Telescopic constructional engineering template dismounting crowbar with supporting points

Abstract

The utility model discloses a telescopic constructional engineering template dismounting crowbar with a supporting point, which comprises a flat head, the bottom of the flat head is fixedly connected with an upper bar body, the bottom of the upper bar body is fixedly connected with a connecting rod, the surface of the connecting rod is movably sleeved with a lower bar body, the surface of the lower bar body is provided with a stop piece, and the stop piece is fixedly connected with the flat head. The stop piece comprises a shell, the shell is fixedly connected to the surface of the lower stick body in a sleeving mode, a square ring is slidably connected to the inner wall of the shell, a stop block is fixedly connected to the side face of the square ring, a stop groove is formed in the surface of the connecting rod, and the side face of the stop block sequentially penetrates through the shell and the lower stick body and is movably connected with the inner wall of the stop groove. According to the device, the effects that the crowbar is stretched out and drawn back to adapt to different use requirements are achieved, and the problem that when a common crowbar for disassembling the constructional engineering formwork is used, the crowbar is not provided with a telescopic structure to adjust the length of the crowbar, and different use requirements are difficult to meet is solved.

Description

Technical Field

[0001] This utility model belongs to the field of building engineering formwork technology, specifically relating to a retractable pry bar for dismantling building engineering formwork with self-supporting points. Background Technology

[0002] Formwork in construction engineering is a temporary support structure. It is made according to design requirements to shape concrete structures and components in the specified positions and geometric dimensions, maintain their correct positions, and bear the self-weight of the formwork and the external loads acting on it.

[0003] Commonly used crowbars for dismantling formwork in construction projects involve inserting the flat end of the crowbar between the formwork and the ceiling, and then using the crowbar to pry the formwork apart. However, the length of the crowbar is fixed. Using a longer crowbar makes it inconvenient to carry, while using a shorter crowbar makes dismantling the formwork more difficult and lacks a point of leverage, making formwork removal quite strenuous.

[0004] This utility model provides a retractable crowbar for dismantling construction engineering templates with a built-in fulcrum, which is convenient and labor-saving. Utility Model Content

[0005] The purpose of this invention is to propose a retractable crowbar with built-in support points for dismantling building formwork, in order to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a retractable, self-supporting pry bar for dismantling construction formwork, comprising a flat head, an upper rod body fixedly connected to the bottom of the flat head, a connecting rod fixedly connected to the bottom of the upper rod body, a lower rod body movably sleeved on the surface of the connecting rod, a stop member provided on the surface of the lower rod body, the stop member comprising a housing, the housing fixedly sleeved on the surface of the lower rod body, a square ring slidably connected to the inner wall of the housing, a stop block fixedly connected to the side of the square ring, a stop groove formed on the surface of the connecting rod, the side of the stop block sequentially penetrating the housing and the lower rod body and movably connected to the inner wall of the stop groove, a rotating shaft movably connected to the side of the housing, a dial fixedly connected to the end of the rotating shaft, an eccentric disc fixedly sleeved on the surface of the rotating shaft, and the surface of the eccentric disc movably connected to the inner wall of the square ring.

[0007] Furthermore, a reinforcing rib is fixedly connected to the bottom of the flat head, and the reinforcing rib is fixedly connected to the surface of the upper rod body.

[0008] Furthermore, a bracket is fixedly fitted onto the surface of the upper rod, and a columnar block is fixedly connected to the top of the bracket. There are two columnar blocks, and the opposite faces of the two columnar blocks are fixedly connected to the two sides of the connecting block, respectively.

[0009] Furthermore, the surface of the bracket is fixedly connected with two diagonal braces.

[0010] Furthermore, the inner wall of the square ring near the lower rod has a curved surface that matches the shape of the eccentric disc.

[0011] Furthermore, a limiting block is fixedly connected to the inner wall of the lower rod, a limiting groove is formed on the surface of the connecting rod, and the surface of the limiting block is movably connected to the inner wall of the limiting groove.

[0012] Furthermore, a positioning block is fixedly connected to the surface of the housing, and a movable block is fixedly connected to the surface of the rotating shaft, with the bottom of the movable block movably connected to the top of the positioning block.

[0013] Compared with the prior art, the beneficial effects achieved by this utility model are: This utility model,

[0014] (1) By setting up a connecting rod, lower rod body, stop block and eccentric plate, when the crowbar needs to be extended during use, the dial is rotated to make the eccentric plate drive the stop block to separate from the stop groove, so that the lower rod body can be moved down. The lower rod body moves down along the surface of the connecting rod to increase the length of the crowbar. After the length is increased to a suitable length, the dial is rotated in the opposite direction to make the stop block insert into the corresponding stop groove, so that the length of the crowbar can be fixed. The increased length of the crowbar makes the dismantling of the template easier. When carrying, the lower rod body is moved up to shorten the length of the crowbar after the stop block is separated from the stop groove by rotating the dial, making it easier to carry. The connecting rod, lower rod body and stop part form a telescopic structure, which achieves the effect of telescopic crowbar to adapt to different usage needs, so as to solve the problem that the crowbar used for dismantling templates in common construction projects does not have a telescopic structure to adjust its own length, making it difficult to meet different usage needs.

[0015] (2) By setting up brackets and column blocks, when using a crowbar to pry the template, the two column blocks generate stable fulcrums, making the crowbar pry the template more stably. The column blocks are far from the left end of the flat head, so the crowbar only needs to rotate a small angle to make the left end of the flat head rotate a large distance, so that the template can be better separated from the ceiling and the template disassembly efficiency can be improved. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the upper part of the rod of this utility model;

[0019] Figure 3 This is an enlarged view of the structure at the eccentric disk position of this utility model;

[0020] Figure 4 This is a left sectional view of the pivot position of this utility model;

[0021] Figure 5 This is a cross-sectional view of the movable block position of this utility model.

[0022] In the diagram: 1. Flat head; 2. Upper rod body; 3. Connecting rod; 4. Lower rod body; 5. Stop component; 501. Housing; 502. Square ring; 503. Stop block; 504. Stop groove; 505. Rotating shaft; 506. Eccentric disc; 507. Dial plate; 6. Reinforcing rib; 7. Bracket; 8. Columnar block; 9. Connecting block; 10. Diagonal rod; 11. Limiting block; 12. Limiting groove; 13. Positioning block; 14. Movable block. Detailed Implementation

[0023] The following detailed, non-limiting description of the present invention, in conjunction with preferred embodiments and accompanying drawings, is provided. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] Please see Figure 1-5This utility model provides a technical solution: a retractable crowbar for dismantling construction formwork with self-supporting points, including a flat head 1. An upper rod body 2 is fixedly connected to the bottom of the flat head 1. A connecting rod 3 is fixedly connected to the bottom of the upper rod body 2. A lower rod body 4 is movably sleeved on the surface of the connecting rod 3. The central axes of the lower rod body 4 and the connecting rod 3 coincide with the central axis of the upper rod body 2. A stop member 5 is provided on the surface of the lower rod body 4. The stop member 5, the lower rod body 4, and the connecting rod 3 together form a telescopic structure to adjust the length of the crowbar. The stop member 5 includes a housing 501, which is fixedly sleeved on the surface of the lower rod body 4. A square ring 502 is slidably connected to the inner wall of the housing 501. A stop block 503 is fixedly connected to the side of the square ring 502. There are two stop blocks 503, which are inserted simultaneously into the stop position. In the groove 504, the lower rod body 4 is more firmly and stably secured. The surface of the connecting rod 3 is provided with a stop groove 504, which is vertically opened along the surface of the connecting rod 3. There are multiple stop grooves 504. The length of the pry bar changes when the stop block 503 is inserted into the stop groove 504 at different positions. The side of the stop block 503 passes through the housing 501 and the lower rod body 4 in sequence and is movably connected to the inner wall of the stop groove 504. The side of the housing 501 is movably connected to the rotating shaft 505. The rotating shaft 505 is movably connected to the housing 501 through the bearing. The end of the rotating shaft 505 is fixedly connected to the dial 507. The dial 507 facilitates the rotation of the rotating shaft 505 and the eccentric disk 506. The surface of the rotating shaft 505 is fixedly sleeved with the eccentric disk 506. The surface of the eccentric disk 506 is movably connected to the inner wall of the square ring 502.

[0025] Specifically, the bottom of the flat head 1 is fixedly connected to a reinforcing rib 6, which is fixedly connected to the surface of the upper rod body 2.

[0026] In this embodiment, the reinforcing rib 6 is fixed between the flat head 1 and the upper rod body 2, which improves the connection strength between the flat head 1 and the lower rod body 4 and effectively prevents the flat head 1 from deforming.

[0027] Specifically, a bracket 7 is fixedly sleeved on the surface of the upper rod body 2, and a columnar block 8 is fixedly connected to the top of the bracket 7. There are two columnar blocks 8, and the opposite sides of the two columnar blocks 8 are fixedly connected to the two sides of the connecting block 9 respectively.

[0028] In this embodiment, the bracket 7 is fixed to the upper rod body 2, and the columnar block 8 is fixed to the top of the bracket 7. When using a pry bar to pry the template, after inserting the left end of the flat head 1 between the template and the ceiling, the lower rod body 4 is rotated to make the columnar block 8 contact the top of the ceiling. The two columnar blocks 8 create a stable fulcrum, allowing the pry bar to pry the template more stably. At the same time, the columnar block 8 is located on the right side of the flat head 1, and the distance between the columnar block 8 and the left end of the flat head 1 is relatively far. The pry bar only needs to rotate a small angle to make the left end of the flat head 1 rotate a large distance, so that the template can be better separated from the ceiling and the template disassembly efficiency can be improved.

[0029] Specifically, two diagonal braces 10 are fixedly connected to the surface of the bracket 7.

[0030] In this embodiment, two diagonal braces 10 are fixed at the bend of the bracket 7 to improve the structural strength of the bend on the bracket 7 and prevent deformation at the bend.

[0031] Specifically, the inner wall of the square ring 502 has a curved surface on the side near the lower rod 4 that matches the shape of the eccentric disc 506.

[0032] In this embodiment, the surface of the eccentric disk 506 is in contact with the curved surface on the left side of the inner wall of the square ring 502 to prevent the eccentric disk 506 from rotating at will, so that the eccentric disk 506 can squeeze the square ring 502 more stably and prevent the stop block 503 from separating from the stop groove 504.

[0033] Specifically, a limiting block 11 is fixedly connected to the inner wall of the lower rod body 4, and a limiting groove 12 is opened on the surface of the connecting rod 3. The surface of the limiting block 11 is movably connected to the inner wall of the limiting groove 12.

[0034] In this embodiment, the limiting block 11 is fixed in the lower rod body 4. When the lower rod body 4 moves, it drives the limiting block 11 to move along the inner wall of the limiting groove 12. The limiting groove 12 limits the lower rod body 4 through the limiting block 11 to prevent the lower rod body 4 from separating from the connecting rod 3.

[0035] Specifically, a positioning block 13 is fixedly connected to the surface of the housing 501, and a movable block 14 is fixedly connected to the surface of the rotating shaft 505. The bottom of the movable block 14 is movably connected to the top of the positioning block 13.

[0036] In this embodiment, when the rotating shaft 505 rotates, it causes the movable block 14 to fit against the top of the right positioning block 13. When the rotating shaft 505 rotates in the opposite direction, it causes the movable block 14 to fit against the top of the left positioning block 13. Through the two positioning blocks 13, the maximum angle of a single rotation of the rotating shaft 505 is 180 degrees. When the movable block 14 fits against the top of the right positioning block 13, the eccentric disk 506 presses against the right side of the inner wall of the square ring 502. When the movable block 14 fits against the top of the left positioning block 13, the eccentric disk 506 presses against the left side of the inner wall of the square ring 502.

[0037] The working principle and usage process of this utility model are as follows: When the pry bar needs to be extended, rotate the dial 507 to rotate the shaft 505. The shaft 505 drives the movable block 14 to engage with the top of the right-side positioning block 13. The shaft 505 also drives the eccentric disk 506 to rotate. The eccentric disk 506 presses against the right side of the inner wall of the square ring 502, causing the square ring 502 to move to the right along the inner wall of the housing 501. At the same time, it causes the stop block 503 to separate from the stop groove 504. After separation, the lower pry bar 4 can be moved downwards. The lower pry bar 4 moves downwards along the surface of the connecting rod 3, increasing the length of the pry bar and increasing its effectiveness. After reaching the appropriate length, rotate dial 507 in the reverse direction. Dial 507 drives shaft 505 to rotate in the reverse direction. When shaft 505 rotates in the reverse direction, it causes movable block 14 to engage with the top of left positioning block 13. Shaft 505 drives eccentric disc 506 to rotate in the reverse direction, causing eccentric disc 506 to press against the left side of the inner wall of square ring 502. This causes square ring 502 to drive stop block 503 to insert into the corresponding stop groove 504, locking the lower rod body 4 onto connecting rod 3, thereby fixing the length of the pry bar. By increasing the length of the pry bar, disassembling the template becomes easier. When carrying the pry bar, rotate dial 507. After the disc 507 separates the stop block 503 from the stop groove 504, the lower rod 4 moves upward. The lower rod 4 moves upward along the surface of the connecting rod 3, shortening the length of the pry bar. When the bottom of the upper rod 2 is in contact with the top of the lower rod 4, the disc 507 is rotated in the opposite direction to insert the stop block 503 into the stop groove 504, locking the lower rod 4 and shortening the length of the pry bar for easy carrying. The bracket 7 is fixed on the upper rod 2, and the columnar block 8 is fixed at the top of the bracket 7. When using the pry bar to pry the template, after inserting the left end of the flat head 1 between the template and the ceiling, the lower rod 4 is rotated to make the columnar block 8 and the template... The top of the ceiling contacts the template, and two columnar blocks 8 create a stable fulcrum, allowing the pry bar to pry the template more stably. At the same time, the columnar blocks 8 are located on the right side of the flat head 1, and the distance between the columnar blocks 8 and the left end of the flat head 1 is relatively far. The pry bar only needs to rotate a small angle to make the left end of the flat head 1 rotate a large distance, so that the template can be better separated from the ceiling and the template disassembly efficiency is improved. The reinforcing rib 6 is fixed between the flat head 1 and the upper rod body 2 to improve the connection strength between the flat head 1 and the lower rod body 4. The diagonal bar 10 is fixed on the bracket 7 to improve the structural strength of the bracket 7 and effectively prevent the bracket 7 from deforming.

[0038] In summary, this telescopic, self-supporting crowbar for dismantling building formwork solves the problem that common crowbars for dismantling building formwork lack a telescopic structure to adjust their length, making it difficult to meet different usage needs. This is achieved by setting up a connecting rod 3, a lower crowbar body 4, a stop block 503, and an eccentric disc 506.

[0039] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A retractable, self-supporting crowbar for dismantling construction formwork, comprising a flat head (1), characterized in that: The bottom of the flat head (1) is fixedly connected to an upper rod body (2), and the bottom of the upper rod body (2) is fixedly connected to a connecting rod (3). The surface of the connecting rod (3) is movably sleeved with a lower rod body (4). The surface of the lower rod body (4) is provided with a stop member (5). The stop member (5) includes a housing (501). The housing (501) is fixedly sleeved on the surface of the lower rod body (4). The inner wall of the housing (501) is slidably connected to a square ring (502). The side of the square ring (502) is fixedly connected to a stop block (50). 3) The surface of the connecting rod (3) is provided with a stop groove (504). The side of the stop block (503) passes through the housing (501) and the lower rod body (4) in sequence and is movably connected to the inner wall of the stop groove (504). The side of the housing (501) is movably connected to a rotating shaft (505). The end of the rotating shaft (505) is fixedly connected to a dial (507). The surface of the rotating shaft (505) is fixedly sleeved with an eccentric disk (506). The surface of the eccentric disk (506) is movably connected to the inner wall of the square ring (502).

2. The retractable, self-supporting crowbar for dismantling building formwork according to claim 1, characterized in that: The bottom of the flat head (1) is fixedly connected to a reinforcing rib (6), which is fixedly connected to the surface of the upper rod body (2).

3. The retractable, self-supporting crowbar for dismantling building formwork according to claim 1, characterized in that: A bracket (7) is fixedly sleeved on the surface of the upper rod (2), and a columnar block (8) is fixedly connected to the top of the bracket (7). There are two columnar blocks (8), and the opposite surfaces of the two columnar blocks (8) are fixedly connected to the two sides of the connecting block (9).

4. A retractable crowbar with self-supporting points for dismantling building formwork according to claim 3, characterized in that: The surface of the bracket (7) is fixedly connected with two diagonal rods (10).

5. A retractable crowbar with self-supporting points for dismantling building formwork according to claim 1, characterized in that: The inner wall of the square ring (502) near the lower rod (4) is provided with a curved surface that matches the shape of the eccentric disc (506).

6. A retractable crowbar with self-supporting points for dismantling building formwork according to claim 1, characterized in that: The inner wall of the lower rod (4) is fixedly connected to a limiting block (11), and a limiting groove (12) is opened on the surface of the connecting rod (3). The surface of the limiting block (11) is movably connected to the inner wall of the limiting groove (12).

7. A retractable crowbar with self-supporting points for dismantling building formwork according to claim 1, characterized in that: A positioning block (13) is fixedly connected to the surface of the housing (501), and a movable block (14) is fixedly connected to the surface of the rotating shaft (505). The bottom of the movable block (14) is movably connected to the top of the positioning block (13).

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