Brake trolley

Abstract

The utility model provides a braking trolley, which belongs to the technical field of monorail crane braking devices and comprises a first braking unit and a second braking unit, the first braking unit comprises a first frame body, a first braking device, a first walking wheel, a centrifugal speed limiting device and a control valve, and the first braking device, the first walking wheel, the centrifugal speed limiting device and the control valve are arranged on the first frame body. The centrifugal speed limiting device is used for triggering the control valve to act; the control valve is used for controlling each brake device to brake; the second braking unit comprises a second frame body, and a second braking device and two walking wheels which are arranged on the second frame body; the first braking unit and the second braking unit are connected with each other through a connecting device, and the connecting device is used for enabling the braking trolley to run smoothly on the track. The braking trolley formed by combining the multiple braking units can provide large braking force. Different brake units are connected in a universal hinged mode, so that the brake trolley can adapt to the complex working conditions of slope changing and turning of the track.

Description

Technical Field

[0001] The utility model belongs to the technical field of braking devices, in particular to a braking trolley used for emergency braking of a monorail crane. Background Art

[0002] Coal mine monorail crane is a mine auxiliary transportation equipment running on a single I-rail. It is now widely used underground in coal mines because it can realize direct transportation from the wellhead to the working face without relocation.

[0003] At present, the main safety problem when using monorail cranes in coal mines is the problem of runaway when the monorail cranes are running on inclined tracks. When runaway occurs, due to the long length and heavy weight of the locomotive itself, the descending speed is fast and difficult to stop. Once runaway occurs, it will cause great losses to the coal mining enterprises.

[0004] In order to effectively control the occurrence of such accidents and reduce the losses of the enterprise, it is necessary to design a special braking trolley device to meet the large braking force requirements of the monorail flying car. Utility Model Content

[0005] The utility model aims to solve the above problems and provides a braking trolley for a monorail crane to realize forced braking when the monorail crane is flying.

[0006] The technical solution of the utility model is to provide a braking trolley for braking a monorail crane, comprising a first braking unit and a second braking unit.

[0007] The first brake unit includes a first frame, a first brake device, a first travel wheel, a centrifugal speed limiting device and a control valve arranged on the first frame, the centrifugal speed limiting device is used to trigger the control valve to operate, and the control valve is used to control each brake device to brake;

[0008] The second brake unit includes a second frame, a second brake device and a second travel wheel arranged on the second frame;

[0009] The first brake unit and the second brake unit are connected to each other via a connecting device, and the connecting device is used to enable the brake trolley to run smoothly on the track.

[0010] In a possible embodiment, at least one third brake unit is connected between the first brake unit and the second brake unit, the third brake unit includes a third brake device and a third travel wheel, and two adjacent brake units are connected to each other via a connecting device.

[0011] In a possible embodiment, the connecting device is configured as a ball joint.

[0012] In a possible embodiment, the connection device is configured as a universal joint.

[0013] In a possible embodiment, the connecting device is configured as a connecting rod device, which includes a connecting rod and connecting seats hinged at two ends of the connecting rod, and the connecting seats are fixed on the corresponding brake unit.

[0014] In a possible embodiment, the upper parts of adjacent frames are connected to each other via a limiting ring, and waist-shaped holes for connecting the limiting ring are provided on the corresponding frames.

[0015] In a possible embodiment, connecting plates are fixedly provided at both ends of the brake trolley, and the connecting plates are used to be connected to external equipment through a connecting rod device.

[0016] In a possible embodiment, each braking device includes a brake cylinder with a spring, a brake arm, a brake rod and a brake block, the two ends of the brake cylinder are respectively connected to the first ends of the two brake arms, the second ends of the two brake arms are respectively connected to the first ends of the two brake rods, and the second ends of the two brake rods are respectively connected to the two brake blocks.

[0017] The brake trolley provided by the utility model has the following beneficial effects: the brake trolley comprises a plurality of separate brake units, each of which is provided with a brake device, and the different brake units are connected by a connecting device. The brake trolley formed by combining a plurality of brake units can provide a larger braking force. The universal hinged connection is adopted between the different brake units, so that the brake trolley can adapt to complex working conditions such as track slope changes and turns. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the front structural view of a brake trolley provided in one embodiment of the utility model.

[0019] Figure 2 A schematic diagram of the three-dimensional structure of a brake trolley provided in one embodiment of the utility model.

[0020] Figure 3 A front view of a brake trolley provided in another embodiment of the utility model.

[0021] Figure 4 A front view of a brake trolley provided in yet another embodiment of the utility model.

[0022] Figure 5 A schematic diagram of a brake trolley provided in one embodiment of the utility model running on a track.

[0023] In the figure: 1. first brake unit; 11. first running wheel; 12. first guide wheel; 13. centrifugal speed limiting device; 14. first frame; 141. first waist hole; 211. second waist hole; 15. control valve; 16. first connecting plate; 17. first brake device; 2. second brake unit; 21. second frame; 22. second running wheel; 23. second guide wheel; 24. second brake device; 241. brake block; 242. brake arm; 243. brake cylinder; 25. second connecting plate; 3. limit ring; 4. ball joint; 5. third brake unit; 51. third brake device; 52. third running wheel; 53. third guide wheel; 54. third frame; 541. third waist hole; 6. universal joint; 7. track. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the utility model.

[0025] like Figure 1 As shown, this embodiment provides a monorail crane brake trolley, including a first brake unit 1 and a second brake unit 2. The first brake unit 1 includes a first frame 14, a centrifugal speed limiting device 13 arranged on the first frame 14, a control valve 15, a first brake device 17, a pair of first running wheels 11 and a pair of first guide wheels 12. The second brake unit 2 includes a second frame 21, on which a second brake device 24, a pair of second running wheels 22 and a pair of second guide wheels 23 are arranged.

[0026] The first brake unit 1 and the second brake unit 2 are connected by a connecting device, and the multiple brake units are connected to each other to achieve the superposition of braking force. In specific use, the brake trolley is usually connected to the front end of the monorail crane in the running direction through a connecting rod device. When the monorail crane runs away, the brake devices of the brake trolley are controlled to perform emergency braking.

[0027] like Figure 2 and Figure 3 As shown, at least one third brake unit 5 is provided between the first brake unit 1 and the second brake unit 2. In this embodiment, one third brake unit 5 is provided as an example, and both ends of the third brake unit 5 are respectively connected to the adjacent first brake unit 1 and the second brake unit 2 through connecting devices. A third running wheel 52, a third guide wheel 53 and a third brake device 51 are installed on the third frame 54 of the third brake unit 5.

[0028] For further reference, Figure 1 and Figure 3In order to make the brake trolley adapt to the turning and slope change of the track, the connection device between the first brake unit 1, the third brake unit 5 and the second brake unit 2 adopts a ball joint 4. Correspondingly, the connection seat of the ball joint 4 is correspondingly set at the connection position of the first brake unit 1, the third brake unit 5 and the second brake unit 2.

[0029] For further reference, Figure 4 In order to make the brake trolley adapt to the turning and slope change of the track, the connection device between the first brake unit 1, the third brake unit 5 and the second brake unit 2 adopts a universal joint 6. The connection position of the first brake unit 1, the third brake unit 5 and the second brake unit 2 is correspondingly provided with a connection seat of the universal joint 6.

[0030] By adopting a universal connection structure such as a ball joint 4 or a universal joint 6, it is possible to realize that when a plurality of brake units are connected to each other, they can run on the track to adapt to the slope change or turn of the track.

[0031] In some possible embodiments, the connecting device may also be a connecting rod device, which includes a connecting rod and a connecting seat hinged at both ends of the connecting rod, and the connecting seat is connected to the corresponding brake unit. Since the connecting rod device is a conventional structure of a monorail crane connection, it is not specifically introduced in this embodiment.

[0032] In a possible embodiment, connecting plates are provided at both ends of the brake trolley, and the connecting plates are used to connect with the monorail crane through a connecting device. In this embodiment, a first connecting plate 16 is provided on the first brake unit 1, and a second connecting plate 25 is provided on the second brake unit 2.

[0033] In a possible implementation, a first waist hole 141 is provided on the top of the first frame 14, a second waist hole 211 is provided on the upper part of the second frame 21, and two third waist holes 541 are provided at both ends of the top of the third frame 54. Two adjacent waist holes are connected by a limit ring 3. The limit ring 3 is used to connect adjacent brake units to prevent the brake trolley from swinging too much and interfering with the track.

[0034] In some possible implementations, taking the second braking device 24 as an example, the remaining braking devices include a brake cylinder 243 with a spring, a brake arm 242, a brake rod and a brake block 241, the two ends of the brake cylinder 243 are respectively connected to the first ends of the two brake arms 242, the second ends of the two brake arms 242 are respectively connected to the first ends of the two brake rods, and the second ends of the two brake rods are respectively connected to the two brake blocks 241.

[0035] refer to Figure 1When this embodiment is used, the trigger speed of the centrifugal speed limiting device 13 is first set. In this embodiment, the brake trolley brakes only when it is determined that the monorail crane is running away. The set limit speed is 2.5m / s-3.5m / s. When the speed of the centrifugal speed limiting device 13 reaches or exceeds the limit speed, the control valve 15 is triggered to act. After the control valve 15 acts, the brake cylinder 243 on each brake unit releases pressure to drain the hydraulic oil back to the oil tank, thereby achieving braking. The pressure relief brake originally belongs to the prior art and will not be repeated here.

[0036] refer to Figure 5 When the brake trolley runs on the I-shaped track 7, the adjacent brake units can swing horizontally or vertically through the action of the connecting device to adapt to the turning and changing slope of the track. The corresponding running wheels run on the track 7, and the corresponding guide wheels guide on both sides of the track 7.

[0037] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0038] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. The above is only a preferred implementation method of the utility model. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the utility model, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the protection scope of the utility model.

Claims

1. A brake trolley for braking a monorail crane, comprising a first brake unit and a second brake unit, characterized in that: The first brake unit includes a first frame, a first brake device, a first travel wheel, a centrifugal speed limiting device and a control valve arranged on the first frame, the centrifugal speed limiting device is used to trigger the control valve to operate, and the control valve is used to control each brake device to brake; The second brake unit includes a second frame, a second brake device and two running wheels arranged on the second frame; The first brake unit and the second brake unit are connected to each other via a connecting device, and the connecting device is used to enable the brake trolley to run smoothly on the track.

2. The brake trolley according to claim 1, characterized in that: At least one third brake unit is connected between the first brake unit and the second brake unit. The third brake unit includes a third brake device and a third running wheel. Two adjacent brake units are connected to each other via a connecting device.

3. The brake trolley according to claim 1 or 2, characterized in that: The connecting device is configured as a ball joint.

4. The brake trolley according to claim 1 or 2, characterized in that: The connecting device is configured as a universal joint.

5. The brake trolley according to claim 1 or 2, characterized in that: The connecting device is configured as a connecting rod device, which includes a connecting rod and a connecting seat hinged at both ends of the connecting rod, and the connecting seat is fixed on the corresponding brake unit.

6. The brake trolley according to claim 5, characterized in that: Connecting plates are fixedly provided at both ends of the brake trolley, and the connecting plates are used to be connected with external equipment through a connecting rod device.

7. The brake trolley according to any one of claims 1 or 2, characterized in that: Each braking device includes a brake cylinder with a spring, a brake arm, a brake rod and a brake block. The two ends of the brake cylinder are respectively connected to the first ends of the two brake arms, the second ends of the two brake arms are respectively connected to the first ends of the two brake rods, and the second ends of the two brake rods are respectively connected to the two brake blocks.

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