High-speed rail bridge construction platform lifting device

Abstract

The utility model discloses a high-speed railway bridge construction platform lifting device, which relates to the technical field of construction platforms, and comprises a main body mechanism, a bottom plate and two guide rail plates arranged on the bottom plate, a platform plate is arranged between the two guide rail plates, and a hoisting assembly used for lifting the platform plate is arranged on one side of the bottom plate; and the protection mechanism comprises a pressure-bearing rod arranged on the upper wall of the top cover, the upper end of the pressure-bearing rod is fixedly connected with a contact block, and a damping assembly used for extruding and buffering with the contact block is arranged on one side above the guide rail plate. According to the high-speed railway bridge construction platform lifting device, the pressure-bearing rod and the contact block are arranged on the upper wall of the top cover, when the platform plate ascends to be about to make contact with the cross beam, the damping assembly is arranged on one side above the guide rail plate, at the moment, the contact block makes contact with and is attached to the attaching block and extrudes the attaching block, and the spring is compressed; the damping rod is in damping sliding fit with the inner wall of the cavity groove of the damping cylinder, and then hard collision caused by overlarge kinetic energy when the top cover stops is reduced through the function conversion consumption principle.

Description

Technical Field

[0001] The utility model relates to the technical field of construction platforms, in particular to a lifting device for a high-speed railway bridge construction platform. Background Art

[0002] A bridge construction platform refers to a work site set up for water-based construction of bridge foundations. A fixed water work platform is a common structural form. The traditional fixed platform is designed as a π-shaped structure. During construction, the entire platform is fixed on the steel beam. The platform needs to be lifted and moved by lifting equipment such as a bridge deck crane. During this process, construction workers need to install and dismantle the platform in the air, which poses a very high safety risk. At the same time, due to the cantilever lifting of steel beams, high-bolt construction, and installation of small longitudinal beams, construction workers are all working at high altitudes and in suspension, which poses a high safety risk and has a greater psychological impact on the workers. Therefore, a safe bridge construction platform is needed.

[0003] After searching, a Chinese patent with publication number CN 213625233 U mentioned a safe high-speed railway bridge construction platform, including a device body, the device body is fixedly connected to a base, a hydraulic telescopic rod is fixedly connected under the base, a driving mechanism and an anti-fall mechanism are arranged on the device body, the motor drives the lifting platform to move through the motor shaft, coupling, rotating shaft, drum and wire rope, the reducer can prevent the construction platform from falling quickly when the motor fails, when the wire rope loses control of the construction platform, the pressure data of the pressure sensor is very small or even zero, the first magnet is energized and the magnetism changes, the first magnet and the second magnet repel each other with the same polarity, the second magnet rotates around the rotating shaft and cooperates with the claw to clamp, so that the working platform stops descending, which has the advantage of high safety.

[0004] The above-mentioned device has disadvantages in its specific use. Although the above-mentioned device plays a decelerating role by setting a reducer, in actual use, when the construction platform rises to the highest point, due to the effect of inertia, the top position of the construction platform will still contact the top of the mounting frame and produce slight vibration. On the one hand, long-term vibration causes structural damage, and on the other hand, it has a great psychological impact on personnel. Utility Model Content

[0005] The purpose of the utility model is to provide a high-speed railway bridge construction platform lifting device to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above problems, the technical solutions adopted by the utility model are as follows:

[0007] A high-speed railway bridge construction platform lifting device, comprising

[0008] The main body mechanism comprises a bottom plate and two guide rail plates arranged on the bottom plate, a platform plate is arranged between the two guide rail plates, a top cover is fixedly connected to the upper wall of the platform plate, and a lifting assembly for lifting the platform plate is arranged on one side of the bottom plate;

[0009] The protection mechanism comprises a pressure-bearing rod arranged on the upper wall of the top cover, the upper end of the pressure-bearing rod is fixedly connected with a contact block, and a damping component for compressing and buffering with the contact block is arranged on one side above the guide plate.

[0010] Preferably, the side wall of the guide rail plate is provided with a square slide groove opening, a slider is slidably connected inside the square slide groove opening, and one side wall of the slider is fixedly connected to one side wall of the platform plate.

[0011] Preferably, the lifting assembly includes a crossbeam, a first guide wheel and a second guide wheel, the lower wall of the crossbeam is fixedly connected to the upper walls of two guide rail plates, the first guide wheel is fixedly arranged on the crossbeam, and the second guide wheel is fixedly arranged on one side wall of the guide rail plate.

[0012] Preferably, the lifting assembly also includes a reduction motor, a drum and a wire rope. A mounting plate is fixedly connected to one side wall of the base plate. The reduction motor is fixedly arranged on the mounting plate through a mounting seat. A connecting shaft is provided at one end of the drum. The output end of the reduction motor is connected to the end of the connecting shaft through a coupling. One end of the wire rope is wound around the outside of the drum, and the other end of the wire rope passes through the upper wall of the beam via the second guide wheel and the first guide wheel and extends to the bottom of the beam and is fixedly connected to the upper wall of the top cover.

[0013] Preferably, a support rod is fixedly connected to the upper wall of the mounting plate, an adapter tube is fixedly connected to the upper end of the support rod, an adapter shaft is fixedly connected to the end of the reel away from the connecting shaft, and one end of the adapter shaft is rotatably matched with the inner wall of the cavity groove at the end of the adapter tube.

[0014] Preferably, the damping assembly includes a damping cylinder, a damping rod, a spring and a fitting block. A fixing plate is fixedly connected to a side wall above the guide plate. The upper end of the damping cylinder is fixedly connected to the lower wall of the fixing plate. The upper end of the damping rod is slidably connected to the inner wall of the damping cylinder cavity. The upper wall of the fitting block is fixedly connected to the lower end of the damping rod. The spring is arranged between the fitting block and the damping cylinder, and the spring is sleeved on the outside of the damping rod.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model arranges a pressure-bearing rod and a contact block on the upper wall of the top cover. When the platform plate rises to be about to contact the cross beam, a damping assembly is provided on one side above the guide rail plate. At this time, the contact block contacts, fits and squeezes the fitting block, the spring is compressed, and the damping rod and the inner wall of the damping cylinder cavity groove are damped and slidably matched. Then, through the function conversion consumption principle, the excessive kinetic energy when the top cover stops, which causes a hard collision, is reduced.

[0017] In order to ensure the stability of the reel rotation, the utility model arranges an adapter shaft at the end of the reel. During the rotation of the reel, the adapter shaft rotates and rotates with the inner wall of the adapter cylinder cavity groove, thereby ensuring the stability of the overall rotation of the reel. The structural design is humanized. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall external structure of a high-speed railway bridge construction platform lifting device;

[0019] Figure 2 It is a first-person structural diagram of a high-speed railway bridge construction platform lifting device;

[0020] Figure 3 It is a second perspective structural schematic diagram of a high-speed railway bridge construction platform lifting device;

[0021] Figure 4 It is a partial structural schematic diagram of a high-speed railway bridge construction platform lifting device;

[0022] Figure 5 A high-speed railway bridge construction platform lifting device Figure 4 A partial enlarged view of point A in the middle.

[0023] In the figure: 100, main body; 101, bottom plate; 102, guide plate; 103, platform plate; 104, top cover; 105, slider; 106, crossbeam; 107, first guide wheel; 108, second guide wheel; 109, reduction motor; 110, reel; 111, wire rope; 112, mounting plate; 113, support rod; 114, adapter cylinder; 115, adapter shaft; 200, protection mechanism; 201, pressure rod; 202, contact block; 203, damping cylinder; 204, damping rod; 205, spring; 206, fitting block; 207, fixing plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Embodiment 1:

[0026] See also Figure 1-Figure 5 As shown, the utility model is a high-speed railway bridge construction platform lifting device, comprising

[0027] The main body mechanism 100 includes a bottom plate 101 and two guide rail plates 102 arranged on the bottom plate 101, a platform plate 103 is arranged between the two guide rail plates 102, a top cover 104 is fixedly connected to the upper wall of the platform plate 103, and a lifting assembly for lifting the platform plate 103 is arranged on one side of the bottom plate 101;

[0028] The protection mechanism 200 includes a pressure rod 201 disposed on the upper wall of the top cover 104 , the upper end of the pressure rod 201 is fixedly connected to a contact block 202 , and a damping component for compressing and buffering with the contact block 202 is disposed on one side above the guide plate 102 .

[0029] Depend on Figure 1-Figure 4 It can be seen that a square sliding groove is provided on the side wall of the guide plate 102 , and a slider 105 is slidably connected inside the square sliding groove. A side wall of the slider 105 is fixedly connected to a side wall of the platform plate 103 .

[0030] The lifting assembly includes a crossbeam 106 , a first guide wheel 107 and a second guide wheel 108 . The lower wall of the crossbeam 106 is fixedly connected to the upper walls of the two guide rail plates 102 . The first guide wheel 107 is fixedly arranged on the crossbeam 106 , and the second guide wheel 108 is fixedly arranged on a side wall of the guide rail plate 102 .

[0031] The lifting assembly also includes a reduction motor 109, a drum 110 and a wire rope 111. A mounting plate 112 is fixedly connected to one side wall of the base plate 101. The reduction motor 109 is fixedly arranged on the mounting plate 112 through a mounting seat. A connecting shaft is provided at one end of the drum 110. The output end of the reduction motor 109 is connected to the end of the connecting shaft through a coupling. One end of the wire rope 111 is wound around the outside of the drum 110, and the other end of the wire rope 111 passes through the upper wall of the beam 106 through the second guide wheel 108 and the first guide wheel 107 and extends to the bottom of the beam 106 and is fixedly connected to the upper wall of the top cover 104.

[0032] A support rod 113 is fixedly connected to the upper wall of the mounting plate 112, an adapter tube 114 is fixedly connected to the upper end of the support rod 113, an adapter shaft 115 is fixedly connected to the end of the reel 110 away from the connecting shaft, and one end of the adapter shaft 115 is rotatably matched with the inner wall of the cavity groove at the end of the adapter tube 114.

[0033] As can be seen from the above, when in use, the staff stands on the platform plate 103, and then drives the reduction motor 109, which drives the reel 110 to rotate, and further reels the wire rope 111. At this time, the slider 105 slides with the square sliding groove provided on the side wall of the guide plate 102, and then drives the platform plate 103 to rise stably;

[0034] Among them, in order to ensure the stability of the rotation of the reel 110, an adapter shaft 115 is set at the end of the reel 110. During the rotation of the reel 110, the adapter shaft 115 rotates and rotates with the inner wall of the cavity of the adapter tube 114, thereby ensuring the stability of the overall rotation of the reel 110. The structural design is user-friendly.

[0035] Embodiment 2:

[0036] refer to Figure 1 , Figure 4 and Figure 5 As shown, the damping assembly includes a damping cylinder 203, a damping rod 204, a spring 205 and a fitting block 206. A fixing plate 207 is fixedly connected to a side wall above the guide plate 102. The upper end of the damping cylinder 203 is fixedly connected to the lower wall of the fixing plate 207. The upper end of the damping rod 204 is slidably connected to the inner wall of the cavity of the damping cylinder 203. The upper wall of the fitting block 206 is fixedly connected to the lower end of the damping rod 204. The spring 205 is arranged between the fitting block 206 and the damping cylinder 203, and the spring 205 is sleeved on the outside of the damping rod 204.

[0037] As can be seen from the above, when the platform plate rises to the highest point, in order to avoid slight vibration caused by hard contact between the top cover 104 and the cross beam 106, at this time, a pressure rod 201 and a contact block 202 are arranged on the upper wall of the top cover 104. When the platform plate rises to the point where it is about to contact the cross beam 106, a damping assembly is arranged on the upper side of the guide plate 102. At this time, the contact block 202 is in contact with and squeezed by the fitting block 206, the spring 205 is compressed, and the damping rod 204 is damped and slidably matched with the inner wall of the cavity of the damping cylinder 203. Then, through the principle of functional conversion consumption, the excessive kinetic energy of the top cover 104 when it stops, which causes a hard collision, is reduced.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-speed railway bridge construction platform lifting device, characterized in that: include The main body mechanism (100) comprises a bottom plate (101) and two guide rail plates (102) arranged on the bottom plate (101); a platform plate (103) is arranged between the two guide rail plates (102); a top cover (104) is fixedly connected to the upper wall of the platform plate (103); and a lifting assembly for lifting the platform plate (103) is arranged on one side of the bottom plate (101); The protection mechanism (200) comprises a pressure-bearing rod (201) arranged on the upper wall of the top cover (104), the upper end of the pressure-bearing rod (201) being fixedly connected to a contact block (202), and a damping component for compressing and buffering with the contact block (202) being provided on one side above the guide plate (102).

2. A high-speed railway bridge construction platform lifting device according to claim 1, characterized in that: The side wall of the guide rail plate (102) is provided with a square sliding groove opening, a slider (105) is slidably connected inside the square sliding groove opening, and a side wall of the slider (105) is fixedly connected to a side wall of the platform plate (103).

3. The high-speed railway bridge construction platform lifting device according to claim 1 is characterized by: The lifting assembly comprises a crossbeam (106), a first guide wheel (107) and a second guide wheel (108); the lower wall of the crossbeam (106) is fixedly connected to the upper walls of two guide rail plates (102); the first guide wheel (107) is fixedly arranged on the crossbeam (106), and the second guide wheel (108) is fixedly arranged on a side wall of the guide rail plate (102).

4. A high-speed railway bridge construction platform lifting device according to claim 3, characterized in that: The lifting assembly also includes a reduction motor (109), a drum (110) and a steel wire rope (111); a mounting plate (112) is fixedly connected to one side wall of the base plate (101); the reduction motor (109) is fixedly arranged on the mounting plate (112) via a mounting seat; a connecting shaft is provided at one end of the drum (110); the output end of the reduction motor (109) is connected to the end of the connecting shaft via a coupling; one end of the steel wire rope (111) is wound around the outside of the drum (110); the other end of the steel wire rope (111) passes through the upper wall of the cross beam (106) via a second guide wheel (108) and a first guide wheel (107) and extends to the bottom of the cross beam (106) and is fixedly connected to the upper wall of the top cover (104).

5. A high-speed railway bridge construction platform lifting device according to claim 4, characterized in that: The upper wall of the mounting plate (112) is fixedly connected to a support rod (113), the upper end of the support rod (113) is fixedly connected to an adapter tube (114), the end of the reel (110) away from the connecting shaft is fixedly connected to an adapter shaft (115), and one end of the adapter shaft (115) is rotatably matched with the inner wall of the cavity groove at the end of the adapter tube (114).

6. The high-speed railway bridge construction platform lifting device according to claim 1 is characterized by: The damping assembly comprises a damping cylinder (203), a damping rod (204), a spring (205) and a fitting block (206); a fixing plate (207) is fixedly connected to a side wall above the guide rail plate (102); the upper end of the damping cylinder (203) is fixedly connected to the lower wall of the fixing plate (207); the upper end of the damping rod (204) is slidably connected to the inner wall of the cavity of the damping cylinder (203); the upper wall of the fitting block (206) is fixedly connected to the lower end of the damping rod (204); the spring (205) is arranged between the fitting block (206) and the damping cylinder (203); and the spring (205) is sleeved on the outside of the damping rod (204).

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