Deviation rectifying device for bridge crane

Abstract

The utility model relates to a bridge crane deviation rectifying device which comprises a first U-shaped block, moving wheels are rotationally installed in the first U-shaped block, an encoder and a controller are installed on the outer surface of one side of the first U-shaped block, a U-shaped support is installed on the outer surface of the first U-shaped block, and guide rods and two first limiting rods transversely penetrate through the two sides of the U-shaped support. The two first limiting rods are arranged on the upper side and the lower side of the guide rod correspondingly, first wedge-shaped blocks are installed at one ends of the guide rod and the two first limiting rods, and friction blocks are arranged at the other ends of the guide rod and the two first limiting rods. Through grooves are formed in the two side walls of the U-shaped support. The electric push rod drives the lifting plate to descend, the friction blocks on the two sides extrude the two sides of the guide rail at the same time, the purpose of reducing the speed of the moving wheel is achieved, and due to the fact that acting force is generated on the two sides at the same time, the situation that the moving wheel transversely moves on the guide rail, friction is generated between the inner wall of the moving wheel and the guide rail, and the service life of the moving wheel is shortened can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to a deviation-correcting device for a bridge crane. Background Art

[0002] Bridge crane is a common lifting equipment, usually used in industry and construction sites. Its structure is similar to a bridge, which can span the working area, support and move the lifting objects. Bridge crane usually consists of a bridge, hook, motor and track, and can run on the spanning structure with the help of pillars or brackets on both sides.

[0003] When the outriggers on both sides of the bridge crane are moving, they may become asynchronous, which will increase the difference in the travel distances of the outriggers on both sides and cause the outriggers to deviate. Therefore, a correction device is needed.

[0004] When the existing correction device detects through the encoder that the rotation speeds of the moving wheels on both sides are inconsistent, the friction block will be used to squeeze the guide rail, thereby slowing down the moving wheel on the faster side to achieve the purpose of correction. However, in the prior art, the friction block is located on one side of the moving wheel. When the friction block is pressed against the guide rail, the reaction force generated can easily cause the moving wheel to shift laterally and cause the inner wall of the moving wheel to rub against the guide rail, thereby reducing the service life of the moving wheel. Utility Model Content

[0005] The utility model aims to provide a deviation-correcting device for a bridge crane which can avoid friction between the interior of a moving wheel and a guide rail and increase the service life of the moving wheel.

[0006] To achieve the above-mentioned purpose, the technical solution of the utility model is as follows.

[0007] A deviation correction device for a bridge crane comprises a first U-shaped block, a moving wheel is rotatably installed inside the first U-shaped block, an encoder and a controller are respectively installed on the outer surface of one side of the first U-shaped block, a U-shaped bracket is installed on the outer surface of the first U-shaped block, a guide rod and two first limit rods are horizontally penetrated on both sides of the U-shaped bracket, and the two first limit rods are respectively arranged on the upper and lower sides of the guide rod, a first wedge block is installed on one end of the guide rod and the two first limit rods, and a friction block is arranged on the other end of the guide rod and the two first limit rods. Through grooves are provided on both side walls of the U-shaped bracket, and lifting plates are slidably installed inside the two through grooves, an electric push rod is installed on the upper surface of the U-shaped bracket, the end of the telescopic end of the electric push rod is connected to the lifting plate, and second wedge blocks are installed on both ends of the lifting plate in the length direction, and the second wedge block is adapted to the first wedge block.

[0008] It can be seen that the lifting plate is driven down by the electric push rod, so that the two second wedge blocks squeeze the two first wedge blocks at the same time, and then the friction blocks on both sides squeeze the two sides of the guide rail at the same time, so as to achieve the purpose of decelerating the moving wheel. Moreover, since the force is applied on both sides at the same time, the lateral displacement of the moving wheel on the guide rail can be avoided, and the inner wall of the moving wheel can be rubbed against the guide rail, thereby reducing the service life of the moving wheel. Moreover, due to the arrangement of the friction blocks on both sides, the deceleration effect of the moving wheel can be better, thereby improving the deviation correction effect of the moving wheel.

[0009] Furthermore, two mounting blocks are installed on the outer surface of one side of the first U-shaped block away from the U-shaped bracket, a second U-shaped block is installed at the end of the mounting block, and a guide wheel is rotatably installed inside the second U-shaped block.

[0010] The two guide wheels are in contact with both sides of the guide rail at the same time, which can achieve the purpose of guiding the two side surfaces, avoid lateral displacement of the moving wheel during the movement of the guide rail, which causes friction between the inner wall of the moving wheel and the guide rail, and improve the stability and safety of the moving wheel during movement, thereby achieving better use effect.

[0011] Furthermore, a mounting seat is installed on the top of the first U-shaped block, and mounting holes are provided at the four corners of the mounting seat.

[0012] By setting the mounting seat and the mounting hole, the device can be installed on the outrigger of the bridge crane, and when the device fails or is damaged, it can be dismantled and replaced.

[0013] Furthermore, a fixing block is commonly mounted on the ends of the guide rod and the two first limit rods, and the friction block is mounted on the outside of the fixing block by means of bolts.

[0014] Through the setting of the fixing block and the bolt, the friction block is used as a consumable part. When it needs to be replaced, the bolt can be unscrewed, and then the friction block can be removed and a new friction block can be put on the end of the fixing block, and then it can be fixed with the bolt.

[0015] Furthermore, a spring is sleeved on the outer surface of the guide rod, and two ends of the spring are respectively in contact with the first wedge block and the U-shaped bracket.

[0016] When the second wedge block squeezes the first wedge block, the first wedge block drives the friction block to squeeze the guide rail and compresses the spring at the same time. When the second wedge block separates from the first wedge block, the compressed spring releases the elastic force, which can push the first wedge block to move and drive the friction block to separate from the guide rail, leaving a gap between the two without contact, thereby avoiding friction.

[0017] Furthermore, two second limiting rods are connected to the upper surface of the lifting plate, and the upper ends of the second limiting rods penetrate to the upper side of the U-shaped bracket.

[0018] By providing the second limiting rod, a further limiting effect can be provided to the lifting plate, thereby improving the stability of its structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 2 This is a schematic diagram of the regional structure of the first U-shaped block in the utility model;

[0021] Figure 3 It is a schematic diagram of the regional structure of the U-shaped bracket in the utility model;

[0022] Figure 4 It is a schematic diagram of the cross-sectional structure of the friction block in the utility model;

[0023] Figure 5 It is a structural schematic diagram of the guide wheel in the utility model.

[0024] In the figure: 100, first U-shaped block; 101, moving wheel; 102, encoder; 103, U-shaped bracket; 104, guide rod; 105, first wedge block; 106, friction block; 107, electric push rod; 108, lifting plate; 109, second wedge block; 110, through groove; 111, controller; 112, first limit rod; 200, mounting block; 201, second U-shaped block; 202, guide wheel; 300, mounting seat; 301, mounting hole; 400, fixing block; 401, bolt; 500, spring; 600, second limit rod. DETAILED DESCRIPTION

[0025] The utility model is described in detail below with reference to the accompanying drawings.

[0026] like Figure 1-5As shown, a deviation correction device for a bridge crane comprises a first U-shaped block 100, wherein a moving wheel 101 is rotatably installed inside the first U-shaped block 100, an encoder 102 and a controller 111 are respectively installed on the outer surface of one side of the first U-shaped block 100, a U-shaped bracket 103 is installed on the outer surface of the first U-shaped block 100, both sides of the U-shaped bracket 103 are horizontally penetrated by a guide rod 104 and two first limit rods 112, and the two first limit rods 112 are respectively arranged on the upper and lower sides of the guide rod 104, a first wedge block 105 is installed on one end of the guide rod 104 and the two first limit rods 112, and a friction block 106 is arranged on the other end of the guide rod 104 and the two first limit rods 112. Both side walls of the U-shaped bracket 103 are provided with through grooves 110, and lifting plates 108 are slidably installed inside the two through grooves 110. An electric push rod 107 is installed on the upper surface of the U-shaped bracket 103, and the end of the telescopic end of the electric push rod 107 is connected to the lifting plate 108. Second wedge blocks 109 are installed at both ends of the lifting plate 108 in the length direction, and the second wedge block 109 is adapted to the first wedge block 105.

[0027] When the bridge crane is moving, the moving wheel 101 rotates on the guide rail, and the encoder 102 detects the rotation speed of the moving wheel 101. When it is detected that the rotation speeds on both sides are inconsistent, the controller 111 on the outside of the moving wheel 101 with a faster rotation speed controls the electric push rod 107 to start, and the telescopic end of the electric push rod 107 drives the lifting plate 108 to descend, and the second wedge blocks 109 at both ends of the lifting plate 108 descend at the same time and squeeze the first wedge block 105. The first wedge block 105 is squeezed and drives the guide rod 104 and the two first limit rods 112 to move toward the guide rail, so that the friction blocks 106 on both sides of the guide rail are squeezed on the guide rail at the same time. Through the friction force generated between the two, the speed of the moving wheel 101 can be reduced to achieve the purpose of correction. In addition, since the force is generated on both sides at the same time, the lateral displacement of the moving wheel 101 on the guide rail can be avoided, and the inner wall of the moving wheel 101 is rubbed against the guide rail, thereby reducing the service life of the moving wheel 101.

[0028] Specifically, two mounting blocks 200 are installed on the outer surface of one side of the first U-shaped block 100 away from the U-shaped bracket 103, and a second U-shaped block 201 is installed on the end of the mounting block 200. A guide wheel 202 is rotatably installed inside the second U-shaped block 201. The two guide wheels 202 are in contact with both sides of the guide rail at the same time, which can achieve the purpose of guiding the two side surfaces, avoid lateral displacement of the moving wheel 101 during the movement of the guide rail, and cause friction between the inner wall of the moving wheel 101 and the guide rail, and improve the stability and safety of the moving wheel 101 during the movement, so as to achieve a better use effect.

[0029] Specifically, a mounting seat 300 is installed on the top of the first U-shaped block 100, and mounting holes 301 are opened at the four corners of the mounting seat 300. Through the setting of the mounting seat 300 and the mounting holes 301, the device can be installed on the support leg of the bridge crane. When the device fails or is damaged, it can be dismantled and replaced.

[0030] Specifically, a fixing block 400 is installed together at the ends of the guide rod 104 and the two first limit rods 112, and the friction block 106 is installed on the outside of the fixing block 400 by means of bolts 401. By setting the fixing block 400 and the bolts 401, the friction block 106 is used as a consumable item. When it needs to be replaced, the bolts 401 can be unscrewed, and then the friction block 106 can be removed and a new friction block 106 can be put on the end of the fixing block 400, and then it can be fixed with the bolts 401.

[0031] Specifically, the outer surface of the guide rod 104 is sleeved with a spring 500, and the two ends of the spring 500 are respectively in contact with the first wedge block 105 and the U-shaped bracket 103. When the second wedge block 109 squeezes the first wedge block 105, the first wedge block 105 drives the friction block 106 to squeeze the guide rail, and also compresses the spring 500. When the second wedge block 109 is separated from the first wedge block 105, the compressed spring 500 releases its elastic force, which can push the first wedge block 105 to move and drive the friction block 106 to separate from the guide rail, leaving a gap between the two without contact, thereby avoiding friction.

[0032] Specifically, two second limiting rods 600 are connected to the upper surface of the lifting plate 108, and the upper ends of the second limiting rods 600 penetrate to the upper side of the U-shaped bracket 103. Through the setting of the second limiting rods 600, the lifting plate 108 can be further limited, thereby improving its structural stability.

[0033] The above is a detailed description of the utility model in combination with specific embodiments, and it cannot be determined that the specific implementation methods of the utility model are limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, making several equivalent substitutions or obvious modifications without departing from the concept of the utility model, and having the same performance or use, should be regarded as belonging to the patent protection scope of the utility model determined by the submitted claims.

Claims

1. A deviation-correcting device for a bridge crane, comprising a first U-shaped block (100), characterized in that: A moving wheel (101) is rotatably mounted inside the first U-shaped block (100); an encoder (102) and a controller (111) are respectively mounted on the outer surface of one side of the first U-shaped block (100); a U-shaped bracket (103) is mounted on the outer surface of the first U-shaped block (100); a guide rod (104) and two first limit rods (112) are transversely penetrated on both sides of the U-shaped bracket (103); the two first limit rods (112) are respectively arranged on the upper and lower sides of the guide rod (104); a first wedge block (105) is mounted on one end of the guide rod (104) and the two first limit rods (112); and a friction block (106) is mounted on the other end of the guide rod (104) and the two first limit rods (112); Through slots (110) are provided on both side walls of the U-shaped bracket (103), and lifting plates (108) are slidably mounted inside the two through slots (110). An electric push rod (107) is mounted on the upper surface of the U-shaped bracket (103), and the end of the telescopic end of the electric push rod (107) is connected to the lifting plate (108). Second wedge blocks (109) are mounted on both ends of the lifting plate (108) in the length direction, and the second wedge blocks (109) are adapted to the first wedge blocks (105).

2. The deviation-correcting device for a bridge crane according to claim 1, characterized in that: Two mounting blocks (200) are mounted on the outer surface of one side of the first U-shaped block (100) away from the U-shaped bracket (103), a second U-shaped block (201) is mounted on the end of the mounting block (200), and a guide wheel (202) is rotatably mounted inside the second U-shaped block (201).

3. The deviation-correcting device for a bridge crane according to claim 2, characterized in that: A mounting seat (300) is installed on the top of the first U-shaped block (100), and mounting holes (301) are provided at the four corners of the mounting seat (300).

4. The deviation-correcting device for a bridge crane according to claim 3 is characterized in that: A fixing block (400) is commonly mounted on the ends of the guide rod (104) and the two first limiting rods (112), and the friction block (106) is mounted on the outside of the fixing block (400) via bolts (401).

5. The deviation-correcting device for a bridge crane according to claim 4, characterized in that: A spring (500) is sleeved on the outer surface of the guide rod (104), and two ends of the spring (500) are respectively in contact with the first wedge block (105) and the U-shaped bracket (103).

6. The deviation-correcting device for a bridge crane according to claim 1, characterized in that: Two second limiting rods (600) are connected to the upper surface of the lifting plate (108), and the upper ends of the second limiting rods (600) penetrate to the upper side of the U-shaped bracket (103).

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