Safety protection support

Abstract

The application discloses a safety protection support, which comprises a base, a slope plate hinged to the base, a climbing plate fixedly connected to the slope plate, an anti-skid mechanism, a fixing seat arranged in the base frame through a plurality of telescopic rods, two ends of the telescopic rod being hinged to the fixing seat and the base respectively, the fixing seat being movable in the base frame, a liftable positioning column arranged on the fixing seat, a positioning groove arranged on the upper surface of the fixing seat, a conductive ring fixedly connected to the inner wall of the positioning groove, a conductive column arranged in the positioning groove, the upper portion of the conductive column being fixedly connected to the base through a connecting rod, the conductive column not being in contact with the conductive ring when the base does not deviate, an information transmitter arranged on the upper surface of the fixing seat, the information transmitter being electrically connected to the conductive ring, the information transmitter being electrified and emitting a signal to a signal receiving end when the conductive column is in contact with the conductive ring. The application can quickly find the deviation of the support and conveniently determine the deviation distance.

Description

Technical Field

[0001] This invention relates to the field of hydropower station construction technology, specifically to a safety protection bracket for hydropower station construction. Background Technology

[0002] During the construction of a hydropower station, scaffolding needs to be erected on the construction site to facilitate vertical and horizontal transportation for operators. In order to protect the safety of construction workers, protective structures need to be set up to fence off the edges of the protective scaffolding. Since hydropower stations contain a large number of sloping surfaces, some scaffolding and baffles need to be set up at an angle. The inclined scaffolding is usually fixed to the ground to prevent it from moving. However, fixed scaffolding is not easy to set up during later maintenance and regional construction. Therefore, it is necessary to use protective scaffolding that is easy to move.

[0003] Mobile scaffolding is prone to shifting off the ground after being erected for a period of time. The shift may be small and difficult to detect, but it can cause safety problems during construction. Summary of the Invention

[0004] The present invention addresses the aforementioned technical problems by providing a safer safety protection bracket for hydropower station construction that can detect slight displacement of the support structure.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A safety protection bracket includes a base with an inclined plate hinged to it, and a climbing board fixedly connected to the inclined plate. The bracket is characterized by further including an anti-slip mechanism, comprising a fixed seat disposed within the base frame via several telescopic rods; the two ends of each telescopic rod are hinged to the fixed seat and the base respectively, allowing the fixed seat to move within the base frame; a liftable positioning post is disposed on the fixed seat; a positioning groove is formed on the upper surface of the fixed seat, a conductive ring is fixedly connected to the inner wall of the positioning groove, and a conductive post is disposed within the positioning groove. The top of the conductive post is fixedly connected to the base via a connecting rod, ensuring that the conductive post does not contact the conductive ring when the base does not shift; an information transmitter is disposed on the upper surface of the fixed seat, electrically connected to the conductive ring, and when the conductive post contacts the conductive ring, the information transmitter is energized and transmits a signal to a signal receiver.

[0006] Therefore, when the base and the inclined plate shift, the lower side of the positioning column has a large friction with the ground, which restricts the movement of the fixed seat. The telescopic rod keeps the fixed seat fixed by its own deflection and contraction. After the base shifts relative to the fixed seat, the conductive column will move with the base because it is fixed to the base, so that the conductive column comes into contact with the conductive ring. Then, the information transmitter will transmit a signal to the signal receiver, so that the staff can receive the message of the base shift in real time through the signal receiver, and thus detect the danger in advance.

[0007] According to embodiments of the present invention, the present invention can be further optimized, and the optimized technical solution is as follows: To facilitate observation of the distance of the protective bracket, in one specific embodiment, a rotating shaft is fixedly connected to one end of the telescopic rod that is hinged to the base. The lower end of the rotating shaft is rotatably connected to the outer wall of the base via a bearing. An angle-deflection mechanism is provided at the end of the telescopic rod that is hinged to the base. The angle-deflection mechanism includes a scale strip fixedly disposed on the upper surface of the base and a deflection plate hinged to the rotating shaft. A limit rod that can move up and down is threadedly connected to the deflection plate. The lower end of the limit rod is correspondingly disposed to the upper end of the rotating shaft.

[0008] In one specific embodiment, the scale bar is an arc-shaped plate structure with an angle marked on its upper surface, and the deflection plate includes a reading part of the arc-shaped plate structure and a connecting part that is hinged to the rotating shaft; the upper surface of the rotating shaft is provided with an upwardly extending connecting post, and the connecting part is hinged to the connecting post; the center of the deflection plate and the connecting post coincides with the center of the scale bar.

[0009] When the base and the inclined plate shift, the base moves relative to the fixed seat, causing the connecting pile to drive the deflector plate to deflect. This causes the deflector plate to move above the scale bar. Once the staff arrives, they can determine the displacement range of the base by observing the deflection angle of the deflector plate.

[0010] The offset mechanism can determine the longitudinal slope of the base, but it is not clear enough in terms of the lateral slope distance of the base. In a specific embodiment, a dyeing mechanism is provided on the upper side of the fixed base; the dyeing mechanism includes a pigment tank, the outer wall of the pigment tank is fixedly connected to the outer wall of the fixed base, a pigment outlet is provided on the lower side of the pigment tank, and a cover is provided below the pigment outlet.

[0011] In one specific embodiment, the dyeing mechanism further includes a drive mechanism for driving the cover to open or close the pigment outlet; the drive mechanism includes an electric telescopic rod, one end of which is hinged to the upper side of the outer wall of the fixed base, and a collar is fixedly connected to the output end of the electric telescopic rod. A pull rod is rotatably connected to the inner wall of the collar via a bearing. A semi-circular transmission rod is fixedly connected to the lower side of the pull rod. One end of the transmission rod is fixedly connected to the pull rod, and the other end passes through the pigment tank and extends into the interior of the pigment tank. The end of the transmission rod located inside the pigment tank is fixedly connected to the cover, and the center of the transmission rod is hinged to the fixed base via a hinge shaft; the lower surface of the cover shields the upper side of the drip outlet.

[0012] In one specific embodiment, a power source is also fixedly connected to the outer wall of the base. The positive terminal of the power source is electrically connected to the conductive post through a wire. The conductive ring is electrically connected to the information transmitter through a wire. The information transmitter is electrically connected to the electric telescopic rod through a wire. The electric telescopic rod is electrically connected to the negative terminal of the power source through a wire.

[0013] This allows staff to determine the displacement speed of base 1 by the time the signal is received and the distance the paint drips upon arrival, thus facilitating the observation of potential hazards.

[0014] In one specific embodiment, an adjustment mechanism is provided between the base and the inclined plate. The adjustment mechanism includes a toothed groove formed on the side wall of the base, and the lower surface of the toothed groove is provided with a toothed structure. A connecting arm is hinged to the side wall of the inclined plate, and a fixing cylinder is fixedly connected to the lower end of the connecting arm. One side of the fixing cylinder extends into the interior of the toothed groove, and a slider extending upward to the upper surface of the base is fixedly connected to the end of the fixing cylinder located inside the toothed groove. The outer wall of the slider is slidably connected to the inner wall of the toothed groove. A snap-fit ​​structure is provided inside the fixing cylinder to engage with the toothed structure of the toothed groove.

[0015] In one specific embodiment, the snap-fit ​​structure includes a threaded rod that is threadedly connected to the inner wall of the fixed cylinder, with one end of the threaded rod away from the slider extending to the outer side of the fixed cylinder; a limit block is provided on one side of the fixed cylinder extending into the tooth groove, the lower side of the limit block penetrating the fixed cylinder, and a spring is fixedly connected to the upper side of the limit block, with the upper end of the spring extending to the inner wall of the fixed cylinder.

[0016] In one specific embodiment, the limiting block has an inclined surface on the side near the threaded rod, the threaded rod can move inside the fixed cylinder, and when the threaded rod moves toward the limiting block, it can push the limiting block downward. After the lower end of the limiting block moves to the outside of the fixed cylinder, it is located in the gap of the toothed structure on the lower side of the tooth groove inner wall.

[0017] In one specific embodiment, the upper surface of the base is provided with a counterweight groove, the middle part of the fixed seat is provided with a threaded hole, and the internal thread of the threaded hole is connected to a positioning pin that can move up and down.

[0018] Compared with the prior art, the beneficial effects of the present invention are: 1) The safety protection bracket of the present invention is equipped with a base, climbing board, counterweight groove and other structures, which enables the device to be stably erected on the slope of the hydropower station for protection. By setting an anti-slip mechanism, the device can send a notification through the relative displacement of the conductive column and conductive ring when it moves, thereby warning of danger. When the protective bracket is slightly tilted, it is also convenient for people to determine the position of the protective bracket that has shifted.

[0019] 2) The safety protection bracket of the present invention is equipped with an angle deflection mechanism, which enables the device to accurately calculate the displacement distance and displacement amplitude after displacement occurs, thereby providing a better understanding of the displacement situation; and by being equipped with a dyeing mechanism, the device can drip pigment from the bottom of the pigment container after the notification is issued, thereby calculating the displacement speed and ensuring construction safety. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the base of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the threaded rod of the present invention; Figure 4 This is a partial structural schematic diagram of the anti-slip mechanism of the present invention; Figure 5 This is a schematic diagram of the anti-slip mechanism of the present invention; Figure 6 This is an enlarged structural schematic diagram of the deflection mechanism of the present invention; Figure 7 This is a schematic diagram of the internal structure of the dyeing mechanism of the present invention.

[0021] In the figure 1-Base; 2-Inclined plate; 3-Climbing board; 4-Groove; 5-Connecting arm; 6-Fixed cylinder; 7-Slider; 8-Threaded rod; 9-Spring; 10-Limiting block; 11-Counterweight groove; 12-Anti-slip mechanism; 201-Fixed seat; 202-Telescopic rod; 203-Angle mechanism; 204-Dyeing mechanism; 205-Positioning post; 206-Conductive ring; 207-Information transmitter; 208-Connecting rod; 209-Conductive post; 210-Power supply; 211-Rotating shaft; 301-Scale strip; 302-Connecting post; 303-Deflection plate; 304-Limiting rod; 401-Paint container; 402-Drip nozzle; 403-Electric telescopic rod; 404-Ring; 405-Pull rod; 406-Arc rod; 407-Cover plate. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" used below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0023] like Figure 1 As shown, the safety protection bracket of this embodiment includes a base 1, an inclined plate 2 hinged to the base 1, and a climbing board 3 fixedly connected to the inclined plate 2. Its characteristic is that it further includes an anti-slip mechanism 12, which includes a fixed seat 201 disposed inside the frame of the base 1 via several telescopic rods 202; the two ends of the telescopic rods 202 are respectively hinged to the fixed seat 201 and the base 1, allowing the fixed seat 201 to move within the frame of the base 1; the fixed seat 201 is provided with a liftable positioning post 205; the upper surface of the fixed seat 201 is open. The system includes a positioning groove, with a conductive ring 206 fixedly connected to the inner wall of the positioning groove. A conductive post 209 is disposed within the positioning groove, and the upper part of the conductive post 209 is fixedly connected to the base 1 via a connecting rod 208. When the base 1 does not shift, the conductive post 209 and the conductive ring 206 do not contact each other. An information transmitter 207 is disposed on the upper surface of the fixed base 201, and the information transmitter 207 is electrically connected to the conductive ring 206. When the conductive post 209 contacts the conductive ring 206, the information transmitter 207 is energized and transmits a signal to the signal receiver. A counterweight groove 11 is formed on the upper surface of the base 1, and a threaded hole is formed in the middle of the fixed base 201. A positioning post 205 that can move up and down is threadedly connected inside the threaded hole. The connecting rod 208 is an elastic telescopic rod.

[0024] The outer wall of the base 1 is also fixedly connected to a power supply 210. The positive terminal of the power supply 210 is electrically connected to the conductive post 209 through a wire. The conductive ring 206 is electrically connected to the information transmitter 207 through a wire. The information transmitter 207 is electrically connected to the electric telescopic rod 403 through a wire. The electric telescopic rod 403 is electrically connected to the negative terminal of the power supply 210 through a wire.

[0025] Before use, rotate the positioning post 205 downwards so that the lower side of the positioning post 205 is in close contact with the ground. When the base 1 and the inclined plate 2 are displaced, the lower side of the positioning post 205 has a large friction with the ground, so the positioning post 205 restricts the movement of the fixed seat 201. The telescopic rod 202 keeps the fixed seat 201 fixed by its own deflection and contraction and stretching. After the base 1 is displaced relative to the fixed seat 201, the outer wall of the conductive post 209 will contact the inner wall of the conductive ring 206, which will cause the information transmitter 207 to transmit a signal to the signal receiver. This allows the staff to receive the message that the base 1 has moved in real time through the signal receiver, thus discovering the danger in advance.

[0026] Angle mechanism The telescopic rod 202 is hinged to the base 1 and a rotating shaft 211 is fixedly connected to one end. The lower end of the rotating shaft 211 is rotatably connected to the outer wall of the base 1 through a bearing. The telescopic rod 202 is hinged to the base 1 and a deflection mechanism 203 is provided. The deflection mechanism 203 includes a scale bar 301 fixedly disposed on the upper surface of the base 1 and a deflection plate 303 hinged to the rotating shaft 211. A limit rod 304 that can move up and down is threadedly connected to the deflection plate 303. The lower end face of the limit rod 304 is correspondingly disposed to the upper end face of the rotating shaft 211.

[0027] The scale bar 301 is an arc-shaped plate structure with an angle marked on its upper surface. The deflection plate 303 includes a reading part of the arc-shaped plate structure and a connecting part that is hinged to the rotating shaft 211. The upper surface of the rotating shaft 211 is provided with an upwardly extending connecting post 302, and the connecting part is hinged to the connecting post 302. The center of the deflection plate 303 and the connecting post 302 is consistent with the center of the scale bar 301.

[0028] Before use, remove the limiting rod 304, then rotate one end of the deflection plate 303 to the middle of the scale bar 301, and then rotate the limiting rod 304 to the lower side to make close contact with the outer wall of the rotating shaft 211. Then, when the base 1 moves relative to the fixed seat 201, the telescopic rod 202 will deflect relative to the base 1, thereby causing the telescopic rod 202 to drive the rotating shaft 211 to rotate, causing the rotating shaft 211 to drive the connecting pin 302 to deflect, thereby causing the connecting pin 302 to drive the deflection plate 303 to deflect, causing the deflection plate 303 to move on the upper side of the scale bar 301. When the staff arrives, they can know the displacement range of the base 1 by the deflection angle of the deflection plate 303.

[0029] dyeing facility A dyeing mechanism 204 is provided on the upper side of the fixed base 201; the dyeing mechanism 204 includes a pigment tank 401, the outer wall of the pigment tank 401 is fixedly connected to the outer wall of the fixed base 201, a pigment outlet is provided on the lower side of the pigment tank 401, and a cover plate 407 is provided below the pigment outlet.

[0030] The dyeing mechanism 204 further includes a drive mechanism for driving the cover plate 407 to open or close the pigment outlet; the drive mechanism includes an electric telescopic rod 403, one end of which is hinged to the upper side of the outer wall of the fixed base 201, and a collar 404 is fixedly connected to the output end of the electric telescopic rod 403. A pull rod 405 is rotatably connected to the inner wall of the collar 404 through a bearing. A semi-circular transmission rod 406 is fixedly connected to the lower side of the pull rod 405. One end of the transmission rod 406 is fixedly connected to the pull rod 405, and the other end passes through the pigment tank 401 and extends into the interior of the pigment tank 401. The end of the transmission rod 406 located inside the pigment tank 401 is fixedly connected to the cover plate 407, and the center of the transmission rod 406 is hinged to the fixed base 201 through a hinge shaft; the lower surface of the cover plate 407 shields the upper side of the drip outlet 402.

[0031] The positive terminal of the power supply 210 is electrically connected to the conductive post 209 via a wire, the conductive ring 206 is electrically connected to the information transmitter 207 via a wire, the information transmitter 207 is electrically connected to the electric telescopic rod 403 via a wire, and the electric telescopic rod 403 is electrically connected to the negative terminal of the power supply 210 via a wire.

[0032] Before use, the pigment can 401 is pre-filled with pigment. After the conductive ring 206 and the information transmitter 207 are energized, the electric telescopic rod 403 retracts, causing the collar 404, pull rod 405, and arc rod 406 to deflect. This causes the arc rod 406 to move the cover 407 away from the upper side of the dripping port 402. After the cover 407 is moved away from the upper side of the dripping port 402, the pigment inside the pigment can 401 will flow out from the lower side of the dripping port 402. This allows the staff to know the displacement speed of the base 1 by the time the signal is received and the distance the pigment drips when it arrives, thus making it easier to observe potential dangers.

[0033] Regulation mechanism An adjustment mechanism is provided between the base 1 and the inclined plate 2. The adjustment mechanism includes a toothed groove 4 formed on the side wall of the base 1, and the lower surface of the toothed groove 4 is provided with a toothed structure. A connecting arm 5 is hinged to the side wall of the inclined plate 2. A fixing cylinder 6 is fixedly connected to the lower end of the connecting arm 5. One side of the fixing cylinder 6 extends into the interior of the toothed groove 4. A slider 7 is fixedly connected to the end of the fixing cylinder 6 located inside the toothed groove 4, which extends upward to the upper surface of the base. The outer wall of the slider 7 is slidably connected to the inner wall of the toothed groove 4. A snap-fit ​​structure is provided inside the fixing cylinder 6 to engage with the toothed structure of the toothed groove 4.

[0034] The snap-fit ​​structure includes a threaded rod 8 that is threaded to the inner wall of the fixed cylinder 6, with one end of the threaded rod 8 away from the slider 7 extending to the outside of the fixed cylinder 6; a limiting block 10 is provided on one side of the fixed cylinder 6 extending into the tooth groove 4, with the lower side of the limiting block penetrating the fixed cylinder 6, and a spring 9 fixedly connected to the upper side of the limiting block, with the upper end of the spring 9 extending to the inner wall of the fixed cylinder 6.

[0035] The limiting block 10 has an inclined surface on the side near the threaded rod 8. The threaded rod 8 can move inside the fixed cylinder 6. When the threaded rod 8 moves toward the limiting block 10, it can push the limiting block 10 downward. After the lower end of the limiting block 10 moves to the outside of the fixed cylinder 6, it is located in the gap of the toothed structure on the lower side of the inner wall of the tooth groove 4.

[0036] When in use, rotate the threaded rod 8 out of the fixed cylinder 6, causing the spring 9 to rebound and lift the limiting block 10, thereby allowing the slider 7 to move inside the toothed groove 4. At this time, tilt the inclined plate 2 until it fits the slope, then rotate the threaded rod 8 into the fixed cylinder 6, causing the threaded rod 8 to push the limiting block 10 downward, thereby pulling the spring 9 to deform. Then, the lower side of the limiting block 10 locks into the toothed structure of the inner wall of the toothed groove 4, and the counterweight material is placed on the upper side of the counterweight groove 11, thereby making it counterweight the base 1, so that the inclined plate 2 forms a stable and safe support.

[0037] The above embodiments should be understood as being used only to illustrate the present invention more clearly, and not to limit the scope of the present invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art fall within the scope defined by the appended claims.

Claims

1. A safety protection bracket, comprising a base (1), wherein an inclined plate (2) is hinged to the base (1), and a climbing board (3) is fixedly connected to the inclined plate (2), characterized in that: It also includes an anti-slip mechanism (12), which includes a fixed seat (201) set inside the frame of the base (1) by a plurality of telescopic rods (202); the two ends of the telescopic rods (202) are respectively hinged to the fixed seat (201) and the base (1), so that the fixed seat (201) can move inside the frame of the base (1); the fixed seat (201) is provided with a liftable positioning column (205). The upper surface of the fixed base (201) is provided with a positioning groove, and a conductive ring (206) is fixedly connected to the inner wall of the positioning groove. A conductive post (209) is provided in the positioning groove. The upper part of the conductive post (209) is fixedly connected to the base (1) through a connecting rod (208). When the base (1) does not shift, the conductive post (209) does not contact the conductive ring (206). An information transmitter (207) is provided on the upper surface of the fixed base (201). The information transmitter (207) is electrically connected to the conductive ring (206). When the conductive post (209) contacts the conductive ring (206), the information transmitter (207) is energized and transmits a signal to the signal receiving end.

2. The safety protection bracket according to claim 1, characterized in that: The telescopic rod (202) is hinged to the base (1) and a rotating shaft (211) is fixedly connected to one end. The lower end of the rotating shaft (211) is rotatably connected to the outer wall of the base (1) through a bearing. The telescopic rod (202) is hinged to the base (1) and a deflection mechanism (203) is provided. The deflection mechanism (203) includes a scale bar (301) fixedly installed on the upper surface of the base (1) and a deflection plate (303) hinged to the rotating shaft (211). A limit rod (304) that can move up and down is threaded onto the deflection plate (303). The lower end face of the limit rod (304) is correspondingly provided to the upper end face of the rotating shaft (211).

3. The safety protection bracket according to claim 2, characterized in that: The scale bar (301) is an arc-shaped plate structure with an angle marked on its upper surface. The deflection plate (303) includes a reading part of the arc-shaped plate structure and a connecting part that is hinged to the rotating shaft (211). The upper surface of the rotating shaft (211) is provided with an upwardly extending connecting post (302), and the connecting part is hinged to the connecting post (302). The center of the deflection plate (303) and the connecting post (302) is consistent with the center of the scale bar (301).

4. The safety protection bracket according to claim 1, characterized in that: A dyeing mechanism (204) is provided on the upper side of the fixed base (201); the dyeing mechanism (204) includes a pigment tank (401), the outer wall of the pigment tank (401) is fixedly connected to the outer wall of the fixed base (201), a pigment outlet is provided on the lower side of the pigment tank (401), and a cover plate (407) is provided below the pigment outlet.

5. The safety protection bracket according to claim 4, characterized in that: The dyeing mechanism (204) further includes a drive mechanism for driving the cover plate (407) to open or close the pigment outlet; the drive mechanism includes an electric telescopic rod (403), one end of which is hinged to the upper side of the outer wall of the fixed base (201), and a collar (404) is fixedly connected to the output end of the electric telescopic rod (403). A pull rod (405) is rotatably connected to the inner wall of the collar (404) through a bearing, and a semicircular ring is fixedly connected to the lower side of the pull rod (405). An arc-shaped rod (406) is provided, one end of which is fixedly connected to the pull rod (405), and the other end of which passes through the pigment can (401) and extends into the interior of the pigment can (401). The end of the arc-shaped rod (406) located inside the pigment can (401) is fixedly connected to the cover plate (407). The center of the arc-shaped rod (406) is hinged to the fixed base (201) through a hinge shaft. The lower surface of the cover plate (407) covers the upper side of the drip nozzle (402).

6. The safety protection bracket according to claim 5, characterized in that: The outer wall of the base (1) is also fixedly connected to a power source (210). The positive terminal of the power source (210) is electrically connected to the conductive post (209) through a wire. The conductive ring (206) is electrically connected to the information transmitter (207) through a wire. The information transmitter (207) is electrically connected to the electric telescopic rod (403) through a wire. The electric telescopic rod (403) is electrically connected to the negative terminal of the power source (210) through a wire.

7. The safety protection bracket according to claim 1, characterized in that: An adjustment mechanism is provided between the base (1) and the inclined plate (2). The adjustment mechanism includes a toothed groove (4) on the side wall of the base (1). The lower surface of the toothed groove (4) is provided with a toothed structure. A connecting arm (5) is hinged to the side wall of the inclined plate (2). A fixing cylinder (6) is fixedly connected to the lower end of the connecting arm (5). One side of the fixing cylinder (6) extends into the interior of the toothed groove (4). One end of the fixing cylinder (6) located inside the toothed groove (4) is fixedly connected to a slider (7) extending upward to the upper surface of the base. The outer wall of the slider (7) is slidably connected to the inner wall of the toothed groove (4). A snap-fit ​​structure is provided inside the fixing cylinder (6) to snap into the toothed structure of the toothed groove (4).

8. The safety protection bracket according to claim 7, characterized in that: The snap-fit ​​structure includes a threaded rod (8) that is threaded to the inner wall of the fixed cylinder (6), with one end of the threaded rod (8) away from the slider (7) extending to the outside of the fixed cylinder (6); a limiting block (10) is provided on one side of the fixed cylinder (6) extending into the tooth groove (4), with the lower side of the limiting block penetrating the fixed cylinder (6), and a spring (9) fixedly connected to the upper side of the limiting block, with the upper end of the spring (9) extending to the inner wall of the fixed cylinder (6).

9. The safety protection bracket according to claim 8, characterized in that: The limiting block (10) has an inclined surface on the side near the threaded rod (8). The threaded rod (8) can move inside the fixed cylinder (6). When the threaded rod (8) moves toward the limiting block (10), it can push the limiting block (10) downward. After the lower end of the limiting block (10) moves to the outside of the fixed cylinder (6), it is located in the gap of the toothed structure on the lower side of the inner wall of the tooth groove (4).

10. The safety protection bracket according to any one of claims 1-9, characterized in that: The upper surface of the base (1) is provided with a counterweight groove (11), and the middle part of the fixed seat (201) is provided with a threaded hole. The internal thread of the threaded hole is connected to a positioning column (205) that can move up and down; the connecting rod (208) is an elastic telescopic rod.

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