Lifting block

Abstract

The utility model relates to the technical field of lifting blocks, in particular to a lifting block which comprises a square block, the outer wall of the square block is connected with an overlapping structure, the left side and the right side of the top of the overlapping structure are respectively provided with a first notch, the bottom of the overlapping structure is provided with a leveling structure, and the left side and the right side of the top of the leveling structure are respectively provided with a second notch. A through opening is machined in the inner wall of the overlapping structure, an inserting plate in the overlapping structure is attached to the bottom of a groove plate, the inserting plate is upwards matched with the groove plate with force to lift the outer sleeves, then the square block is upwards lifted, then a straight plate at the bottom of the second lifting block is connected with the inner wall of a first notch in the top of the first lifting block in an inserted mode, and at the moment, the two outer sleeves can be completely attached; and the contact area of the overlapped hoisting blocks is increased, so that the overlapped hoisting blocks are stable, the use stability of the hoisting blocks is improved, and the dangerousness of the hoisting blocks in use is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting blocks, in particular to a lifting block. Background Art

[0002] The lifting block, also known as the counterweight block, is an important part of a crane that balances the crane by increasing or decreasing the additional load.

[0003] For example, a counterweight block with the authorization announcement number of "CN104003267A", the second protrusion is a hemispherical hollow protrusion, a taking part is arranged on the second protrusion, the taking part is a long waist hole, and 4 arc-shaped recessed parts are arranged on the upper edge of the long waist hole. Through the improvement of the counterweight block structure, there is a gap between the lower end face of the counterweight block and the ground or other supports, and a taking part is arranged on the upper end face of the counterweight block, which is convenient for taking. However, during the use of the lifting block, the handle at the top will reduce the contact area when the lifting blocks are stacked, which will reduce the placement stability of the lifting blocks. At the same time, the single-hole handle at the top of the lifting block is not convenient to use due to its large weight, and the stability cannot be guaranteed when the lifting block is lifted, reducing the use stability of the lifting block and increasing the danger during the use of the lifting block. Content of the Utility Model

[0004] The purpose of the utility model is to solve the problem of reducing the use stability of the lifting block and increasing the danger during the use of the lifting block, and to provide a lifting block.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] Design a lifting block, including a square block, an overlapping structure is connected to the outer wall of the square block, first notch openings are respectively processed on the left and right sides at the top of the overlapping structure, a leveling structure is arranged at the bottom of the overlapping structure, second notch openings are respectively processed on the left and right sides at the top of the leveling structure, and a through opening is processed on the inner wall of the overlapping structure.

[0007] Preferably, the overlapping structure includes an outer sleeve and a straight plate, the inner wall of the outer sleeve is fixedly connected to the outer wall of the square block, the left and right sides at the bottom of the outer sleeve are respectively fixedly connected to the top of the straight plate, and groove plates are respectively fixedly connected to the left and right sides of the outer sleeve.

[0008] Preferably, first notch openings are respectively processed on the left and right sides at the top of the outer sleeve.

[0009] Preferably, a through opening is processed on the inner wall of the groove plate.

[0010] Preferably, the leveling structure includes a bottom plate and a screw rod, the top of the bottom plate is adjacent to the bottom of the outer sleeve, the left and right sides on the front surface of the bottom plate are respectively in threaded connection with the outer wall of the screw rod, and a handle is fixedly connected to the front surface of the screw rod.

[0011] Preferably, second notches are respectively machined on the left and right sides of the top of the bottom plate.

[0012] A lifting block proposed by the present utility model has the beneficial effects that: through the bottom of the insertion plate in the overlapping structure being attached to the bottom of the groove plate, when the insertion plate exerts an upward force in cooperation with the groove plate, the outer sleeve is lifted, thereby lifting the square block upward. Subsequently, the straight plate at the bottom of the second lifting block is inserted into the inner wall of the first notch at the top of the first lifting block. At this time, the two outer sleeves will be completely attached, increasing the contact area of the overlapping lifting blocks, making the overlapping lifting blocks stable, improving the use stability of the lifting blocks, and reducing the danger in the use of the lifting blocks. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] Figure 2 is Figure 1 a schematic structural diagram of A in

[0015] Figure 3 is Figure 1 a schematic structural diagram of the connection relationship among the straight plate, the screw rod and the handle in

[0016] Figure 4 is Figure 1 a schematic structural diagram of the square frame structure in

[0017] In the figure: 1, square block; 2, overlapping structure; 201, outer sleeve; 202, groove plate; 203, straight plate; 3, leveling structure; 301, bottom plate; 302, screw rod; 303, handle; 4, first notch; 5, through hole; 6, second notch; 7, square frame. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The present utility model will be further described below with reference to the accompanying drawings:

[0019] Embodiment 1:

[0020] Please refer to Figures 1-4 : In this embodiment, a lifting block includes a square block 1. An overlapping structure 2 is connected to the outer wall of the square block 1. First notches 4 are respectively machined on the left and right sides of the top of the overlapping structure 2. A leveling structure 3 is provided at the bottom of the overlapping structure 2. Second notches 6 are respectively machined on the left and right sides of the top of the leveling structure 3. A through hole 5 is machined on the inner wall of the overlapping structure 2. The through hole 5 can be inserted with an external insertion rod, and the cooperation between the insertion rod and the through hole 5 facilitates the overall lifting.

[0021] The overlapping structure 2 includes an outer sleeve 201 and a straight plate 203. The inner wall of the outer sleeve 201 is fixedly connected to the outer wall of the square block 1. The left and right sides of the bottom of the outer sleeve 201 are respectively fixedly connected to the top of the straight plate 203. The straight plate 203 can be inserted into the first notch 4 to complete the overlapping of the two outer sleeves 201. The left and right sides of the outer sleeve 201 are respectively fixedly connected with groove plates 202. The left and right sides of the top of the outer sleeve 201 are respectively processed with the first notch 4. The inner wall of the groove plate 202 is processed with a through port 5;

[0022] By making the insertion plate fit with the bottom of the groove plate 202 in the overlapping structure 2, and applying an upward force on the insertion plate to cooperate with the groove plate 202 to lift the outer sleeve 201, thereby lifting the square block 1 upward. Subsequently, the straight plate 203 at the bottom of the second lifting block is inserted into the inner wall of the first notch 4 at the top of the first lifting block. At this time, the two outer sleeves 201 will be completely fitted, increasing the contact area of the overlapping lifting blocks, making the overlapping lifting blocks stable, improving the use stability of the lifting blocks, and reducing the danger in the use of the lifting blocks.

[0023] The leveling structure 3 includes a bottom plate 301 and a screw 302. The top of the bottom plate 301 is adjacent to the bottom of the outer sleeve 201. The left and right sides of the front of the bottom plate 301 are respectively threadedly connected to the outer wall of the screw 302. The screw 302 rotates forward and backward through the bottom plate 301 under force. A handle 303 is fixedly connected to the front of the screw 302. The handle 303 facilitates driving the screw 302 to rotate. The left and right sides of the top of the bottom plate 301 are respectively processed with a second notch 6. The second groove plate 6 can be inserted into the outer wall of the straight plate 203.

[0024] Working principle:

[0025] Lifting block placement:

[0026] Insert the second notch 6 at the top of the bottom plate 301 into the outer wall of the straight plate 203 until the top of the bottom plate 301 fits with the bottom of the outer sleeve 201. Subsequently, make the handle 303 drive the screw 302 to rotate backward through the bottom plate 301, and insert the rear of the outer wall of the screw 302 into the circular opening on the front of the straight plate 203 to complete the position fixation of the bottom plate 301. At this time, the bottom area of the outer sleeve 201 increases, and the contact surface can be increased to ensure stability when placing the lifting block.

[0027] Overlapping placement of lifting blocks:

[0028] Make the insertion plate fit with the bottom of the groove plate 202. Apply an upward force on the insertion plate to cooperate with the groove plate 202 to lift the outer sleeve 201, thereby lifting the square block 1 upward. Subsequently, insert the straight plate 203 at the bottom of the second lifting block into the inner wall of the first notch 4 at the top of the first lifting block. At this time, the two outer sleeves 201 will be completely fitted, making the overlapping lifting blocks stable. It is also possible to insert the insertion rod into the through port 5 to lift the groove plate 202 upward.

[0029] Embodiment 2:

[0030] Please refer to Figures 1-4 : In this embodiment, a lifting block further includes a square frame 7, and the outer wall of the square frame 7 is fixedly connected to the inner wall of the square block 1.

[0031] Working principle:

[0032] When the weight of the lifting block cannot be increased any further and the balancing weight is insufficient, steel plates can be inserted into the inner wall of the square frame 7 to increase the weight in the square block 1, or materials with a greater density can be selected and inserted into the square frame 7.

[0033] Although the present utility model has been illustrated and described with reference to the preferred embodiments, those of ordinary skill in the art should understand that various changes in form and detail may be made within the scope of the claims.

Claims

1. A lifting block, comprising a block (1), characterized in that: The outer wall of the block (1) is connected to an overlapping structure (2), and first notches (4) are processed on the left and right sides of the top of the overlapping structure (2), and a leveling structure (3) is provided at the bottom of the overlapping structure (2), and second notches (6) are processed on the left and right sides of the top of the leveling structure (3), and a through opening (5) is processed on the inner wall of the overlapping structure (2).

2. A lifting block according to claim 1, characterized in that: The overlapping structure (2) comprises an outer sleeve (201) and a straight plate (203); the inner wall of the outer sleeve (201) is fixedly connected to the outer wall of the block (1); the left and right sides of the bottom of the outer sleeve (201) are respectively fixedly connected to the top of the straight plate (203); and the left and right sides of the outer sleeve (201) are respectively fixedly connected to a groove plate (202).

3. A lifting block according to claim 2, characterized in that: The top left and right sides of the outer sleeve (201) are respectively processed with first notches (4).

4. A lifting block according to claim 2, characterized in that: The inner wall of the groove plate (202) is processed with a through opening (5).

5. A lifting block according to claim 1, characterized in that: The leveling structure (3) comprises a base plate (301) and a screw rod (302), the top of the base plate (301) is adjacent to the bottom of the outer sleeve (201), the left and right sides of the front side of the base plate (301) are respectively threadedly connected to the outer wall of the screw rod (302), and the front side of the screw rod (302) is fixedly connected with a handle (303).

6. A lifting block according to claim 5, characterized in that: Second notches (6) are respectively formed on the left and right sides of the top of the bottom plate (301).

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