A safety bracket for use in the construction field

Abstract

The present invention provides a safety bracket for use in the construction field, which relates to the technical field of building construction, comprising: a base, an extension seat being slidably provided inside the base; a telescopic oil cylinder A being fixedly provided between the front ends of both sides of the base and the rear ends of both sides of the extension seat; two sets of convex edges being integrally provided on both sides of the top of the base; a main bracket, the main bracket being hingedly provided on the front side of the convex edge, and the main bracket being able to rotate 0-90 degrees; telescopic oil cylinder A, telescopic oil cylinder B and telescopic oil cylinder C being provided, providing a function of quickly adjusting and changing the shape, using a gear pump to transport the hydraulic oil in the telescopic oil cylinder A to the telescopic oil cylinder B, and then extending the telescopic oil cylinder B to rotate and lift the main bracket forward, and using the telescopic oil cylinder C to push the slider to open the U-shaped bracket forward, so that the bottom of the U-shaped bracket is in contact with the top of the base, completing automatic extension, and solving the problem that the existing bracket is inconvenient to quickly adjust and change the shape when it needs to be moved and stored.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and in particular to a safety bracket used in the construction field. Background Art

[0002] During construction, supports are needed to assist in construction. Workers need to carry out construction in places that are out of reach of workers. Workers need to carry tools and materials to climb, which is dangerous. Therefore, the stability of the supports needs to be ensured.

[0003] The safety brackets currently used have the following disadvantages:

[0004] 1. Existing safety brackets are mainly fixed structures, which makes it difficult to quickly adjust and change the shape when moving and storing, and to quickly expand and deploy when in use;

[0005] 2. The existing safety bracket is mainly used on one side, which is inconvenient to construct in different positions according to work needs;

[0006] 3. Lack of the ability to control lifting tools and materials at any height. Summary of the Invention

[0007] In view of this, the present invention provides a safety bracket for use in the construction field, which has a transmission sleeve. The transmission sleeve is slidably connected to the hexagonal shaft and can provide a transmission effect during the sliding process.

[0008] The present invention provides a safety bracket for use in the construction field, specifically comprising: a base, an extension seat being slidably provided inside the base; a telescopic oil cylinder A being fixedly provided between the front ends of both sides of the base and the rear ends of both sides of the extension seat; two sets of convex edges being integrally provided on both sides of the top of the base; a main bracket, the main bracket being hingedly provided on the front side of the convex edge, and the main bracket being able to rotate 0-90 degrees; a side connecting rod, the side connecting rod being hingedly provided on the front side of the main bracket; a U-shaped bracket, the U-shaped bracket being hingedly provided on the front end of the side connecting rod; a hexagonal shaft, the hexagonal shaft being rotatably provided on the left end of the rear side of the U-shaped bracket; a winding shaft, the winding shaft being rotatably provided on the upper rear side of the U-shaped bracket; a T-shaped transmission frame, a transmission sleeve being rotatably provided on one side of the T-shaped transmission frame, and the transmission sleeve being slidably provided on the outside of the hexagonal shaft; a positioning seat, the number of the positioning seats being set to two groups, and the two sets of positioning seats being fixedly provided on both sides of the front end of the base; a gear pump, the gear pump being fixedly provided on the right side of the base; and a ball valve, the ball valve being connected and provided at the front end of the gear pump.

[0009] Optionally, the base also includes: an intermediate rod, an intermediate rod is fixedly arranged in the middle of the convex edges on both sides, a telescopic cylinder B is fixedly arranged at the front end of the intermediate rod, the telescopic end of the telescopic cylinder B cooperates with the guide rail to slide on the top of the base, and the telescopic end of the telescopic cylinder B is hingedly provided with pulling rods on both sides.

[0010] Optionally, the main bracket includes: a telescopic cylinder C, which is hingedly provided on the top of both sides of the main bracket; a control piston, which is fixedly provided on the right side of the main bracket; the telescopic cylinder C and the control piston are connected by an air pipe; the volume of the telescopic cylinder C and the control piston is consistent, and the telescopic cylinder C extends when the control piston contracts; a screw, which is rotated on the right side of the main bracket; the telescopic end of the control piston is threadedly connected to the screw; a hand crank shaft, which is rotated on the right side of the main bracket, and the hand crank shaft and the screw are connected by a bevel gear transmission.

[0011] Optionally, the side links include: side pedals, and side pedals are fixedly provided on adjacent edges of the side links on both sides; each group of side links is parallel to each other, and the main bracket and the U-shaped bracket are parallel.

[0012] Optionally, the U-shaped bracket includes: sliders, sliders are slidingly provided on the outside of both sides of the U-shaped bracket, and the telescopic end of the telescopic cylinder C is hingedly connected to the slider; gas telescopic rods A are fixedly provided on the upper ends of adjacent surfaces on both sides of the U-shaped bracket, and the telescopic ends of the gas telescopic rods A are fixedly connected to the bottom of the slider; when the gas telescopic rods A contract, the gas telescopic rods B extend; a spring is provided on the outside of the gas telescopic rods A; gas telescopic rods B, the bottoms of the U-shaped brackets on both sides turn toward the middle, the gas telescopic rods B are fixedly provided at the turning points, and the telescopic ends of the gas telescopic rods B are fixedly provided with two sets of connecting pins.

[0013] Optionally, the gas telescopic rod B and the gas telescopic rod A are provided with an air pipe for gas communication; when the gas telescopic rod A contracts, the gas telescopic rod A extends.

[0014] Optionally, the hexagonal shaft and the winding shaft are connected by a bevel gear transmission; a winding roller is provided on the outside of the winding shaft, a pull wire is provided on the outside of the winding roller, and a hook is fixedly provided on one end of the pull wire.

[0015] Optionally, the T-shaped transmission frame also includes: a rotating drum, a rotating drum is integrally provided on one side of the T-shaped transmission frame; a control shaft, a control shaft is rotatably provided in the rotating drum, and the control shaft and the transmission sleeve are provided with a bevel gear transmission connection; a handle, a handle is integrally provided on the bottom of the rotating drum; an insertion rod, the insertion rod is an L-shaped structure, and a spring rod is integrally provided on the upper side of one side of the insertion rod, the spring rod is sleeved with a spring and passes through the handle; a locking plug, one end of the insertion rod passes through the T-shaped transmission frame and is fixed with a locking plug; the locking plug fits the hexagonal shaft.

[0016] Optionally, two groups of through holes are opened in the middle of the positioning seat; when the bottom of the U-shaped bracket is attached to the top of the base, the connecting pins can be aligned with the through holes of the positioning seat.

[0017] Optionally, the gear pump is connected to the ball valve, and a pipeline is provided to connect the gear pump and the telescopic cylinder B; the ball valve is connected to the telescopic cylinder A; the volume of the telescopic cylinder A is consistent with the volume of the telescopic cylinder B. When the ball valve is open, the telescopic cylinder A contracts and the telescopic cylinder B extends.

[0018] The beneficial effects of this application are as follows:

[0019] 1. Telescopic cylinders A, B, and C are set up to provide the function of rapid adjustment and change of shape. The hydraulic oil in telescopic cylinder A is transported to telescopic cylinder B by a gear pump. Then, telescopic cylinder B is extended to rotate the main bracket forward and raise it. The slider is pushed by telescopic cylinder C to open the U-shaped bracket forward so that the bottom of the U-shaped bracket fits the top of the base, completing automatic extension. Then, telescopic cylinder C continues to extend to squeeze the slider downward, and the telescopic rod A contracts. The air in telescopic rod A is input into telescopic rod B to open the connecting pin, and the connecting pin is inserted into the positioning seat to achieve locking.

[0020] 2. The main bracket, side connecting rod and U-shaped bracket are set to provide the function of construction in different positions according to work needs. The main bracket, side connecting rod and U-shaped bracket constitute a semi-enclosed bracket space, which can assist climbing and make it easy for workers to turn around for construction, providing convenience for construction.

[0021] 3. A T-shaped transmission frame is set up to provide the function of controlling the lifting of tools and materials at any height. The insertion rod can be fitted into the handle to make the locking block leave the hexagonal shaft, and then the control shaft is rotated. The control shaft cooperates with the bevel gear to drive the control shaft to rotate, and the control shaft drives the hexagonal shaft to rotate. The hexagonal shaft cooperates with the bevel gear to drive the winding shaft to rotate, so as to control the hook and move the hook up and down to achieve lifting. Tools and materials are lifted, which is convenient for workers to pick up items. There is no need to frequently raise and lower the bracket, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It shows a schematic diagram of a three-dimensional structure according to an embodiment of the present invention;

[0023] Figure 2 It shows a schematic diagram of the left rear axle side structure according to an embodiment of the present invention;

[0024] Figure 3 It shows a schematic diagram of the right rear axonometric structure according to an embodiment of the present invention;

[0025] Figure 4 A partial cross-sectional structural schematic diagram according to an embodiment of the present invention is shown;

[0026] Figure 5 A schematic diagram of the three-dimensional structure of a base according to an embodiment of the present invention is shown;

[0027] Figure 6 A schematic diagram of a half-section structure of a base according to an embodiment of the present invention is shown;

[0028] Figure 7 A schematic diagram of the three-dimensional structure of a T-shaped transmission frame according to an embodiment of the present invention is shown;

[0029] Figure 8 It shows a schematic diagram of a partially enlarged structure of A according to an embodiment of the present invention;

[0030] Figure 9 It shows a schematic diagram of a partially enlarged structure of B according to an embodiment of the present invention;

[0031] Figure 10 A schematic diagram of a partially enlarged structure of C according to an embodiment of the present invention is shown.

[0032] Reference Signs List

[0033] 1. Base; 101. Extension seat; 102. Telescopic cylinder A; 103. Flange; 104. Intermediate rod; 105. Telescopic cylinder B; 106. Pull-on connecting rod; 2. Main bracket; 201. Telescopic cylinder C; 202. Control piston; 203. Lead screw; 204. Hand crank shaft; 3. Side connecting rod; 301. Side pedal; 4. U-shaped bracket; 401. Slider; 402. Pneumatic telescopic rod A; 403. Pneumatic telescopic rod B; 404. Connecting pin; 5. Hexagonal shaft; 6. Reeling shaft; 7. T-shaped transmission frame; 701. Rotating drum; 702. Transmission sleeve; 703. Control shaft; 704. Handle; 705. Insert rod; 706. Spring rod; 707. Locking plug; 8. Positioning seat; 9. Gear pump; 10. Ball valve. DETAILED DESCRIPTION

[0034] In order to make the purpose, solution and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of specific embodiments of the present invention.

[0035] Example: Please refer to Figures 1 to 10 As shown:

[0036] The present invention proposes a safety bracket for use in the construction field, comprising: a base 1, an extension seat 101 is slidingly provided inside the base 1; a telescopic oil cylinder A102 is fixedly provided between the front ends of both sides of the base 1 and the rear ends of both sides of the extension seat 101; two sets of flanges 103 are integrally provided on both sides of the top of the base 1; a main bracket 2, the main bracket 2 is hingedly provided on the front side of the flange 103, and the main bracket 2 can rotate 0-90 degrees; a side connecting rod 3, the side connecting rod 3 is hingedly provided on the front side of the main bracket 2; a U-shaped bracket 4, the U-shaped bracket 4 is hingedly provided on the front end of the side connecting rod 3; a hexagonal shaft 5, the hexagonal shaft 5 is rotatably provided at the left end of the rear side of the U-shaped bracket 4; a winding shaft 6, the winding shaft 6 is rotatable The rotation is set on the upper rear side of the U-shaped bracket 4; the T-shaped transmission frame 7, a transmission sleeve 702 is rotatably set on one side of the T-shaped transmission frame 7, and the transmission sleeve 702 is slidably set on the outside of the hexagonal shaft 5; the positioning seat 8, the number of the positioning seat 8 is set to two groups, and the two groups of positioning seats 8 are fixedly set on both sides of the front end of the base 1; the gear pump 9, the gear pump 9 is fixedly set on the right side of the base 1; the ball valve 10, the ball valve 10 is connected to the front end of the gear pump 9; when not in use, the bracket as a whole remains flat, and the base 1 carries the main bracket 2, the side connecting rod 3 and the U-shaped bracket 4 and their accessories, and universal wheels are set at the bottom of the base 1 and the extension seat 101 to carry and assist in movement.

[0037] Among them, the base 1 also includes: an intermediate rod 104, an intermediate rod 104 is fixedly arranged in the middle of the flanges 103 on both sides, a telescopic cylinder B105 is fixedly arranged at the front end of the intermediate rod 104, the telescopic end of the telescopic cylinder B105 cooperates with the guide rail to slide on the top of the base 1, and a pulling connecting rod 106 is hinged on both sides of the telescopic end of the telescopic cylinder B105.

[0038] Among them, the main bracket 2 includes: a telescopic cylinder C201, which is hingedly provided on the top of both sides of the main bracket 2; a control piston 202, which is fixedly provided on the right side of the main bracket 2; the telescopic cylinder C201 and the control piston 202 are connected by an air pipe; the volume of the telescopic cylinder C201 and the control piston 202 are consistent, and the telescopic cylinder C201 extends when the control piston 202 contracts; a screw 203, which is rotatably provided on the right side of the main bracket 2; the telescopic end of the control piston 202 is threadedly connected to the screw 203; a hand-cranked shaft 204, which is rotatably provided on the right side of the main bracket 2, and the hand-cranked shaft 204 and the screw 203 are connected by a bevel gear transmission.

[0039] The side links 3 include side pedals 301 , and adjacent edges of the side links 3 on both sides are fixedly provided with side pedals 301 ; each group of side links 3 is parallel to each other, and the main bracket 2 and the U-shaped bracket 4 are parallel.

[0040] Among them, the U-shaped bracket 4 includes: a slider 401, a slider 401 is slidingly provided on the outside of both sides of the U-shaped bracket 4, and the telescopic end of the telescopic cylinder C201 is hinged to the slider 401; a gas telescopic rod A402, a gas telescopic rod A402 is fixedly provided on the upper ends of the adjacent surfaces on both sides of the U-shaped bracket 4, and the telescopic end of the gas telescopic rod A402 is fixedly connected to the bottom of the slider 401; when the gas telescopic rod A402 contracts, the gas telescopic rod B403 extends; a spring is provided on the outside of the gas telescopic rod A402; the gas telescopic rod B403, the bottom of the U-shaped bracket 4 on both sides turns toward the middle, and the gas telescopic rod B403 is fixedly provided at the turning point, and the extension of the gas telescopic rod B403 Two sets of connecting pins 404 are fixedly provided at the retracted end; the hand-cranked shaft 204 is rotated to cooperate with the bevel gear to drive the screw 203 to rotate, and the screw 203 drives the control piston 202 to retract, and the hydraulic oil in the control piston 202 is input into the telescopic cylinder C201, and the telescopic cylinder C201 is used to push the slider 401 to push the U-shaped bracket 4 forward so that the bottom of the U-shaped bracket 4 fits the top of the base 1, and then the telescopic cylinder C201 continues to extend to squeeze the slider 401 downward, and the gas telescopic rod A402 contracts, and the air in the gas telescopic rod A402 is input into the gas telescopic rod B403 to open the connecting pin 404, and the connecting pin 404 is inserted into the positioning seat 8 to achieve locking.

[0041] Among them, the gas telescopic rod B403 and the gas telescopic rod A402 are provided with an air pipe for gas communication; when the gas telescopic rod A402 contracts, the gas telescopic rod A402 extends.

[0042] Among them, the hexagonal shaft 5 and the winding shaft 6 are connected by bevel gear transmission; a winding roller is provided on the outside of the winding shaft 6, a pull wire is provided on the outside of the winding roller, and a hook is fixed on one end of the pull wire.

[0043] Among them, the T-shaped transmission frame 7 also includes: a rotating drum 701, a rotating drum 701 is integrally provided on one side of the T-shaped transmission frame 7; a control shaft 703, a control shaft 703 is rotatably provided in the rotating drum 701, and the control shaft 703 is connected to the transmission sleeve 702 by a bevel gear transmission; a handle 704, a handle 704 is integrally provided on the bottom of the rotating drum 701; an insertion rod 705, the insertion rod 705 is an L-shaped structure, and a spring rod 706 is integrally provided on one side of the insertion rod 705, and the spring rod 706 is provided with a spring and is passed through Through the handle 704; locking plug 707, one end of the insertion rod 705 passes through the T-shaped transmission frame 7 and is fixed with a locking plug 707; the locking plug 707 fits the hexagonal shaft 5; the insertion rod 705 fits the handle 704, so that the locking plug 707 leaves the hexagonal shaft 5, and then rotates the control shaft 703, the control shaft 703 cooperates with the bevel gear to drive the control shaft 703 to rotate, the control shaft 703 drives the hexagonal shaft 5 to rotate, and the hexagonal shaft 5 cooperates with the bevel gear to drive the winding shaft 6 to rotate, thereby realizing the control of the hook and making the hook move up and down.

[0044] Among them, two groups of through holes are opened in the middle of the positioning seat 8; when the bottom of the U-shaped bracket 4 is attached to the top of the base 1, the connecting pin 404 can be aligned with the through holes of the positioning seat 8.

[0045] Among them, the gear pump 9 is connected to the ball valve 10, and the gear pump 9 is connected to the telescopic cylinder B105 through a pipeline; the ball valve 10 is connected to the telescopic cylinder A102; the volume of the telescopic cylinder A102 is consistent with the volume of the telescopic cylinder B105, and when the ball valve 10 is in the open state, the telescopic cylinder A102 contracts when the telescopic cylinder B105 extends; open the ball valve 10 to manually control the gear pump 9, and use the gear pump 9 to transport the hydraulic oil in the telescopic cylinder A102 to the telescopic cylinder B105, and then the telescopic cylinder B105 extends, rotating the main bracket 2 forward and lifting it. When the main bracket 2 is fully raised, closing the ball valve 10 can cut off the oil to provide safety protection.

[0046] Specific usage and function of this embodiment: In the present invention, when not in use, the entire bracket remains in a flat state, and the base 1 supports the main bracket 2, the side connecting rod 3, the U-shaped bracket 4 and its accessories. Universal wheels are provided at the bottom of the base 1 and the extension base 101 to support and assist in movement;

[0047] Open the ball valve 10 to manually control the gear pump 9, and use the gear pump 9 to transfer the hydraulic oil in the telescopic cylinder A102 to the telescopic cylinder B105. Then the telescopic cylinder B105 extends, rotating the main support 2 forward and raising it. When the main support 2 is fully raised, close the ball valve 10 to cut off the oil supply, providing safety protection.

[0048] The hand crank shaft 204 is rotated to cooperate with the bevel gear to drive the lead screw 203 to rotate. The lead screw 203 drives the control piston 202 to retract, and the hydraulic oil in the control piston 202 is input into the telescopic cylinder C201. The telescopic cylinder C201 is used to push the slider 401, and the U-shaped bracket 4 is stretched forward, so that the bottom of the U-shaped bracket 4 fits the top of the base 1. Then the telescopic cylinder C201 continues to stretch and squeeze the slider 401 downward, and the gas telescopic rod A402 is retracted. The air in the gas telescopic rod A402 is input into the gas telescopic rod B403 to stretch the connecting pin 404, and the connecting pin 404 is inserted into the positioning seat 8 to achieve locking.

[0049] The main support 2, the side connecting rod 3 and the U-shaped support 4 form a semi-enclosed support space, which can assist climbing and facilitate workers to turn around for construction;

[0050] The insertion rod 705 is fitted into the handle 704 to make the locking block 707 leave the hexagonal shaft 5, and then the control shaft 703 is rotated. The control shaft 703 cooperates with the bevel gear to drive the control shaft 703 to rotate, and the control shaft 703 drives the hexagonal shaft 5 to rotate. The hexagonal shaft 5 cooperates with the bevel gear to drive the winding shaft 6 to rotate, thereby controlling the hook and moving the hook up and down to achieve lifting. Tools and materials are lifted, which makes it convenient for workers to pick up items without the need for frequent up and down brackets, thereby improving safety.

Claims

1. A safety bracket for use in the construction field, characterized in that: include: A base (1), wherein an extension seat (101) is slidably provided inside the base (1); a telescopic oil cylinder A (102) is fixedly provided between the front ends of both sides of the base (1) and the rear ends of both sides of the extension seat (101); two sets of convex edges (103) are integrally provided on both sides of the top of the base (1); a main bracket (2), wherein the main bracket (2) is hingedly provided on the front side of the convex edge (103), and the main bracket (2) can rotate 0-90 degrees; a side connecting rod (3), wherein the side connecting rod (3) is hingedly provided on the front side of the main bracket (2); a U-shaped bracket (4), wherein the U-shaped bracket (4) is hingedly provided on the front end of the side connecting rod (3); a hexagonal shaft (5), wherein the hexagonal shaft ( 5) is rotatably arranged at the left end of the rear side of the U-shaped bracket (4); a reel (6), the reel (6) is rotatably arranged above the rear side of the U-shaped bracket (4); a T-shaped transmission frame (7), one side of the T-shaped transmission frame (7) is rotatably provided with a transmission sleeve (702), and the transmission sleeve (702) is slidably arranged outside the hexagonal shaft (5); a positioning seat (8), the number of the positioning seats (8) is set to two groups, and the two groups of positioning seats (8) are fixedly arranged on both sides of the front end of the base (1); a gear pump (9), the gear pump (9) is fixedly arranged on the right side of the base (1); a ball valve (10), the ball valve (10) is connected to the front end of the gear pump (9), The base (1) further comprises: The middle rod (104) is fixedly provided between the convex edges (103) on both sides. A telescopic oil cylinder B (105) is fixedly provided at the front end of the middle rod (104). The telescopic end of the telescopic oil cylinder B (105) slides on the top of the base (1) in cooperation with the guide rail. Pull-and-pull connecting rods (106) are hingedly provided on both sides of the telescopic end of the telescopic oil cylinder B (105). The main support (2) comprises: Telescopic oil cylinder C (201), the top of both sides of the main bracket (2) are hingedly provided with a telescopic oil cylinder C (201); A control piston (202) is fixedly provided on the right side of the main bracket (2); an air pipe is provided to connect the telescopic oil cylinder C (201) and the control piston (202); the volumes of the telescopic oil cylinder C (201) and the control piston (202) are the same, and when the control piston (202) contracts, the telescopic oil cylinder C (201) extends; A lead screw (203) is rotatably provided on the right side of the main bracket (2); the telescopic end of the control piston (202) is threadedly connected to the lead screw (203); A hand-cranked shaft (204) is provided on the right side of the main support (2) for rotation, and the hand-cranked shaft (204) and the lead screw (203) are connected by a bevel gear transmission.

2. A safety bracket for use in the construction field as claimed in claim 1, characterized in that: The side connecting rod (3) includes: Side pedals (301) are fixedly provided on adjacent edges of the side connecting rods (3) on both sides; each group of side connecting rods (3) is parallel to each other, and the main bracket (2) and the U-shaped bracket (4) are parallel.

3. A safety bracket for use in the construction field as claimed in claim 1, characterized in that: The U-shaped bracket (4) comprises: Slide blocks (401) are provided on both sides of the U-shaped bracket (4) for sliding movement, and the telescopic ends of the telescopic oil cylinder C (201) are hinge-connected to the slide blocks (401); Gas telescopic rods A (402), gas telescopic rods A (402) are fixedly provided on the upper ends of adjacent surfaces on both sides of the U-shaped bracket (4), and the telescopic ends of the gas telescopic rods A (402) are fixedly connected to the bottom of the slider (401); The bottom of the U-shaped brackets (4) on both sides of the gas telescopic rod B (403) are bent toward the middle, and the gas telescopic rod B (403) is fixedly provided at the turning point. The telescopic end of the gas telescopic rod B (403) is fixedly provided with two groups of connecting pins (404).

4. A safety bracket for use in the construction field as claimed in claim 3, characterized in that: The gas telescopic rod B (403) and the gas telescopic rod A (402) are provided with an air pipe for gas communication; when the gas telescopic rod A (402) contracts, the gas telescopic rod B (403) extends; and a spring is provided on the outside of the gas telescopic rod A (402).

5. A safety bracket for use in the construction field as claimed in claim 1, characterized in that: The hexagonal shaft (5) and the winding shaft (6) are connected by bevel gear transmission; a winding roller is provided on the outside of the winding shaft (6), a pull wire is provided on the outside of the winding roller, and a hook is fixedly provided on one end of the pull wire.

6. A safety bracket for use in the construction field as claimed in claim 1, characterized in that: The T-shaped transmission frame (7) further comprises: A rotating drum (701) is integrally provided on one side of the T-shaped transmission frame (7); A control shaft (703) is rotatably provided in the rotating drum (701), and the control shaft (703) is connected to the transmission sleeve (702) via a bevel gear transmission. A handle (704) is integrally provided at the bottom of the rotating drum (701); The insertion rod (705) is an L-shaped structure. A spring rod (706) is integrally provided above one side of the insertion rod (705). The spring rod (706) is sleeved with a spring and passes through the handle (704). A locking plug (707) is provided, and one end of the plug rod (705) passes through the T-shaped transmission frame (7) and is fixedly provided with the locking plug (707); the locking plug (707) fits the hexagonal shaft (5).

7. A safety bracket for use in the construction field as claimed in claim 1, characterized in that: Two groups of through holes are provided in the middle of the positioning seat (8); when the bottom of the U-shaped bracket (4) is attached to the top of the base (1), the connecting pin (404) can be aligned with the through holes of the positioning seat (8).

8. A safety bracket for use in the construction field as claimed in claim 1, characterized in that: The gear pump (9) is connected to the ball valve (10), and the gear pump (9) is connected to the telescopic oil cylinder B (105) through a pipeline; the ball valve (10) is connected to the telescopic oil cylinder A (102); the volume of the telescopic oil cylinder A (102) is consistent with the volume of the telescopic oil cylinder B (105), and when the ball valve (10) is in an open state, the telescopic oil cylinder A (102) contracts and the telescopic oil cylinder B (105) extends.

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