CN111321670A - A mobile protective device for bridge engineering construction - Google Patents

Abstract

The invention specifically relates to a mobile protection device for bridge engineering construction, which solves the problems of low safety factor and low operation efficiency in the use of the existing steel pipe construction platform. A mobile protective device for bridge engineering construction. The protective platform includes a support plate and a protective frame; the lifting device includes a scissor lift frame, two upper connecting seats and two lower connecting seats; The sliding rod is sleeved with a sliding block, and the two upper connecting seats are respectively fixed on the lower surfaces of the two sliding blocks; a threaded rod is arranged on the upper surface of the base, and the two lower connecting seats are threadedly connected to the side surfaces of the threaded rod; A motor is arranged behind the fixing block, a driving gear is fixedly assembled on the right end of the output shaft of the motor, and a driven gear is fixedly assembled on the threaded rod. The invention achieves the purpose of flexibly adjusting the height of the protective device with the construction progress, can effectively guarantee the personal safety of the operators, is simple and convenient to operate, and effectively improves the construction efficiency.

Description

A mobile protective device for bridge engineering construction

technical field

The invention relates to a protective device for bridge engineering, in particular to a mobile protective device for bridge engineering construction.

Background technique

In bridge engineering, construction is divided into substructure construction, superstructure construction, beam bridge construction and so on. Among them, platforms constructed of steel pipes are commonly used in the construction of substructures (such as bridge piers and pier foundations).

However, practice shows that the existing steel pipe construction platform has the following problems in use: First, the steel pipe construction platform has a simple structure, insufficient firmness, poor stability, low safety factor, easy safety accidents, and poor personal safety of operators. The second is that the platform built each time can only be used for construction operations of a specific height. When the height of the bridge pier is changed, the platform needs to be rebuilt to adjust the height of the platform to adapt to the construction progress, which is time-consuming and labor-intensive, and is not convenient enough to use. Construction progress, resulting in low operating efficiency.

SUMMARY OF THE INVENTION

In order to solve the problems of low safety factor and low operation efficiency in use of the existing steel pipe construction platform, the present invention provides a mobile protection device for bridge engineering construction.

The present invention adopts following technical scheme to realize:

A mobile protective device for bridge engineering construction, comprising bridge piers; also comprising a horizontally placed base, a protective platform located above the base, and a lifting device located between the two;

The lower surface of the base is provided with several walking wheels;

The protective platform includes a support plate arranged horizontally just above the base and a protective frame vertically arranged on the edge of the support plate. The bridge pier is arranged in front of the protective frame, and the left and right sides of the protective frame are provided with a vertical edge. The connecting plates placed in the front and rear directions, the front ends of the two connecting plates are respectively provided with two electric push rods located in front of the protective frame and placed symmetrically along the left and right directions, and the push rods of the two electric push rods are both directed towards the bridge pier;

The lifting device comprises a scissor lift frame; the upper ends of the two scissor arms of the scissor lift frame are respectively hinged with two upper connecting seats, and the lower ends are respectively hinged with two lower connecting seats with assembling screw holes;

The middle part of the lower surface of the support plate is provided with a chute, a sliding rod is arranged between the left side wall and the right side wall of the chute, and two sliding blocks that can slide left and right are sleeved on the sliding rod, and the two upper connecting seats are respectively fixed On the lower surfaces of the two sliders; the left and right ends of the lower surface of the support plate are provided with a support block, which is located between the upper connecting seat on the left and the supporting block on the left, and the upper connecting seat on the right is connected to the A telescopic rod placed along the left and right directions is arranged between the support blocks on the right side;

The upper surface of the base is provided with two fixed blocks distributed left and right, and a rotatable threaded rod is set between the two fixed blocks, and the thread directions of the left part and the right part of the side surface of the threaded rod are opposite, and the two lower connecting seats are respectively threaded It is connected to the left and right parts of the side surface of the threaded rod; behind the fixing block on the left side is a motor with the output shaft facing to the right, the right end of the motor output shaft is fixedly fitted with a driving gear, and the left end of the threaded rod is fixed A driven gear that meshes with the driving gear is assembled.

When working, first push the protective device to the construction pier through the walking wheel, then start the two electric push rods, and adjust the distance between the two push rods until the two push rods are close to the side of the pier, so as to prevent the protective device from operating at the pier. Shake during the lifting process; then start the motor, the motor output shaft rotates to drive the driving gear to rotate, and then drives the driven gear to rotate, and the driven gear rotates to drive the threaded rod to rotate, thereby driving the two lower connecting seats to move towards each other, and then in the scissor type Under the action of the connecting rods of the two scissor arms of the lifting frame, the two upper connecting seats are moved toward each other. The length of the rod is elongated, so that the left and right movements of the two upper connecting seats are more stable, so that the scissor lift frame can be raised, and the protective platform can be lifted to the target height, thereby completing the installation of the protective device. During use, when the construction height is changed, it is only necessary to start the motor again, and adjust the height of the protective platform through a series of transmissions of the driving gear, the driven gear, the threaded rod, the lower connecting seat and the upper connecting seat to adapt to the construction. When the height changes, there is no need to re-build the device, which effectively improves the work efficiency. The invention overcomes the problems of low safety factor and low operation efficiency in use of the existing steel pipe construction platform.

The outer end of the push rod of each electric push rod is provided with a roller that rolls on the side wall of the bridge pier along the front and rear directions.

The structure is designed to facilitate the contact between the protective frame and the bridge pier, and the operation is simple and convenient.

The protective frame is a rectangular structure; a protective plate is arranged directly above the protective frame, and the protective frame and the protective plate are connected by a plurality of support rods arranged on the upper surfaces of the left and right frame edges of the protective frame; each connecting plate and the protective frame are Connected by two connecting rods.

The protective plate can provide protection for the operators, avoid the damage to the operators caused by falling rocks during the construction process, and further improve the safety of the protection device.

Each telescopic rod is a telescopic sleeve, the left end and the right end of each telescopic rod are fixedly sleeved with a snap ring, and the outer side is provided with a return spring located between the two snap rings.

The return spring makes the left and right sliding of the upper connecting seat more stable and coherent, thereby increasing the stability of the protection device during the lifting process.

The left and right sides of the base are provided with a fixed lug plate horizontally, and each fixed lug plate is threadedly connected with a positioning pin that penetrates up and down; the number of walking wheels is four; the four walking wheels are respectively arranged under the base the four corners of the surface.

The traveling wheel realizes the flexible movement of the protective device, and the positioning pin can stably fix the protective device on the ground, thereby ensuring the stability of the entire device in use.

The upper surface of the base is provided with a support plate with guide ball grooves horizontally, and the guide ball grooves are arranged in the left and right directions; each lower connecting seat is installed with a ball through the arc connecting block, and the two balls are rolled and assembled on the support. in the guide ball groove of the plate.

The balls and the guide ball groove can provide support for the two lower connecting seats on the basis of ensuring the stable movement of the two lower connecting seats, thereby improving the structural firmness of the protective device and increasing the service life of the protective device.

A sleeve is fixed on each of the two fixing blocks, and the two ends of the threaded rod are respectively rotated and passed through the two sleeves; the side of the threaded rod is extended with three retaining rings distributed at equal intervals, and the driven gear is fixedly sleeved in the two sleeves. On the retaining ring on the left side, two lower connecting seats and three retaining rings are alternately arranged; the part between the three retaining rings on the side of the threaded rod is a threaded surface, and the rest of the side of the threaded rod is a smooth surface.

The retaining ring can provide a limiting effect for the movement of the two lower connecting seats, thereby improving the accuracy of the protection device for height control of the protection platform.

The structure of the invention is reasonable and reliable, realizes the purpose of flexibly adjusting the height of the protective device with the construction progress, and has a high safety factor, which can effectively protect the personal safety of the operators, and at the same time, the operation is simple and convenient, and the construction efficiency is effectively improved, and further, the structure is firm. , Good stability during use, highly accurate control and long service life.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the partial enlarged schematic diagram of A place in Fig. 1;

Figure 3 is a top view of the base of the present invention.

In the figure, 1-base, 2-travel wheel, 3-supporting plate, 4-protective frame, 5-connecting plate, 6-electric push rod, 7-scissor lift, 8-upper connecting seat, 9-lower Connection base, 10-chute, 11-slide rod, 12-slider, 13-support block, 14- telescopic rod, 15-fixed block, 16-threaded rod, 17-motor, 18-drive gear, 19-slave Moving gear, 20-roller, 21-protection plate, 22-support rod, 23-connecting rod, 24-retaining ring, 25-return spring, 26-fixed lug plate, 27-positioning pin, 28-support plate, 29- Arc connecting block, 30-ball, 31-sleeve, 32-backstop.

Detailed ways

A mobile protective device for bridge engineering construction, comprising a bridge pier; also comprising a horizontally placed base 1, a protective platform located above the base 1 and a lifting device located between the two;

The lower surface of the base 1 is provided with several walking wheels 2;

The protection platform includes a support plate 3 that is horizontally arranged just above the base 1 and a protection frame 4 that is vertically arranged at the edge of the support plate 3. The bridge pier is arranged in front of the protection frame 4, and the left and right sides of the protection frame 4 are both. A connecting plate 5 is arranged vertically along the front-rear direction, and the front ends of the two connecting plates 5 are respectively provided with two electric push rods 6 located in front of the protective frame 4 and placed symmetrically along the left-right direction, and the two electric push rods The direction of the push rod of rod 6 is all towards the bridge pier;

The lifting device includes a scissor lift frame 7; the upper ends of the two scissor arms of the scissor lift frame 7 are respectively hinged with two upper connecting seats 8, and the lower ends are respectively hinged with two lower ends with assembly screw holes. connection seat 9;

A chute 10 is opened in the middle of the lower surface of the support plate 3 , a sliding rod 11 is arranged between the left side wall and the right side wall of the chute 10 , and two sliding blocks 12 that can slide left and right are sleeved on the sliding rod 11 . Each upper connecting seat 8 is respectively fixed on the lower surfaces of the two sliders 12; the left and right ends of the lower surface of the support plate 3 are provided with a supporting block 13, the upper connecting seat 8 on the left side and the supporting block on the left side A telescopic rod 14 placed along the left and right directions is provided between the 13 and between the upper connecting seat 8 on the right side and the support block 13 on the right side;

The upper surface of the base 1 is provided with two fixed blocks 15 distributed left and right, a rotatable threaded rod 16 is provided between the two fixed blocks 15, and the thread directions of the left part and the right part of the side surface of the threaded rod 16 are opposite. The lower connecting seat 9 is respectively threadedly connected to the left part and the right part of the side surface of the threaded rod 16; behind the fixing block 15 on the left side is provided a motor 17 whose output shaft is directed to the right, and the right end of the output shaft of the motor 17 is fixedly assembled with a motor 17. A driving gear 18, the left end of the threaded rod 16 is fixedly fitted with a driven gear 19 meshing with the driving gear 18.

The outer end of the push rod of each electric push rod 6 is provided with a roller 20 that rolls on the side wall of the bridge pier in the front-rear direction.

The protective frame 4 is a rectangular structure; a protective plate 21 is provided directly above the protective frame 4, and the protective frame 4 and the protective plate 21 are connected by a plurality of support rods 22 arranged on the upper surfaces of the left and right frame edges of the protective frame 4; each Each connecting plate 5 and the protective frame 4 are connected by two connecting rods 23 .

Each telescopic rod 14 is a telescopic sleeve, the left end and the right end of each telescopic rod 14 are fixedly sleeved with a snap ring 24 , and the outer side is provided with a return spring located between the two snap rings 24 . 25.

The left and right sides of the base 1 are provided with a fixed lug plate 26 horizontally, and each fixed lug plate 26 is threadedly connected with a positioning pin 27 that penetrates up and down; the number of the traveling wheels 2 is four; 2 are respectively arranged on the four corners of the lower surface of the base 1 .

The upper surface of the base 1 is horizontally provided with a support plate 28 with guiding ball grooves, and the guiding ball grooves are arranged in the left-right direction; each lower connecting seat 9 is installed with a ball 30 through an arc-shaped connecting block 29, and two balls are installed 30 are rolled and assembled in the guide ball groove of the support plate 28 .

A sleeve 31 is fixed on each of the two fixing blocks 15, and the two ends of the threaded rod 16 are respectively rotated through the two sleeves 31; The movable gear 19 is fixedly sleeved on the retaining ring 32 on the left side, and the two lower connecting seats 9 and the three retaining rings 32 are alternately arranged; the part between the three retaining rings 32 on the side of the threaded rod 16 is a threaded surface, and The rest of the sides of the threaded rod 16 are smooth.

In the specific implementation process, the two upper connecting bases 8 and the two lower connecting bases 9 are both hinged to the ends of the scissor arms of the scissor lift frame 7 through the rotating shaft.

Claims (7)

1. A mobile protective device for bridge engineering construction, comprising a bridge pier; characterized in that: it also comprises a horizontally placed base (1), a protective platform positioned above the base (1), and a lifting device positioned between the two ; The lower surface of the base (1) is provided with several traveling wheels (2); The protective platform comprises a support plate (3) arranged horizontally directly above the base (1) and a protective frame (4) vertically arranged on the edge of the support plate (3), and the bridge pier is arranged in front of the protective frame (4), The left and right sides of the protective frame (4) are vertically provided with a connecting plate (5) placed in the front-rear direction, and the front ends of the two connecting plates (5) are respectively provided with two connecting plates (5) located in the protective frame (4). The electric push rods (6) placed in front and symmetrically along the left and right directions, and the push rods of the two electric push rods (6) are both directed towards the bridge pier; The lifting device includes a scissor lift frame (7); the upper ends of the two scissor arms of the scissor lift frame (7) are respectively hinged with two upper connecting seats (8), and the lower ends are hinged with two belts respectively A lower connecting seat (9) with mounting screw holes; A chute (10) is provided in the middle of the lower surface of the support plate (3), a sliding rod (11) is arranged between the left side wall and the right side wall of the chute (10), and two sliding rods (11) are sleeved on the sliding rod (11). There are two sliders (12) that can slide left and right, the two upper connecting seats (8) are respectively fixed on the lower surfaces of the two sliders (12); the left and right ends of the lower surface of the support plate (3) are provided with a support Block (13), between the upper connecting seat (8) on the left and the supporting block (13) on the left, and between the upper connecting seat (8) on the right and the supporting block (13) on the right Each is provided with a telescopic rod (14) placed along the left and right directions; The upper surface of the base (1) is provided with two fixed blocks (15) distributed left and right, a rotatable threaded rod (16) is provided between the two fixed blocks (15), and the left side of the threaded rod (16) Opposite to the thread direction of the right part, the two lower connecting seats (9) are respectively threadedly connected to the left part and the right part of the side surface of the threaded rod (16); an output shaft direction is arranged behind the fixing block (15) on the left side. The motor (17) facing right, the right end of the output shaft of the motor (17) is fixedly fitted with a driving gear (18), and the left end of the threaded rod (16) is fixedly fitted with a driven gear that meshes with the driving gear (18). (19). 2. A mobile protective device for bridge engineering construction according to claim 1, characterized in that: the outer end of the push rod of each electric push rod (6) is provided with a Rollers (20) on the side walls of the piers. 3. A mobile protective device for bridge engineering construction according to claim 1, characterized in that: the protective frame (4) is a rectangular structure; a protective plate (21) is provided directly above the protective frame (4). ), the protective frame (4) and the protective plate (21) are connected by a number of support rods (22) arranged on the upper surfaces of the left and right frame edges of the protective frame (4); each connecting plate (5) is connected to the protective frame ( 4) Both are connected by two connecting rods (23). 4. A mobile protective device for bridge engineering construction according to claim 1, characterized in that: each telescopic rod (14) is a telescopic sleeve, and the left end of each telescopic rod (14) A snap ring (24) is fixedly sleeved with the right end, and a return spring (25) located between the two snap rings (24) is sleeved on the outer side. 5. A mobile protective device for bridge engineering construction according to claim 1, characterized in that: a fixed lug (26) is arranged horizontally on the left and right sides of the base (1), and each The fixing lugs (26) are all screwed with a positioning pin (27) penetrating up and down; the number of traveling wheels (2) is four; corner. 6. A mobile protective device for bridge engineering construction according to claim 1, characterized in that: the upper surface of the base (1) is horizontally provided with a support plate (28) with a guiding ball groove, and the guiding The ball grooves are arranged in the left-right direction; each lower connecting seat (9) is installed with a ball (30) through the arc-shaped connecting block (29), and the two balls (30) are rollingly assembled on the guide of the support plate (28) inside the ball slot. 7. A mobile protective device for bridge engineering construction according to claim 1, characterized in that: a sleeve (31) is fixed on each of the two fixing blocks (15), and the threaded rod (16) is The two ends are respectively rotatably passed through the two sleeves (31); the side surface of the threaded rod (16) is extended with three retaining rings (32) distributed at equal intervals, and the driven gear (19) is fixedly sleeved on the left side On the retaining ring (32) of the threaded rod (16), the two lower connecting seats (9) and the three retaining rings (32) are staggered; the part between the three retaining rings (32) on the side of the threaded rod (16) is a threaded surface, and The rest of the sides of the threaded rod (16) are smooth.

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