Guiding and balancing device of crane traveling mechanism

Abstract

The utility model discloses a crane travelling mechanism guiding and balancing device which comprises a guide rail, a driving unit and a balancing unit, the upper surface of the guide rail is a travelling contact surface of a travelling crane, and the driving unit is arranged on the outer side surface of the guide rail; the balance unit is detachably installed on the walking type crane and connected with the driving unit, and the driving unit drives the walking type crane and the balance mechanism to walk on the guide rail synchronously; the balance unit comprises a connecting baffle and a stud, a clamping groove is formed in the connecting baffle, the stud is detachably installed on the walking type crane, the stud is connected with the clamping groove in a clamped mode through a gasket, and the stud is sleeved with a spring. According to the guide balancing device, the driving units and the balancing units which are symmetrically arranged on the two sides work cooperatively, so that the problems of walking deflection, abnormal gear meshing, clamping stagnation and the like of the crane are effectively solved, and the walking synchronization precision and the operation safety are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of crane walking mechanism, in particular to a guide balance device of crane walking mechanism. BACKGROUND

[0002] In the scenes of industrial production, port loading and unloading, construction, etc., as the core hoisting equipment, the walking crane needs to move along the guide rail in the horizontal direction through the walking mechanism, and the walking stability of the walking mechanism directly affects the precision, efficiency and safety of the hoisting operation. The driving and guiding balance of the walking mechanism is the key to ensure the stable operation of the crane, especially in the scenes of large span, heavy load or high frequency operation, which puts high requirements on the synchronism and anti-deflection ability of the walking mechanism.

[0003] Currently, the crane walking mechanism mostly adopts a double-sided motor driving transmission mode, and the crane is driven to walk along the guide rail through the synchronous operation of the two-sided motors. However, in actual application, the two-sided motors are prone to out-of-sync driving speed due to factors such as power supply voltage fluctuation, motor performance difference (such as speed deviation and inconsistent torque), etc. When the speed of one motor is too fast, the crane is prone to deflection along the guide rail, and in severe cases, it may even cause gear breakage, affecting the service life of the equipment. In addition, the existing walking mechanism lacks effective adaptive balance and guiding correction mechanism, and the traditional guiding structure is mostly rigidly connected, which can only play a role in basic limiting and cannot buffer the lateral force generated by deflection. The unilateral stress concentration caused by deflection will further aggravate the wear of the guide rail and the walking wheels of the crane, and at the same time, it will affect the horizontal movement precision of the hoisted object and increase the operation risk. CONTENT OF THE UTILITY MODEL

[0004] In view of the above-mentioned shortcomings and deficiencies, the utility model provides a guide balance device of crane walking mechanism, which cooperates with the driving unit and the balance unit arranged symmetrically on both sides to effectively avoid the problems of crane walking deflection, abnormal meshing and jamming of gears, and improve the walking synchronization precision and operation safety.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the main technical scheme:

[0006] A guide balance device of crane walking mechanism, comprising a guide rail, a driving unit and a balance unit, the upper surface of the guide rail is the walking contact surface of the walking crane, and the driving unit is arranged on the outer side of the guide rail; the balance unit is detachably installed on the walking crane, and the balance unit is connected with the driving unit; the driving unit drives the walking crane and the balance mechanism to walk on the guide rail synchronously; the balance unit comprises a connecting baffle and a stud, the connecting baffle is provided with a clamping groove, the stud is detachably installed on the walking crane, the stud is clamped with the clamping groove through a gasket, and the stud is provided with a spring.

[0007] The stud is in sliding connection with the clamping groove, and a gasket and a spring are respectively sleeved on the stud, and the position is fixed by a nut.

[0008] The balance unit further comprises a support side plate, the support side plate is perpendicular to the side of the walking crane, the connecting baffle is L-shaped and integrally formed with the support side plate, one side of the connecting baffle provided with the clamping groove is in contact with the walking crane, and the other side of the connecting baffle is arranged in the same direction as the stud.

[0009] One side of the support side plate is a U-shaped plate, and the U-shaped plate is connected with the walking crane through a pin shaft.

[0010] The driving unit comprises a motor and a rack, and the rack is arranged on the outer side of the guide rail; the motor is fixedly arranged on the support side plate of the balance unit, a gear is connected with the output shaft of the motor and protrudes from the support side plate, and the gear is in meshing connection with the rack.

[0011] The driving unit and the balance unit are two sets and are arranged on two guide rails respectively, and are suitable for walking of the walking crane.

[0012] The utility model has the following beneficial effects and advantages:

[0013] The utility model discloses a guide balance device, which is characterized by the following: the driving unit and the balance unit are arranged on the two sides of the guide rail symmetrically and work cooperatively.

[0014] The support side plate of the driving unit is connected with the crane pin shaft through a U-shaped structure, the connecting baffle of the balance unit is L-shaped and integrally formed with the support side plate, and the double-stable structure guarantees the installation stability of the driving motor and improves the impact resistance of the whole device. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the crane walking mechanism guide balance device of the utility model.

[0016] Figure 2 It is a structural schematic view of the driving unit and the balance unit of the utility model.

[0017] Figure 3 This is a schematic diagram of the connection structure between the connecting side plate of this utility model and the traveling crane.

[0018] Among them, 101 is a traveling crane, 102 is a guide rail, 103 is a rack, 104 is a gear, 105 is a support side plate, 106 is a pin, 107 is a hinge hole, 108 is a connecting baffle, 109 is a spring, 110 is a washer, 111 is a stud, 112 is a nut, and 113 is a motor. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings. Figures 1-2 As shown, this utility model is a guiding and balancing device for a crane traveling mechanism, adapted to the double-side guide rail traveling scenario of a traveling crane 101. It includes guide rails 102, two symmetrically arranged drive units, and two corresponding matching balancing units. The two drive units and balancing units are respectively mounted on two parallel guide rails 102, achieving guidance and balance correction of the crane's travel through mechanical cooperation. The upper surface of the guide rail 102 is the contact support surface for the traveling wheels of the traveling crane 101, ensuring the crane's load-bearing stability. The outer side of the guide rail 102 (the side away from the other guide rail) is the assembly reference surface for the drive unit, used to fix the rack 103. The two sides of the traveling crane 101, corresponding to the guide rail positions, are detachably connected to the balancing unit and drive unit respectively through pins 106, so that the power output of the drive unit and the guiding correction of the balancing unit are linked, ensuring that the crane travels in a straight line along the guide rail 102.

[0020] The drive unit is a gear-rack meshing transmission structure, including a motor 113, a gear 104 and a rack 103. All components are made of high-strength metal materials to ensure heavy-duty transmission requirements.

[0021] The rack 103 is fixed to the outer side of the guide rail 102 by countersunk bolts. The length of the rack 103 is the same as the length of the guide rail 102. Its tooth surface faces the crane side. The motor 113 is fixed on the support side plate 105. The output shaft of the motor 113 passes through the support side plate 105 and is connected to the gear 104. The gear 104 meshes with the rack 103.

[0022] The balance unit and the drive unit are integrated into an assembly via the support side plate 105. The support side plate 105 is made of steel plate by cutting and bending, and is divided into a U-shaped connecting section and an L-shaped baffle section. The two are integrally formed to ensure structural rigidity.

[0023] The U-shaped connecting section of the support side plate 105 is open towards the walking crane 101, coaxial hinge holes 107 are formed on the two parallel plates of the U-shaped plate, the hinge holes 107 are hinged with the ear plates on the side of the crane body through a pin shaft 106, the pin shaft 106 is locked at both ends by a split pin, which realizes detachable connection while preventing falling off. The L-shaped baffle section is a connecting baffle 108, which is connected perpendicularly with the U-shaped section of the support side plate 105, a long slot is formed on the side of the connecting baffle 108 towards the crane, which is used to cooperate with the stud 111 to realize sliding guidance.

[0024] The balancing unit includes a stud 111, a gasket 110, a spring 109 and a nut 112, the stud 111 is an M20 high-strength bolt, one end of which is screwed into a pre-set threaded hole on the side of the walking crane 101; the other end of the stud 111 is sequentially sleeved with the gasket 110 and the spring 109, then passes through the slot of the connecting baffle 108, and is locked in position by the nut 112. The gasket 110 is a circular steel plate, which is larger in diameter than the slot width to form axial limiting to avoid the balancing unit from being separated from the crane; the spring 109 is a cylindrical helical compression spring, which is pre-compressed during initial assembly to ensure sufficient elastic correction force.

[0025] The U-shaped section of the support side plate 105 and the L-shaped connecting baffle 108 form a motor containing space, the base part of the motor 113 is embedded in the space, which is auxiliary fixed by the structure limiting of the support side plate 105 to reduce the vibration of the motor 113 during operation and improve the transmission stability.

[0026] In use, the walking crane 101 is placed on the guide rail 102, the support side plate 105 is connected with the walking crane 101 through the pin shaft 106, the position of the slot is confirmed, the stud 111 is installed on the walking crane 101, the stud 111 is positioned corresponding to the slot, the gasket 110 and the spring 109 are sequentially sleeved on the stud 111, and then the spring position is fixed by the nut 112.

[0027] When the walking crane 101 is working, the two motors 113 on the guide rails 102 are started synchronously, the motor 113 drives the gear 104 to rotate, and through the meshing transmission of the gear 104 and the rack 103, the crane is driven to move forward or backward along the guide rail 102.

[0028] In the starting process or the running process, when the two side motors 113 are out of synchronization due to power supply fluctuations, load differences, etc., such as the left side motor rotating faster than the right side, the crane body will slightly deviate to the right side. At this time, the stud 111 of the left side balance unit will slide to one side relative to the clamping groove of the connecting baffle 108, compressing the left side spring 109 to an over-compressed state. The reverse elastic force generated by the spring 109 will hinder the movement of the left side support side plate 105, thereby slowing down the meshing speed of the left side gear 104 and the rack 103; at the same time, the compression amount of the right side spring 109 is reduced, and the dynamic balance of the driving force of the two sides is achieved through the difference in elastic force. When the rotating speeds of the two side motors return to consistency, the crane deviation is corrected, and both sides of the spring 109 return to the initial pre-compressed state, ensuring the straight-line stable operation of the crane along the guide rail.

[0029] The present embodiment realizes walking synchronization correction without complex electrical control through the flexible balance design of the mechanical structure, has simple structure and convenient maintenance, and is suitable for walking guide scenes of various large-span and heavy-load walking cranes.

Claims

1. A guiding and balancing device for a crane traveling mechanism, characterized in that: The system includes a guide rail, a drive unit, and a balancing unit. The upper surface of the guide rail serves as the travel contact surface for the mobile crane, and the drive unit is located on the outer side of the guide rail. The balancing unit is detachably mounted on the mobile crane and is connected to the drive unit. The drive unit drives the mobile crane and the balancing mechanism to travel synchronously on the guide rail. The balancing unit includes a connecting baffle and a stud. The connecting baffle has a slot, and the stud is detachably mounted on the mobile crane. The stud engages with the slot through a washer, and a spring is fitted around the stud.

2. The crane traveling mechanism guide and balance device according to claim 1, characterized in that: The stud is slidably connected to the slot, and a washer and a spring are respectively fitted on the stud, which is fixed in position by a nut.

3. The crane traveling mechanism guide and balance device according to claim 1, characterized in that: The balancing unit also includes a support side plate, which is perpendicular to the side of the traveling crane. The connecting baffle is L-shaped and integrally formed with the support side plate. One side of the connecting baffle with a slot is in close contact with the traveling crane, and the other side of the connecting baffle is set in the same direction as the stud.

4. A crane traveling mechanism guide and balancing device according to claim 3, characterized in that: One side of the support plate is a U-shaped plate, which is connected to the traveling crane by a pin.

5. A crane traveling mechanism guide and balance device according to claim 3, characterized in that: The drive unit includes a motor and a rack, with the rack disposed on the outer side of the guide rail; the motor is fixedly mounted on the support side plate of the balance unit, and the motor output shaft extends out of the support side plate and is connected to a gear, which meshes with the rack.

6. A crane traveling mechanism guide and balance device according to claim 1, characterized in that: The drive unit and the balance unit are two sets, respectively installed on two guide rails, adapted to the movement of the mobile crane.

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