CN219604818U - Pretensioning anti-falling device for overhead stone - Google Patents

Abstract

The utility model discloses a top stone pre-tensioning anti-falling device which comprises a base, an anti-falling mechanism, a top shell and an anti-sliding mechanism, wherein the top end of the base is welded with the top shell, a motor is installed in the base, the output end of the motor is rotationally connected with a polished rod through a bearing, the top end of the polished rod is welded with a first conical gear, and the right end of the first conical gear is connected with a second conical gear. This cross roof stone pretension anti-falling device is through setting up anti-falling mechanism, the polished rod of motor drive output rotates, thereby make the lead screw rotate, and then make two first sliders to lead screw both ends translation, make operation platform rise, the staff begins stretch-draw construction with jack installation back, avoided the jack during operation to be in unsettled state, this just leads to taking place to drop easily in suspension jack and jack during operation, thereby lead to the fall of jack, and then can smash the staff who hurts ground, very dangerous problem.

Description

Pretensioning anti-falling device for overhead stone

Technical Field

The utility model relates to the technical field of pretension, in particular to a pretension falling-preventing device for an overhead stone.

Background

The pretension refers to pretension, that is, pretension is added in advance in a member, so that the member subjected to pretension bears compressive stress, and further causes the member to generate certain deformation, so as to cope with loads born by the structure itself, including loads of the member, wind loads, snow loads, earthquake loads and the like. The steel stranded wires, the jacks, the anchor plates and the clamping pieces are generally used for tensioning, pretension stress is applied to the steel stranded wires in the tension module before the engineering structural member bears external load, the bending resistance and rigidity of the member are improved, the occurrence time of cracks is delayed, and the durability of the member is improved. In terms of mechanical structure, the mechanical structure means that stress is generated in advance, and the mechanical structure has the advantages that the rigidity of the structure can be improved, vibration and elastic deformation are reduced, so that the elastic strength of the tension module can be obviously improved, and the original resistance is stronger.

The pretension in the market at present uses comparatively extensively, installs the ground tackle earlier during the use, then installs the jack again, then installs the clamping piece, then begins stretch-draw construction, during the installation jack, the staff hangs the chain one end that has the hook on the jack surface, afterwards hangs the jack to the position of needs through the loop wheel machine, then the staff installs the jack, and the jack during operation is in unsettled state, this just leads to taking place to drop easily when hanging jack and jack during operation, thereby lead to the fall of jack, and then can smash the staff who hurts ground, very dangerous.

Disclosure of Invention

The utility model aims to provide a pre-tensioning anti-falling device for a jackstone, which aims to solve the problems that the existing jack in the market provided by the background technology is in a suspended state during working, so that the jack is easy to fall off during suspending and working, the jack falls down, and workers on the ground are injured by crashing, and the problem is very dangerous.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a cross roof stone pretension anti-falling device, includes base, anti-falling mechanism, top shell and anti-skidding mechanism, the top welding of base has a top shell, and the internally mounted of base has the motor, the output of motor is connected with the polished rod through the bearing rotation, and the top welding of polished rod has first conical gear, the right-hand member of first conical gear links has second conical gear, and the outer end welding of second conical gear has the lead screw, the surface cover of lead screw is equipped with first slider, and the top of first slider articulates there is first bracing piece, the end of first bracing piece articulates there is the supporting shoe.

Preferably, the first bevel gear is connected with the second bevel gear in a meshed mode, the first sliding block is connected with the screw rod in a threaded mode, a sliding groove is formed in the base, and the first sliding block and the base form a sliding structure through the sliding groove.

Preferably, the top end of the supporting block is welded with an operation platform, two first sliding blocks are arranged in total, and the two first sliding blocks are symmetrically arranged relative to the central line of the operation platform.

Preferably, a sliding groove is formed in the surface of the operation platform, a second sliding block is connected inside the sliding groove in a sliding mode, a supporting column is welded to the top end of the second sliding block, and a jack is welded to the top end of the supporting column.

Preferably, the support column and the operation platform form a sliding structure through the second sliding block, and the center line of the jack coincides with the center line of the support column.

Preferably, the inside welding of base has the telescopic link, and the inside of telescopic link is provided with first reset spring, the bayonet socket has been seted up on the surface of telescopic link, and the bottom welding of telescopic link has the second bracing piece, the bottom welding of second bracing piece has the antiskid ribbed tile.

Preferably, the second support rod and the base form a lifting structure through the telescopic rod, and the second support rod and the telescopic rod form an elastic structure through the first reset spring.

Preferably, the inside welding of base has the inner shell, and the inside of inner shell is provided with second reset spring, second reset spring's front end welding has the stopper, and the inside of stopper runs through there is the bolt, the outer end welding of bolt has pressing the briquetting.

Compared with the prior art, the utility model has the beneficial effects that: the pre-tensioning anti-falling device for the overhead stone comprises:

1. through being provided with anti-falling mechanism, the polished rod of motor drive output and the first conical gear on polished rod top rotate, make the second conical gear and the terminal lead screw of second conical gear rotate with first conical gear meshing, the lead screw surface is double reverse screw thread, when the lead screw rotates, make two first sliders of screw thread connection translate to lead screw both ends, make first slider exert a thrust to first bracing piece articulated with first slider, make first bracing piece exert a thrust to first bracing piece terminal articulated supporting shoe and welded on the operating platform on supporting piece top, make operating platform rise, after reaching the assigned position, make jack translation and reach the assigned position on the supporting column top through pushing the support column that is connected with operating platform sliding, the staff begins stretch-draw construction after installing the jack, whole process is accomplished inside operating platform, it is in the unsettled state to have avoided the jack during operation, this just results in easily taking place when suspending jack and jack work, thereby result in the jack to fall, and then can injure the staff on ground, very dangerous problem;

2. through being provided with anti-skidding mechanism, promote the back to appointed position with whole device through the universal wheel, step on the presser foot footboard, make the terminal connecting rod of footboard and the terminal telescopic link of connecting rod together downwardly extending, make the antiskid plate contact ground of telescopic link bottom, when the telescopic link moves down, the telescopic link forms a thrust to the bolt on right side, make the bolt through limiting plate and second reset spring shrink inside the inner shell, and make second reset spring form shrink elasticity, reset through the second reset spring when the bolt touches the bayonet socket on telescopic link surface, and with the bayonet socket block, make the antiskid plate by spacing, avoided leading to the device to take place the displacement because of external force factor, make the device take place to rock, and then make the staff on operation platform surface stand unstably and take place the danger of dropping, the security and the steadiness of device have been promoted.

Drawings

FIG. 1 is a front cross-sectional view of the present utility model;

FIG. 2 is a left side view of the present utility model;

fig. 3 is a top view of the present utility model.

In the figure: 1. a base; 2. a fall prevention mechanism; 201. a motor; 202. a polish rod; 203. a first bevel gear; 204. a second bevel gear; 205. a screw rod; 206. a first slider; 207. a first support bar; 208. a support block; 209. an operating platform; 2010. a chute; 2011. a support column; 2012. a second slider; 2013. a jack; 3. a top shell; 4. an anti-slip mechanism; 401. an inner case; 402. a telescopic rod; 403. a first return spring; 404. a limiting block; 405. a second return spring; 406. a plug pin; 407. pressing the blocks; 408. a second support bar; 409. a cleat; 4010. a connecting rod; 4011. a foot pedal; 4012. a bayonet.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1, 2 and 3, the present utility model provides a technical solution: the utility model provides a cross roof stone pretension anti-falling device, including base 1, anti-falling mechanism 2, motor 201, polished rod 202, first conical gear 203, second conical gear 204, lead screw 205, first slider 206, first bracing piece 207, supporting shoe 208, operation platform 209, spout 2010, support column 2011, second slider 2012, jack 2013, top shell 3, anti-skidding mechanism 4, inner shell 401, telescopic link 402, first reset spring 403, stopper 404, second reset spring 405, bolt 406, press piece 407, second bracing piece 408, antiskid plate 409, connecting rod 4010, running-board 4011 and bayonet 4012, the top welding of base 1 has top shell 3, and the internally mounted of base 1 has motor 201, the output of motor 201 is connected with polished rod 202 through the bearing rotation, and the top welding of polished rod 202 has first conical gear 203, first conical gear 203 and second conical gear 204 mesh connection, drive polished rod 202 through motor 201 top's a conical gear 203 rotation, and then drive lead screw 205 rotates.

Referring to fig. 1, a first slider 206 is in threaded connection with a screw rod 205, a sliding groove 2010 is provided in the base 1, the first slider 206 and the base 1 form a sliding structure through the sliding groove 2010, and the first slider 206 is limited by the sliding groove 2010 during translation by sliding connection of the first slider 206 and the sliding groove 2010, so that the first slider 206 is prevented from being dislocated.

Referring to fig. 1 and 2, a second bevel gear 204 is linked to the right end of the first bevel gear 203, a screw rod 205 is welded to the outer end of the second bevel gear 204, a first sliding block 206 is sleeved on the surface of the screw rod 205, a first supporting rod 207 is hinged to the top end of the first sliding block 206, a supporting block 208 is hinged to the tail end of the first supporting rod 207, an operation platform 209 is welded to the top end of the supporting block 208, and the screw rod 205 drives the two first sliding blocks 206 to translate towards the middle, so that the first supporting rod 207 can push up the operation platform through the supporting block 208.

Referring to fig. 1 and 3, two first sliders 206 are provided, and the two first sliders 206 are symmetrically disposed about a center line of the operation platform 209, a chute 2010 is provided on a surface of the operation platform 209, a second slider 2012 is slidably connected to an inside of the chute 2010, and a support column 2011 is welded to a top end of the second slider 2012, and is slidably connected to the chute 2010 through the second slider 2012, so that the support column 2011 is convenient to be pushed, and the jack 2013 is convenient to be applied to different positions.

Referring to fig. 1 and 2, a jack 2013 is welded to the top end of a support column 2011, the support column 2011 and an operation platform 209 form a sliding structure through a second slider 2012, and the center line of the jack 2013 coincides with the center line of the support column 2011, and this arrangement of a motor 201 drives a polish rod 202 at the output end and a first bevel gear 203 at the top end of the polish rod 202 to rotate, so that a second bevel gear 204 meshed with the first bevel gear 203 and a screw rod 205 at the tail end of the second bevel gear 204 rotate, the surface of the screw rod 205 is double-reverse threads, and when the screw rod 205 rotates, two first sliders 206 in threaded connection with the screw rod 205 translate towards the two ends of the screw rod 205, so that the first sliders 206 apply a thrust to a first support rod 207 hinged with the first sliders 206.

Referring to fig. 1 and 2, the first support rod 207 applies a pushing force to the support block 208 hinged to the end of the first support rod 207 and the operation platform 209 welded at the top end of the support block 208, so that the operation platform 209 rises, after reaching a designated position, the jack 2013 at the top end of the support column 2011 is translated and reaches the designated position by pushing the support column 2011 in sliding connection with the operation platform 209, a worker starts tensioning construction after installing the jack 2013, the whole process is completed inside the operation platform 209, the jack 2013 is prevented from being in a suspended state during working, and falling off easily during suspending the jack 2013 and working of the jack 2013, so that the jack 2013 falls down, and workers on the ground can be injured by the workers on the ground, and the problem of danger is avoided.

Referring to fig. 1, a telescopic rod 402 is welded in the base 1, a first return spring 403 is arranged in the telescopic rod 402, a bayonet 4012 is formed in the surface of the telescopic rod 402, a second supporting rod 408 is welded at the bottom end of the telescopic rod 402, a antiskid plate 409 is welded at the bottom end of the second supporting rod 408, and the second supporting rod 408 and the base 1 form a lifting structure through the telescopic rod 402, so that the antiskid plate 409 can lift through the telescopic rod 402.

Referring to fig. 1, the second supporting rod 408 and the telescopic rod 402 form an elastic structure through the first return spring 403, the inner shell 401 is welded in the base 1, the second return spring 405 is disposed in the inner shell 401, the latch 406 resets through the second return spring 405 and forms a clamping connection with the bayonet 4012, and the antiskid plate 409 is limited through the clamping connection between the latch 406 and the bayonet 4012.

Referring to fig. 1 and 2, a limiting block 404 is welded at the front end of a second return spring 405, a bolt 406 penetrates through the inside of the limiting block 404, a pressing block 407 is welded at the outer end of the bolt 406, after the whole device is pushed to a designated position by a universal wheel, a foot pedal 4011 is stepped on, a connecting rod 4010 at the tail end of the foot pedal 4011 and a telescopic rod 402 at the tail end of the connecting rod 4010 extend downwards together, a antiskid plate 409 at the bottom end of the telescopic rod 402 contacts the ground, and the friction force between the device and the ground is increased by contacting the antiskid plate 409 with the ground.

Referring to fig. 1 and 2, the telescopic rod 402 forms a thrust to the bolt 406 on the right side, so that the bolt 406 is contracted in the inner shell 401 through the limiting block 404 and the second reset spring 405, and the second reset spring 405 forms a contracted elasticity, when the bolt 406 touches the bayonet 4012 on the surface of the telescopic rod 402, the bolt is reset through the second reset spring 405 and is clamped with the bayonet 4012, so that the antiskid plate 409 is limited, displacement of the device caused by external force factors is avoided, the device is rocked, and further, the danger that a worker on the surface of an operation platform falls due to unstable standing is avoided, and the safety and stability of the device are improved.

Working principle: when the device is used, firstly, a worker steps on the pedal 4011, the connecting rod 4010 at the tail end of the pedal 4011 and the telescopic rod 402 at the tail end of the connecting rod 4010 extend downwards together, the antiskid plate 409 contacts the ground, the telescopic rod 402 is clamped with the bayonet 4012 through the bolt 406 when extending downwards, the antiskid plate 409 is limited, friction force between the whole device and the ground is increased, then, the worker enters the surface of the operation platform 209, the motor 201 is started, the motor 201 drives the polish rod 202 at the output end and the first conical gear 203 welded at the top end of the polish rod 202 to rotate, the second conical gear 204 meshed with the first conical gear 203 and the screw rod 205 at the tail end of the second conical gear 204 rotate, two first slide blocks 206 in threaded connection with the screw rod 205 translate towards the two ends of the screw rod, the first slide blocks 206 apply an inference to the first support rod 207 hinged with the first slide blocks 206, the operation platform 209 is lifted, after the worker reaches a designated position, the jack 2011 is pushed to enable the top end 2011 to be in sliding connection with the operation platform, the jack 2013 reaches the designated position, and the worker does not translate the jack to the designated position, and the worker is in the prior art.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims (8)

1. The utility model provides a cross roof stone pretension anti-falling device, includes base (1), anti-falling mechanism (2), top shell (3) and anti-skidding mechanism (4), its characterized in that: top welding of base (1) has top shell (3), and the internally mounted of base (1) has motor (201), the output of motor (201) is connected with polished rod (202) through the bearing rotation, and the top welding of polished rod (202) has first conical gear (203), the right-hand member of first conical gear (203) is connected with second conical gear (204), and the outer end welding of second conical gear (204) has lead screw (205), the surface cover of lead screw (205) is equipped with first slider (206), and the top of first slider (206) articulates there is first bracing piece (207), the end of first bracing piece (207) articulates there is supporting shoe (208).

2. The over-roof stone pre-tensioning fall protection device of claim 1, wherein: the first conical gear (203) is connected with the second conical gear (204) in a meshed mode, the first sliding block (206) is connected with the screw rod (205) in a threaded mode, a sliding groove (2010) is formed in the base (1), and the first sliding block (206) and the base (1) form a sliding structure through the sliding groove (2010).

3. The over-roof stone pre-tensioning fall protection device of claim 1, wherein: an operation platform (209) is welded at the top end of the supporting block (208), two first sliding blocks (206) are arranged in total, and the two first sliding blocks (206) are symmetrically arranged relative to the central line of the operation platform (209).

4. A over-roof stone pre-tensioning fall arrest device according to claim 3, wherein: the surface of operation platform (209) has seted up spout (2010), and the inside sliding connection of spout (2010) has second slider (2012), the top welding of second slider (2012) has support column (2011), and the top welding of support column (2011) has jack (2013).

5. The over-roof stone pre-tensioning fall protection device of claim 4, wherein: the support column (2011) and the operation platform (209) form a sliding structure through a second sliding block (2012), and the center line of the jack (2013) is overlapped with the center line of the support column (2011).

6. The over-roof stone pre-tensioning fall protection device of claim 1, wherein: the inside welding of base (1) has telescopic link (402), and the inside of telescopic link (402) is provided with first reset spring (403), bayonet socket (4012) have been seted up on the surface of telescopic link (402), and the bottom welding of telescopic link (402) has second bracing piece (408), the bottom welding of second bracing piece (408) has antiskid ribbed tile (409).

7. The over-roof stone pre-tensioning fall protection device of claim 6, wherein: the second support rod (408) and the base (1) form a lifting structure through the telescopic rod (402), and the second support rod (408) and the telescopic rod (402) form an elastic structure through the first reset spring (403).

8. The over-roof stone pre-tensioning fall protection device of claim 1, wherein: the inside welding of base (1) has inner shell (401), and the inside of inner shell (401) is provided with second reset spring (405), the front end welding of second reset spring (405) has stopper (404), and the inside of stopper (404) runs through has bolt (406), the outer end welding of bolt (406) has pressing block (407).