counterweights for cranes, and comprises a counterweight block, an expansion unit is arranged on the bottom surface of the counterweight block, a limiting unit is arranged in the expansion unit, an adjusting unit is arranged on one side of the expansion unit, a lifting unit is arranged on the top surface of the adjusting unit, and the lifting unit is arranged on the bottom surface of the counterweight block. The extension unit comprises a placement box, the placement box is arranged on the bottom surface of the balancing weight, a limiting groove is formed in the placement box, the bottom surface of the placement box is fixedly connected with a first motor, the output end of the first motor is in transmission connection with a first gear, and one side of the first gear is in meshed connection with a rack; and one side of the rack is fixedly connected with an expansion plate. Through the arrangement of the placing box, the limiting groove, the motor I, the gear I, the rack and the expansion plate, the effect of conveniently expanding the number of added balancing weights is achieved, meanwhile, the practicability of the device is improved, and meanwhile, the working safety of the crane is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of counterweight for crane, specifically relates to a counterweight device for crane. BACKGROUND

[0002] The working principle of the hoisting machinery is mainly that the motor drives the speed reducer, and then drives the drum to rotate, so that the steel wire rope is wound or released on the drum, thereby realizing the lifting of the lifting hook. At the same time, through the cooperation of the luffing mechanism and the traveling mechanism, the horizontal movement of the goods and the movement of the hoisting machinery are realized.

[0003] The currently announced number CN213895000U discloses a kind of counterweight device for crane, applied in the field of crane, it includes multiple counterweight blocks, also include hoisting load plate, multiple described counterweight blocks are sequentially stacked on hoisting load plate, hoisting column is provided on the hoisting load plate, multiple described counterweight blocks are equipped with through hole for hoisting column to pass through, the hoisting hole is equipped in the end of hoisting column away from hoisting load plate.This application has the effect of improving the hoisting efficiency of counterweight block.

[0004] In order to solve the problem of counterweight hoisting, the prior art is to use hoisting column to enable multiple counterweight blocks to be stably stacked on the hoisting load plate, but there may be a situation that the device counterweight addition cannot be expanded, thereby causing the problem of low practicality of the device. INVENTION CONTENTS

[0005] The utility model aims at providing a kind of counterweight device for crane, to solve the problems raised in the above background.

[0006] To solve the above technical problems, the technical scheme adopted by the utility model is:

[0007] A kind of counterweight device for crane, including counterweight block, the bottom surface of the counterweight block is provided with expansion unit, the inside of the expansion unit is provided with limiting unit, one side of the expansion unit is provided with adjusting unit, the top surface of the adjusting unit is provided with lifting unit.

[0008] The expansion unit includes a placing box, the placing box is arranged on the bottom surface of the counterweight block, a limiting groove is formed in the inside of the placing box, a motor one is fixedly connected to the bottom surface of the placing box, a gear one is drivingly connected to the output end of the motor one, a rack is meshingly connected to one side of the gear one, an expansion plate is fixedly connected to one side of the rack, and the expansion plate is slidably connected in the inside of the limiting groove.

[0009] The further improvement in the technical scheme of the utility model lies in that one side of the gear three is in meshed connection with the limiting plate, a T-shaped rod is arranged to penetrate through the inside of the limiting plate, one end of the T-shaped rod is in sliding connection in the through hole of the gear three, and a spring is arranged on the outside of the T-shaped rod.

[0010] The above technical scheme realizes the accurate control of the limiting plate and standing, reduces the operation of manpower, and saves manpower.

[0011] The further improvement in the technical scheme of the utility model lies in that one side of the gear three is in meshed connection with the limiting plate, a T-shaped rod is arranged to penetrate through the inside of the limiting plate, one end of the T-shaped rod is in sliding connection in the through hole of the gear three, and a spring is arranged on the outside of the T-shaped rod.

[0012] The above technical scheme realizes the accurate control of the limiting plate and standing, reduces the operation of manpower, and saves manpower.

[0013] The further improvement in the technical scheme of the utility model lies in that the adjusting unit comprises a third motor, the third motor is fixedly connected to one side of the placing box, the output end of the third motor is in transmission connection with a bevel gear one, and one side of the bevel gear one is in meshed connection with a bevel gear two.

[0014] The above technical scheme realizes the accurate control of the limiting plate and standing, reduces the operation of manpower, and saves manpower.

[0015] The further improvement in the technical scheme of the utility model lies in that one side of the gear three is in meshed connection with the limiting plate, a T-shaped rod is arranged to penetrate through the inside of the limiting plate, one end of the T-shaped rod is in sliding connection in the through hole of the gear three, and a spring is arranged on the outside of the T-shaped rod.

[0016] The above technical scheme realizes the accurate control of the limiting plate and standing, reduces the operation of manpower, and saves manpower.

[0017] The further improvement in the technical scheme of the utility model lies in that the adjusting unit comprises a third motor, the third motor is fixedly connected to one side of the placing box, the output end of the third motor is in transmission connection with a bevel gear one, and one side of the bevel gear one is in meshed connection with a bevel gear two.

[0018] The above technical scheme realizes the accurate control of the limiting plate and standing, reduces the operation of manpower, and saves manpower.

[0019] The further improvement in the technical scheme of the utility model lies in that the inner side of the threaded rod is rotationally connected with a limiting box, one side of the limiting box is fixedly connected to the top surface of the placing box, a lifting box is slidably connected in the limiting box, and the inner side of the lifting box is threadedly connected with the limiting box.

[0020] By adopting the above technical scheme, the threaded rod and the lifting box are arranged, so that the installation of the counterweight block is limited.

[0021] Due to the adoption of the above technical scheme, the utility model has the following technical progress compared with the prior art:

[0022] 1. The counterweight device for the crane is convenient for expanding the number of added counterweight blocks, improves the practicality of the device, improves the safety of the crane, realizes accurate control and standing of the limiting plate through the transmission of the motor two, the gear two and the gear three, reduces the operation of manpower, and saves manpower.

[0023] 2. The counterweight device for the crane is convenient for quickly fixing the standing limiting plate, is convenient for power output of the extension length of the lifting unit through the arrangement of the motor three, the bevel gear one and the bevel gear two, and is convenient for expanding and extending the added height of the counterweight block through the arrangement of the threaded rod and the limiting box. DRAWINGS

[0024] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0025] Figure 2 It is an explosion structure schematic view of the extension unit of the utility model;

[0026] Figure 3 It is a cross-sectional structure partial schematic view of the limiting unit of the utility model;

[0027] Figure 4 It is a cross-sectional structure schematic view of the adjusting unit of the utility model;

[0028] Figure 5 It is a cross-sectional structure schematic view of the lifting unit of the utility model.

[0029] In the figure: 1, counterweight block; 2, expansion unit; 21, placing box; 22, limiting groove; 23, motor one; 24, gear one; 25, rack; 26, expansion plate; 3, limiting unit; 31, motor two; 32, gear two; 33, gear three; 34, limiting plate; 35, T-shaped rod; 36, spring; 4, adjusting unit; 41, motor three; 42, bevel gear one; 43, bevel gear two; 44, connecting rod; 45, bevel gear three; 46, bevel gear four; 5, lifting unit; 51, threaded rod; 52, limiting box; 53, lifting box. DETAILED DESCRIPTION

[0030] The utility model makes further detailed description in combination with examples below:

[0031] Example 1

[0032] As Figures 1-5 shown, the utility model provides a counterweight device for crane, including counterweight block 1, the bottom surface of counterweight block 1 is provided with expansion unit 2, the inside of expansion unit 2 is provided with limiting unit 3, one side of expansion unit 2 is provided with adjusting unit 4, the top surface of adjusting unit 4 is provided with lifting unit 5, expansion unit 2 includes placing box 21, placing box 21 is arranged at the bottom surface of counterweight block 1, the inside of placing box 21 is provided with limiting groove 22, the bottom surface of placing box 21 is fixedly connected with motor one 23, the output end of motor one 23 is drivingly connected with gear one 24, one side of gear one 24 is engagedly connected with rack 25, one side of rack 25 is fixedly connected with expansion plate 26, the both sides of expansion plate 26 are slidably connected in the inside of limiting groove 22, control motor one 23 drives gear one 24 and rack 25 to be mutually engaged, simultaneously drives expansion plate 26 to slide out from the inside of placing box 21 under the limiting of limiting groove 22.

[0033] Example 2

[0034] As Figures 1-5As shown in the embodiment 1, the utility model provides a technical scheme based on the embodiment 1: preferably, the limiting unit 3 includes motor two 31, motor two 31 fixedly connected in the inside of extension board 26, the output end of motor two 31 is transmission connection has gear two 32, one side of gear two 32 is engaged with gear three 33, the inside of gear three 33 is provided with through-hole, one side of gear three 33 is engaged with limiting plate 34, the inside of limiting plate 34 is provided with T-shaped rod 35, one end of T-shaped rod 35 is slidably connected in the through-hole of gear three 33, the outside of T-shaped rod 35 is equipped with spring 36, then T-shaped rod 35 is taken out from the inside of gear three 33, then control motor two 31 drives gear two 32 and gear three 33 and is engaged with each other, then drive limiting plate 34 and turn out from the inside of extension board 26, then drive limiting plate 34 and present perpendicular state, simultaneously T-shaped rod 35 is placed in the inside of gear three 33, the fixing of limiting plate 34 is completed through the spring 36 elasticity, then the counterweight 1 can be added to the inside of limiting plate 34, further improve the working safety of crane.

[0035] Embodiment 3

[0036] As Figures 1-5 As shown in the embodiment 1, the utility model provides a technical scheme based on the embodiment 1: preferably, the adjusting unit 4 includes motor three 41, motor three 41 fixedly connected in one side of placing box 21, the output end of motor three 41 is transmission connection has bevel gear one 42, one side of bevel gear one 42 is engaged with bevel gear two 43, one side of bevel gear two 43 is fixedly connected with connecting rod 44, one end of connecting rod 44 is fixedly connected with bevel gear three 45, one side of bevel gear three 45 is engaged with bevel gear four 46, the lifting unit 5 includes threaded rod 51, threaded rod 51 fixedly connected in one side of bevel gear four 46, the inside of threaded rod 51 is rotatably connected in the top surface inside of placing box 21, the inside of threaded rod 51 is rotatably connected with limiting box 52, one side of limiting box 52 is fixedly connected in the top surface of placing box 21, the inside of limiting box 52 is slidably connected with lifting box 53, the inside of lifting box 53 is screw connected with the inside of limiting box 52, by placing the counterweight 1 on the outside of threaded rod 51, then the limiting of counterweight 1 is completed, simultaneously control motor three 41 drives bevel gear one 42 and bevel gear two 43 and is engaged with each other, simultaneously drive the rotation of bevel gear three 45 at one end of connecting rod 44, simultaneously bevel gear three 45 and bevel gear four 46 are engaged with each other, then drive threaded rod 51 and lifting box 53 and are engaged with each other, simultaneously lifting box 53 is adjusted according to the counterweight height under the limiting of limiting box 52.

[0037] The working principle of the crane counterweight device will be described below.

[0038] As Figures 1-5As shown, by placing the counterweight 1 outside the threaded rod 51, the limiting of the counterweight 1 is completed, at the same time, the control motor three 41 drives the bevel gear one 42 and the bevel gear two 43 to mesh with each other, at the same time, the bevel gear three 45 at one end of the connecting rod 44 is driven to rotate, at the same time, the bevel gear three 45 and the bevel gear four 46 mesh with each other, thereby driving the threaded rod 51 and the lifting box 53 to mesh with each other, at the same time, the lifting box 53 is limited by the limiting box 52 and adjusted according to the counterweight adding height, at the same time, the control motor one 23 drives the gear one 24 and the rack 25 to mesh with each other, at the same time, the expansion plate 26 slides out from the inside of the placing box 21 under the limiting of the limiting groove 22, thereby taking out the T-shaped rod 35 from the inside of the gear three 33, at the same time, the control motor two 31 drives the gear two 32 and the gear three 33 to mesh with each other, thereby driving the limiting plate 34 to rotate out from the inside of the expansion plate 26, at the same time, the limiting plate 34 is in a vertical state, at the same time, the T-shaped rod 35 is placed in the inside of the gear three 33, the spring 36 is elastically acted to complete the fixation of the limiting plate 34, at the same time, the counterweight 1 can be added to the inside of the limiting plate 34, thereby further improving the working safety of the crane.

[0039] The above is a detailed description of the utility model, but some modifications or improvements can be made on the basis of the utility model, which is obvious to those skilled in the art. Therefore, without departing from the spirit of the utility model, the modifications or improvements are within the scope of the utility model.

Claims

1. Counterweight arrangement for a crane comprising a counterweight block (1), characterized in that: The bottom surface of the counterweight (1) is provided with an expansion unit (2), the inside of the expansion unit (2) is provided with a limiting unit (3), one side of the expansion unit (2) is provided with an adjusting unit (4), the top surface of the adjusting unit (4) is provided with a lifting unit (5); The expansion unit (2) comprises a placing box (21), the placing box (21) is arranged on the bottom surface of the counterweight (1), the inside of the placing box (21) is provided with a limiting groove (22), the bottom surface of the placing box (21) is fixedly connected with a motor one (23), the output end of the motor one (23) is drivingly connected with a gear one (24), one side of the gear one (24) is meshingly connected with a rack (25), one side of the rack (25) is fixedly connected with an expansion plate (26), and the two sides of the expansion plate (26) are slidingly connected in the inside of the limiting groove (22).

2. A counterweight device for a crane according to claim 1, characterized in that: The limiting unit (3) comprises a motor two (31), the motor two (31) is fixedly connected in the inside of the expansion plate (26), the output end of the motor two (31) is drivingly connected with a gear two (32), one side of the gear two (32) is meshingly connected with a gear three (33), and the inside of the gear three (33) is provided with a through hole.

3. A counterweight device for a crane according to claim 2, characterized in that: One side of the gear three (33) is meshingly connected with a limiting plate (34), the inside of the limiting plate (34) is penetrated through with a T-shaped rod (35), one end of the T-shaped rod (35) is slidingly connected in the through hole of the gear three (33), and the outside of the T-shaped rod (35) is sleeved with a spring (36).

4. The counterweight device for a crane according to claim 1, characterized by: The adjusting unit (4) comprises a motor three (41), the motor three (41) is fixedly connected on one side of the placing box (21), the output end of the motor three (41) is drivingly connected with a bevel gear one (42), one side of the bevel gear one (42) is meshingly connected with a bevel gear two (43).

5. A counterweight device for a crane according to claim 4, characterized in that: One side of the bevel gear two (43) is fixedly connected with a connecting rod (44), one end of the connecting rod (44) is fixedly connected with a bevel gear three (45), one side of the bevel gear three (45) is meshingly connected with a bevel gear four (46).

6. The counterweight device for a crane according to claim 1, characterized by: The lifting unit (5) comprises a threaded rod (51), the threaded rod (51) is fixedly connected on one side of the bevel gear four (46), and the inside of the threaded rod (51) is rotatably connected in the inside of the top surface of the placing box (21).

7. A counterweight arrangement according to claim 6, characterized in that: The inside of the threaded rod (51) is rotatably connected with a limiting box (52), one side of the limiting box (52) is fixedly connected on the top surface of the placing box (21), the inside of the limiting box (52) is slidingly connected with a lifting box (53), and the inside of the lifting box (53) is threadedly connected with the inside of the limiting box (52).

Images