Overturn-preventing structure of crane trolley

Abstract

The utility model discloses an anti-overturning structure of a crane trolley, and relates to the related technical field of cranes. The device comprises fixing plates, connecting strips, mounting assemblies and hydraulic cylinders, side supporting plates are fixed to the edges, close to the bottoms, of the side faces, away from each other, of the two fixing plates, and the hydraulic cylinders are symmetrically fixed to the sides, away from each other, of the two fixing plates along the center line in the vertical direction; mounting assemblies are fixed to the two corners of the sides, close to each other, of the upper portions of the two fixing plates, and connecting strips are fixed to the middles of the edges of the upper portions of the sides, close to each other, of the two fixing plates between the two mounting assemblies. Through the arrangement of the fixing plate, the connecting strip, the mounting assembly and the hydraulic cylinder, the problems that the anti-overturning effect is not good enough in the operation process of the anti-overturning structure of the crane trolley, and the applicability to crane trolleys of different sizes is not good enough are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field related to cranes, and particularly relates to an anti-overturning structure of a crane trolley. Background Art

[0002] The crane trolley is mainly composed of three parts: the lifting mechanism, the trolley running mechanism and the trolley frame. The lifting mechanism includes the motor, brake, reducer, drum and pulley block. The motor drives the drum to rotate through the accelerator, so that the wire rope is wound on the drum or dropped from the drum to lift and lower heavy objects;

[0003] The trolley travel mechanism includes the motor, brake, reducer and wheel set, etc. The trolley frame is a frame that supports and installs the lifting mechanism and other components, usually a welded structure. The crane trolley runs on the crane main beam track. During the operation of the crane trolley, the wheel rim of the trolley contacts the side of the rail, causing severe wear. This phenomenon is called rail gnawing;

[0004] Minor rail gnawing is often ignored because it does not affect the use. However, serious rail gnawing will greatly increase the load of the crane, and the running resistance will be about three times greater than normal, causing the motor to burn out, the drive shaft to break, and even derailment. Derailment refers to the phenomenon that the wheels of the crane leave the rails during operation. Derailment refers to the wheels of the crane falling off the rail surface. In serious cases, the crane trolley will overturn.

[0005] In order to prevent the crane trolley from overturning, an anti-overturning structure is required to prevent overturning during the operation of the trolley, increase the side support of the trolley, and ensure the safe operation of the trolley. However, the anti-overturning structure of the crane trolley still has the following disadvantages in actual use:

[0006] During the operation of the anti-overturning structure of the crane trolley, the limiting structure is directly used to limit the rollers of the crane trolley, so that its operating range is well limited on the crane beam track. However, during the operation, the roller movement is directly restricted without supporting the trolley itself, and the anti-overturning effect is not good enough;

[0007] During the operation of the anti-overturning structure of the crane trolley, usually one model of anti-overturning mechanism can only be applied to crane trolleys of the same size. When faced with crane trolleys of various sizes, anti-overturning structures of various sizes are required to cooperate, and the applicability to crane trolleys of different sizes is not good enough during operation. Utility Model Content

[0008] The utility model aims to provide an anti-overturning structure for a crane trolley. By arranging a fixing plate, a connecting strip, a mounting assembly and a hydraulic cylinder, the utility model solves the problems that the anti-overturning effect of the anti-overturning structure of the crane trolley is not good enough during operation and the applicability to crane trolleys of different sizes is not good enough.

[0009] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0010] The utility model is an anti-overturning structure of a crane trolley, comprising a fixing plate, a connecting strip, a mounting assembly and a hydraulic cylinder, wherein a side support plate is fixed at an edge close to the bottom of a side of two fixing plates away from each other, a hydraulic cylinder is symmetrically fixed along a center line in a vertical direction at a side of two fixing plates away from each other, a mounting assembly is fixed at two corners at a side of the upper part of the two fixing plates close to each other, a connecting strip is fixed at the middle of an upper edge of a side of two fixing plates close to each other between the two mounting assemblies, when working, the connecting strip, the mounting assembly and the hydraulic cylinder are connected thereto through the fixing plate, a screw is threadedly connected therein through the connecting strip, the distance between the two fixing plates is changed by rotating the hexagonal rotating block, the fixing plate installation function is provided by the mounting assembly, and the rolling ball movement that limits the operation of the roller of the crane trolley is driven by the hydraulic cylinder.

[0011] Furthermore, a movable hole is transversely provided through the fixed plate corresponding to the position of the hydraulic cylinder, the movable holes on the two fixed plates correspond to each other, and the fixed plate is movably connected to the piston rod through the movable hole.

[0012] Furthermore, a screw is commonly threadedly connected in the two connecting strips along the central axis, a hexagonal rotating block is fixed to the middle circumference of the screw, and the connecting strip drives the screw to rotate by rotating the hexagonal rotating block, and when the screw rotates, the distance between the two connecting strips is changed.

[0013] Furthermore, the installation component includes a fixing bar, an insertion bar and a fixing frame. A fixing bar is fixed at a corner of an upper part of one of the fixing plates close to the connecting bar, and a fixing frame is fixed at a corner of an upper part of a fixing plate away from the fixing bar. An insertion bar is fixed at one end of the fixing bar close to the fixing frame. The insertion bar is movably connected in the fixing frame. The installation component is connected to the insertion bar through the fixing bar, and is movably connected to the fixing frame through the insertion bar, so as to determine the distance between the two installation components.

[0014] Furthermore, the mounting assembly also includes a movable block, a mounting bolt and a fixed block. The fixing bar and the fixing frame are both fixed with a movable block on one side close to the connecting bar. A fixed block is provided at the bottom of the movable block. A mounting bolt is vertically inserted in the movable block. The mounting bolt under the movable block is threadedly connected in the fixed block. The mounting assembly is movably connected to the mounting bolt through the movable block, and the mounting bolt is screwed into the fixed block, so that the fixed plate is installed in a suitable position.

[0015] Furthermore, each of the hydraulic cylinders is movably connected with a piston rod, which is inserted into a fixed plate, a fixed column is fixed to one end of the piston rod away from the hydraulic cylinder, and a ball is movably connected to one end of the fixed column away from the fixed plate. The hydraulic cylinder drives the piston rod to drive the fixed column and the ball on the fixed column to move to contact the roller of the crane trolley, thereby limiting the movement of the roller of the crane trolley.

[0016] The utility model has the following beneficial effects:

[0017] The utility model solves the problem that the anti-overturning effect of the anti-overturning structure of the crane trolley is not good enough during the operation of the anti-overturning structure of the crane trolley by arranging a fixing plate and a hydraulic cylinder. When working, the hydraulic cylinder is started to drive the piston rod to move, and the rolling ball on the fixed column is pushed to contact the roller of the crane trolley, so that the running stability of the roller of the crane trolley is guaranteed during work, and in the process of the trolley moving, the side support plate is used to provide side support for the crane trolley on the track, the support received by the crane trolley when it tilts, and rollover is prevented, so that the anti-overturning effect of the anti-overturning structure of the crane trolley is better during the operation.

[0018] The utility model solves the problem that the anti-overturning structure of the crane trolley is not well applicable to crane trolleys of different sizes during operation by arranging fixing plates, connecting strips and installation components. Firstly, the width of the crane trolley is determined, and the hexagonal turning block is rotated to drive the screw to rotate. When the screw rotates, the screw is threadedly connected to the connecting strip so that the distance between the two fixing plates changes. After the distance between the two fixing plates is changed, the insert strip is movably connected in the fixing frame so that the distance between the two fixing plates is kept balanced, so that the anti-overturning structure of the crane trolley is better applicable to crane trolleys of different sizes during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the assembly structure of the anti-overturning structure of a crane trolley;

[0020] Figure 2 It is a three-dimensional diagram of the fixed plate structure;

[0021] Figure 3 It is a three-dimensional diagram of the connecting strip structure;

[0022] Figure 4 A three-dimensional diagram of the installation component structure;

[0023] Figure 5 It is a three-dimensional diagram of the hydraulic cylinder structure.

[0024] Reference numerals:

[0025] 1. Fixed plate; 101. Movable hole; 102. Side support plate; 2. Connecting strip; 201. Screw; 202. Hexagonal turn block; 3. Mounting assembly; 301. Fixed strip; 302. Insert strip; 303. Fixed frame; 304. Movable block; 305. Mounting bolt; 306. Fixed block; 4. Hydraulic cylinder; 401. Piston rod; 402. Fixed column; 403. Rolling ball. DETAILED DESCRIPTION

[0026] 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 of 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. Specific embodiment 1

[0027] See also Figure 1-5 The utility model is an anti-overturning structure of a crane trolley, comprising a fixing plate 1, a connecting strip 2, a mounting assembly 3 and a hydraulic cylinder 4. A side support plate 102 is fixed to the edge of the side of the two fixing plates 1 that are away from each other and close to the bottom. The fixing plate 1 connects the connecting strip 2, the mounting assembly 3 and the hydraulic cylinder 4 thereto, and the side support is provided by the side support plate 102 to provide side support for the crane trolley on the track, thereby increasing the support received by the crane trolley when it tilts and preventing it from rolling over. A hydraulic pressure plate 102 is symmetrically fixed to the side of the two fixing plates 1 that are away from each other along the center line in the vertical direction. Cylinder 4, hydraulic cylinder 4 drives fixed column 402 to move until ball 403 contacts the wheel of crane trolley, thereby increasing the straightness of the running track of the wheel of crane trolley. Two corners of the upper part of two fixed plates 1 close to each other are fixed with mounting components 3. Fixed plates 1 are provided with mounting function on crane trolley through mounting components 3. Connecting strips 2 are fixed in the middle of the upper edge of the two fixed plates 1 close to each other between the two mounting components 3. Rotating hexagonal rotating block 202 drives the distance between connecting strips 2 to change, thereby changing the position between the two fixed plates 1.

[0028] Specifically, a movable hole 101 is transversely formed through the fixed plate 1 and correspondingly formed in the position of the hydraulic cylinder 4 . The movable holes 101 on the two fixed plates 1 correspond to each other, and the fixed plate 1 is movably connected to the piston rod 401 through the movable hole 101 .

[0029] Furthermore, the two connecting bars 2 are threadedly connected with a screw rod 201 along the central axis, and a hexagonal rotating block 202 is fixed to the middle circumference of the screw rod 201. By rotating the hexagonal rotating block 202, the screw rod 201 is driven to rotate. When the screw rod 201 rotates, the distance between the two connecting bars 2 changes.

[0030] Furthermore, the installation component 3 includes a fixing bar 301, an insertion bar 302 and a fixing frame 303. The fixing bar 301 is fixed at a corner on the upper part of a fixing plate 1 close to the connecting bar 2, and the fixing frame 303 is fixed at a corner on the upper part of a fixing plate 1 away from the fixing bar 301. The insertion bar 302 is fixed at one end of the fixing bar 301 close to the fixing frame 303, and the insertion bar 302 is movably connected in the fixing frame 303. The installation component 3 is inserted into the fixing frame 303 through the insertion bar 302 on the fixing bar 301, so that the position between the two fixing plates 1 remains balanced.

[0031] Furthermore, the mounting assembly 3 also includes a movable block 304, a mounting bolt 305 and a fixed block 306. The movable block 304 is fixed on one side of the fixed bar 301 and the fixed frame 303 close to the connecting bar 2. The fixed block 306 is arranged at the bottom of the movable block 304. The mounting bolt 305 is vertically inserted in the movable block 304. The mounting bolt 305 under the movable block 304 is threadedly connected in the fixed block 306. When the mounting assembly 3 is working, it is welded and fixed to the crane trolley by the fixed block 306, the mounting bolt 305 is inserted into the movable block 304, and then the mounting bolt 305 is inserted into the movable block 304, and then screwed into the fixed block 306 to install the fixed plate 1 on the crane trolley.

[0032] The operation process of this embodiment is as follows: when working, first determine the width of the crane trolley, rotate the hexagonal rotating block 202, and drive the screw 201 to rotate. When the screw 201 rotates, the screw 201 is threadedly connected with the connecting strip 2, so that the distance between the two fixed plates 1 changes. After the distance between the two fixed plates 1 changes, the insertion strip 302 is movably connected in the fixed frame 303, so that the distance between the two fixed plates 1 remains balanced. Specific embodiment 2

[0033] See also Figure 1 , 2 5. On the basis of the specific embodiment 1, each hydraulic cylinder 4 is movably connected with a piston rod 401, the piston rod 401 is inserted through the fixed plate 1, a fixed column 402 is fixed to the end of the piston rod 401 away from the hydraulic cylinder 4, and a ball 403 is movably connected to the end of the fixed column 402 away from the fixed plate 1. When working, the hydraulic cylinder 4 is started to drive the piston rod 401 to move, and the ball 403 on the fixed column 402 is pushed to contact the roller of the crane trolley, so that the running stability of the roller of the crane trolley is guaranteed during work.

[0034] The operation process of this embodiment is as follows: when working, the hydraulic cylinder 4 is started to drive the piston rod 401 to move, and the ball 403 on the fixed column 402 is pushed to contact the roller of the crane trolley, so that when working, the running stability of the roller of the crane trolley is guaranteed, and in the process of the trolley moving, the side support plate 102 is used to provide side support to the crane trolley on the track, thereby increasing the support received by the crane trolley when it tilts and preventing it from tipping over.

[0035] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0036] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An anti-overturning structure for a crane trolley, comprising a fixing plate (1), a connecting strip (2), a mounting assembly (3) and a hydraulic cylinder (4), characterized in that: A side support plate (102) is fixed to the edge of the side of the two fixed plates (1) that is away from each other and close to the bottom, a hydraulic cylinder (4) is symmetrically fixed to the side of the two fixed plates (1) that is away from each other along the vertical center line, a mounting assembly (3) is fixed to the two corners of the upper part of the two fixed plates (1) that is close to each other, and a connecting strip (2) is fixed to the middle of the upper edge of the two fixed plates (1) that is close to each other between the two mounting assemblies (3).

2. The anti-overturning structure of a crane trolley according to claim 1, characterized in that: The fixed plate (1) and the hydraulic cylinder (4) are provided with movable holes (101) which are transversely penetrated and corresponding to each other, and the movable holes (101) on the two fixed plates (1) correspond to each other.

3. The anti-overturning structure of a crane trolley according to claim 1, characterized in that: The two connecting strips (2) are threadedly connected together with a screw rod (201) along the central axis, and a hexagonal rotating block (202) is fixed to the middle circumference of the screw rod (201).

4. The anti-overturning structure of a crane trolley according to claim 1, characterized in that: The installation assembly (3) comprises a fixing strip (301), an inserting strip (302) and a fixing frame (303); a fixing strip (301) is fixed at a corner of an upper part of a fixing plate (1) close to a side of the connecting strip (2); a fixing frame (303) is fixed at a corner of an upper part of a fixing plate (1) away from the fixing strip (301); an inserting strip (302) is fixed at one end of the fixing strip (301) close to the fixing frame (303); and the inserting strip (302) is movably connected in the fixing frame (303).

5. The anti-overturning structure of a crane trolley according to claim 4, characterized in that: The mounting assembly (3) further comprises a movable block (304), a mounting bolt (305) and a fixed block (306); the movable block (304) is fixed to one side of the fixed bar (301) and the fixed frame (303) close to the connecting bar (2); a fixed block (306) is arranged at the bottom of the movable block (304); a mounting bolt (305) is inserted vertically through the movable block (304); and the mounting bolt (305) below the movable block (304) is threadedly connected to the fixed block (306).

6. The anti-overturning structure of a crane trolley according to claim 2, characterized in that: Each of the hydraulic cylinders (4) is movably connected to a piston rod (401), the piston rod (401) is inserted through the fixed plate (1), a fixed column (402) is fixed to one end of the piston rod (401) away from the hydraulic cylinder (4), and a rolling ball (403) is movably connected to one end of the fixed column (402) away from the fixed plate (1).

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