Telescopic guide wheel

Abstract

The utility model discloses a telescopic guide wheel which comprises a guide wheel frame body, a first rotating shaft is fixedly arranged at one end of the guide wheel frame body, and a mounting plate is fixedly arranged at the other end of the guide wheel frame body; the support assembly comprises a first support rotationally connected with the first rotating shaft and a second support rotationally connected with the elastic telescopic part; the guide wheel body is rotationally mounted below the guide wheel frame body; the elastic telescopic part comprises a disc spring shaft, the bottom end of the disc spring shaft is rotationally connected with the second support, the top end of the disc spring shaft penetrates through the mounting plate and is provided with a fastener, the disc spring shaft is sleeved with a disc spring, the top end of the disc spring abuts against the fastener, and the bottom end of the disc spring abuts against the mounting plate. When the guide wheel body moves to the uneven position of the guide face of the track beam, the guide wheel frame body rotates around the axis of the first rotating shaft, and the mounting plate enables the disc spring to stretch out and draw back in the axis direction of the disc spring shaft. Impact force borne by the guide wheel can be buffered, and the guide wheel is prevented from being damaged due to overlarge stress.

Description

TECHNICAL FIELD

[0001] The utility model relates to a crane guide wheel technical field especially relates to a telescopic guide wheel. BACKGROUND

[0002] In the crane design, many mechanisms are needed to assemble guide wheels, for example, the telescopic arm telescopic needs to set up guide wheels to guide, when the crane span is too large, needs to set up guide wheels to rectify the deviation of the crane, for the automatic hoist and operating mechanism also must set up guide wheels to guarantee the positioning accuracy.

[0003] And the force that guide wheel can bear is limited, too big stress will damage guide wheel frame, guide wheel group and other components, the existing guide wheel is fixed and pressed on the track beam through the mounting bracket, when the track beam moves, the guide wheel travels along the track beam guide surface, if the track beam guide surface appears convex and is not flat, will cause the impact to the guide wheel, the guide wheel is subjected to the action of larger impact force, thereby the force that the guide wheel receives increases, once the force that the guide wheel bears exceeds its limited value, then guide wheel frame and guide wheel group and other parts are easy to be damaged, therefore, to solve the above problems, the application provides a telescopic guide wheel. SUMMARY

[0004] In view of the above defects or deficiencies in the prior art, it is desirable to provide a telescopic guide wheel, which can buffer the impact force received by the guide wheel, better protect the guide wheel frame body and guide wheel body and other parts, and avoid damage due to excessive stress.

[0005] The utility model provides a telescopic guide wheel, which comprises:

[0006] The guide wheel frame body has a first rotating shaft fixedly arranged at one end and an installation plate fixedly arranged at the other end.

[0007] The bracket assembly comprises a first bracket and a second bracket, the first bracket is rotatably connected with the first rotating shaft, the second bracket is located below the installation plate and is rotatably connected with an elastic telescopic member installed on the installation plate, and the bracket assembly is used for fixing the guide wheel frame body.

[0008] The guide wheel body is rotatably installed below the guide wheel frame body and is used for rotating along the track beam guide surface when the track beam moves.

[0009] The elastic expansion piece comprises a disc spring shaft, the bottom end of the disc spring shaft is rotationally connected with the second support, the top end of the disc spring shaft penetrates through the mounting plate and is provided with a fastener, a disc spring is sleeved on the disc spring shaft, the top end of the disc spring abuts against the fastener, and the bottom end of the disc spring abuts against the mounting plate; when the guide wheel body moves to a position where the guide surface of the track beam is not flat, the guide wheel body rotates around the axis of the first rotating shaft, and the mounting plate makes the disc spring expand and contract along the axis direction of the disc spring shaft.

[0010] Preferably, the second support comprises a second fixed plate, symmetrically provided with supports on the second fixed plate, and the bottom end of the disc spring shaft is arranged between the supports and rotationally connected with the supports through a second rotating shaft.

[0011] Preferably, the fastener comprises a locking nut and a baffle, the locking nut is threadedly sleeved on the disc spring shaft, the baffle is sleeved on the disc spring shaft and located between the locking nut and the disc spring, and the disc spring abuts against the bottom of the baffle.

[0012] Preferably, the top end of the disc spring shaft is provided with an open pin, and the open pin abuts against the top of the locking nut.

[0013] Preferably, the first support comprises a first fixed plate, the first fixed plate is provided with a fixed seat, a rotating shaft hole is formed in the fixed seat, a lubricating bushing is fixedly sleeved in the rotating shaft hole, and the first rotating shaft penetrates through the lubricating bushing and is rotationally connected with the lubricating bushing.

[0014] Preferably, the first fixed plate and the second fixed plate are both provided with a bolt group.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The utility model discloses a guide wheel frame body, guide wheel body, first support, second support and elastic telescopic part, through first support and second support with guide wheel frame body fixed installation in installation support fixed, make guide wheel frame body keep fixed, in the process of track beam movement, guide wheel body press on track beam guide surface, when guide wheel body passes through track beam guide surface convex position, the bottom of guide wheel body is lifted, the bottom of guide wheel body is subjected to an oblique force that goes up, and guide wheel frame body rotates along the positive direction with the axis of first rotating shaft that it end part sets as the center of circle, because second support is fixed, so guide wheel frame body rotation can drive disc spring axle relative to second support along the positive direction rotation, and installation board rotates synchronously with guide wheel frame body, and the top of installation board extrudes disc spring along the axis direction of disc spring axle, and disc spring is compressed further, and stores elastic potential energy, after passing through convex position, the elastic potential energy that disc spring stores drives disc spring rebound, makes disc spring restore original pre -tension, and guide wheel frame body rotates again along the reverse direction around first rotating shaft, and restores original state, when guide wheel passes through track beam guide surface uneven stage, through the impact of compression disc spring to guide wheel body and guide wheel frame body is buffered, avoids the impact of big and makes the stress of guide wheel exceed its limit value, avoids guide wheel and is damaged because stress is too big, can good protection guide wheel frame body and guide wheel body.

[0017] It should be understood that the content described in the utility model part is not intended to limit the key or important features of the embodiments of the utility model, nor is it intended to limit the scope of the utility model. Other features of the utility model will become apparent through the following description. BRIEF DESCRIPTION OF DRAWINGS

[0018] Other features, objects and advantages of the utility model will become more apparent by reading the following detailed description of the non-limiting embodiments made with reference to the accompanying drawings:

[0019] Figure 1 It is the structural schematic diagram of the utility model;

[0020] Figure 2 It is the installation structural schematic diagram of the utility model;

[0021] Figure 3 It is Figure 2 K-K section view in the middle;

[0022] Figure 4 It is L-L section view in way 2;

[0023] Mark number in drawing: 1, guide wheel frame body;2, support assembly;3, guide wheel body;4, elastic telescopic part;5, track beam guide surface;6, installation support;7, second rotating shaft;8, bolt group;

[0024] 11, first rotating shaft;12, installation board;

[0025] 21. First support; 22. Second support;

[0026] 41. Disc spring shaft; 42. Disc spring; 43. Fastener; 44. Cotter pin;

[0027] 211. First fixing plate; 212. Fixing seat; 213. Lubrication bushing;

[0028] 221. Second fixing plate; 222. Support;

[0029] 431. Locking nut; 432. Baffle plate. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0031] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] Please refer to Figures 1-4 The present invention provides a retractable guide wheel. The guide wheel is fixedly installed on the fixing device by the mounting bracket 6. The track beam is connected to the drive device and can move. After the guide wheel is fixed, it presses on the guide surface 5 of the track beam. During the movement of the track beam, the guide wheel of the present invention rotates along the guide surface 5 of the track beam.

[0033] The retractable guide wheel of this application includes a guide wheel frame 1, a guide wheel body 3, a bracket assembly 2, and an elastic telescopic component 4. A first rotating shaft 11 is fixedly provided at one end of the guide wheel frame 1, and a mounting plate 12 is fixedly provided at the other end of the guide wheel frame 1. Specifically, the guide wheel frame 1 includes two symmetrically arranged plate-shaped frames, which are fixedly connected to each other. The first rotating shaft 11 is located between the two plate-shaped frames and is fixedly installed on the guide wheel frame 1 by bolts.

[0034] The bracket assembly 2 includes a first bracket 21 and a second bracket 22. The first bracket 21 is rotatably connected to the first rotating shaft 11, and the second bracket 22 is located below the mounting plate 12 and is rotatably connected to the elastic telescopic member 4 mounted on the mounting plate 12, for fixing the guide wheel frame 1. Specifically, the guide wheel of this application is fixedly mounted on the fixing device by the first bracket 21 and the second bracket 22, so that the guide wheel frame 1 remains fixed.

[0035] The guide wheel body 3 is rotatably installed below the guide wheel frame body 1 and is used for rotating along the track beam guide surface 5 when the track beam moves; specifically, the guide wheel body 3 is rotatably arranged between two plate-shaped frame bodies, and the bottom of the guide wheel body 3 extends to below the guide wheel frame body 1 and is pressed on the track beam guide surface 5;

[0036] The elastic telescopic member 4 comprises a disc spring shaft 41, the bottom end of the disc spring shaft 41 is rotatably connected with the second support 22, the top end of the disc spring shaft 41 penetrates the mounting plate 12 and is provided with a fastener 43, a disc spring 42 is sleeved on the disc spring shaft 41, the top end of the disc spring 42 abuts against the fastener 43, the bottom end of the disc spring 42 abuts against the mounting plate 12, when the guide wheel body 3 moves to a position where the track beam guide surface 5 is not flat, the guide wheel frame body 1 rotates around the axis of the first rotating shaft 11, and the mounting plate 12 makes the disc spring 42 stretch and contract along the axis direction of the disc spring shaft 41; specifically, a gasket is arranged between the mounting plate 12 and the second support 22, in the initial state, the bottom of the mounting plate 12 abuts against the gasket, and the top of the second support 22 abuts against the gasket, so that the fastener 43 pre-compresses the disc spring 42, and the track beam remains stable through the gasket when the track beam needs to be guided by multiple guide wheel devices.

[0037] In the embodiment, as shown in Figure 2 , the track beam moves from right to left, when the guide wheel body 3 passes through the convex position of the track beam guide surface 5, the bottom of the guide wheel body 3 receives an inclined upward force, so that the guide wheel frame body 1 rotates counterclockwise around the axis of the first rotating shaft 11 arranged at the end of the guide wheel frame body 1, since the second support 22 is fixed, the rotation of the guide wheel frame body 1 can drive the disc spring shaft 41 to rotate counterclockwise relative to the second support 22, the guide wheel frame body 1 drives the mounting plate 12 to rotate synchronously, drives the mounting plate 12 to extrude the disc spring 42 along the axis direction of the disc spring shaft, the disc spring 42 is further compressed, and stores elastic potential energy, when the guide wheel body 3 drives through the convex position, the elastic potential energy stored in the disc spring 42 drives the disc spring 42 to rebound, the guide wheel frame body 1 rotates clockwise around the axis of the first rotating shaft 11, and the guide wheel frame body 1 and the elastic telescopic member 4 return to the original state, the application buffers the impact force received by the guide wheel body 3 and the guide wheel frame body 1 by compressing the disc spring 42, avoids the impact force being too large to make the stress of the guide wheel exceed the limited value, avoids the damage of the guide wheel due to the stress exceeding the limited value, and can well protect the guide wheel frame body 1 and the guide wheel body 3.

[0038] In a preferred embodiment, as shown in Figure 1 and 4 , the second support 22 comprises a second fixed plate 221, the second fixed plate 221 is symmetrically provided with a support 222, and the bottom end of the disc spring shaft 41 is arranged between the supports 222 and is rotatably connected with the supports 222 through the second rotating shaft 7.

[0039] In the embodiment, one end of the second rotating shaft 7 penetrates the second support 22 and the disc spring shaft 41 in sequence, so that the disc spring shaft 41 can rotate around the axis of the second rotating shaft 7, and the end of the second rotating shaft is provided with an open pin to avoid the second rotating shaft 7 from slipping off.

[0040] In a preferred embodiment, as shown in Figure 1 and 4 , the fastener 43 comprises a locking nut 431 and a blocking piece 432, the locking nut 431 is threadedly sleeved with the disc spring shaft 41, the blocking piece 432 is sleeved on the disc spring shaft 432 and located between the locking nut 431 and the disc spring 42, and the disc spring 42 abuts against the bottom of the blocking piece 432.

[0041] In a preferred embodiment, as shown in Figure 1 and 4 , the top end of the disc spring shaft 41 is provided with an open pin 44, and the open pin 44 abuts against the top of the locking nut 431.

[0042] Specifically, the track beam impacts the guide wheel body 3 and the guide wheel frame body 1 during movement, the guide wheel frame body 1 is subjected to the impact force, so that the disc spring 42 is repeatedly stressed, the disc spring 42 provides an upward force to the locking nut 431 when being compressed, which is easy to cause the locking nut 431 to loosen, the locking nut 431 can be fixed by the open pin 44, so as to avoid the loosening of the locking nut 431 caused by the repeated stress of the disc spring 42, thereby avoiding the disc spring 42 from falling off.

[0043] In a preferred embodiment, as shown in Figure 1 and 3 , the first support 21 comprises a first fixed plate 211, the first fixed plate 211 is provided with a fixed seat 212, the fixed seat 212 is provided with a rotating shaft hole, a lubricating shaft sleeve 213 is fixedly sleeved in the rotating shaft hole, and the first rotating shaft 11 is sleeved in the lubricating shaft sleeve 213 and is in rotating connection with the lubricating shaft sleeve 213.

[0044] Specifically, the first rotating shaft 11 is in rotating connection with the lubricating shaft sleeve 213, and the lubricating shaft sleeve 213 can well lubricate the first rotating shaft 11, thereby avoiding abrasion caused by frequent rotation of the guide wheel frame body 1.

[0045] In a preferred embodiment, as shown in Figure 1 and 3 , the first fixed plate 211 and the second fixed plate 221 are provided with a bolt set 8.

[0046] Specifically, the first fixed plate 211 and the second fixed plate 221 are installed on the mounting support 6 through the bolt set 8, so as to realize installation of the guide wheel.

[0047] In the description of the present specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense, for example, "connection" can be fixed connection, or detachable connection, or integrally connected; can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0048] In the description of the present specification, the description of the terms "one embodiment", "some embodiments" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description 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.

[0049] The above is only the preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A retractable guide wheel, characterized in that, include: The guide wheel frame (1) has a first rotating shaft (11) fixedly installed at one end and a mounting plate (12) fixedly installed at the other end. The bracket assembly (2) includes a first bracket (21) and a second bracket (22). The first bracket (21) is rotatably connected to the first rotating shaft (11). The second bracket (22) is located below the mounting plate (12) and is rotatably connected to the elastic telescopic member (4) mounted on the mounting plate (12). The bracket assembly (2) is used to fix the guide wheel frame (1). The guide wheel body (3) is rotatably mounted below the guide wheel frame (1) and is used to rotate along the guide surface (5) of the track beam when the track beam moves; wherein, The elastic telescopic component (4) includes a disc spring shaft (41), the bottom end of which is rotatably connected to the second bracket (22), the top end of which passes through the mounting plate (12) and is provided with a fastener (43), a disc spring (42) is sleeved on the disc spring shaft (41), the top end of which abuts against the fastener (43), and the bottom end of which abuts against the mounting plate (12); when the guide wheel body (3) moves to an uneven position on the guide surface (5) of the track beam, the guide wheel frame (1) rotates around the axis of the first rotating shaft (11), and the mounting plate (12) causes the disc spring (42) to extend and retract along the axial direction of the disc spring shaft (41).

2. The retractable guide wheel according to claim 1, characterized in that, The second bracket (22) includes a second fixing plate (221), on which supports (222) are symmetrically arranged. The bottom end of the disc spring shaft (41) is located between the supports (222) and is rotatably connected to the supports (222) through a second rotating shaft (7).

3. A retractable guide wheel according to claim 2, characterized in that, The fastener (43) includes a locking nut (431) and a baffle (432). The locking nut (431) is threaded onto the disc spring shaft (41). The baffle (432) is sleeved on the disc spring shaft (41) and located between the locking nut (431) and the disc spring (42). The disc spring (42) abuts against the bottom of the baffle (432).

4. A retractable guide wheel according to claim 3, characterized in that, The top end of the disc spring shaft (41) is provided with a cotter pin (44), which abuts against the top of the locking nut (431).

5. A retractable guide wheel according to claim 2, characterized in that, The first bracket (21) includes a first fixing plate (211), a fixing seat (212) is provided on the first fixing plate (211), a rotating shaft hole is provided on the fixing seat (212), a lubrication bushing (213) is fixedly sleeved in the rotating shaft hole, and the first rotating shaft (11) passes through the lubrication bushing (213) and is rotatably connected to the lubrication bushing (213).

6. A retractable guide wheel according to claim 5, characterized in that, Both the first fixing plate (211) and the second fixing plate (221) are provided with bolt groups (8).

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