Hydraulic double-speed detection device

Abstract

A hydraulic double-speed detection device is installed on a monorail crane rail, the monorail crane rail is matched with a movable monorail crane, namely, the monorail crane comprises a supporting trolley, and a hydraulic pump providing moving power for the supporting trolley is installed on the monorail crane rail. The supporting trolley is provided with moving wheels arranged on a track of the monorail crane and comprises a speed taking device and a hydraulic double-speed detection device. The speed taking device is composed of a rack, a speed taking wheel and a speed taking pump, the rack is located on the supporting trolley, one end of the rack is connected with the speed taking wheel, the other end of the rack is connected with the speed taking pump, the speed taking wheel is close to the moving wheel, and the hydraulic double-speed detection device is installed on the monorail crane and operates on a monorail crane rail at the same speed along with the monorail crane. And the real-time running speed of the monorail crane is obtained through rotation of the speed taking wheel. The device is used for ensuring that the locomotive can run at a limited speed in different working states of no-load and heavy load, so that the locomotive can run quickly without exceeding the limited speed, and the locomotive can work safely and efficiently.

Description

Technical Field

[0001] The utility model relates to the field of equipment for online real-time detection of the running speed of a monorail crane locomotive, in particular to a hydraulic dual-speed detection device. Background Art

[0002] With the advancement of mining technology, the application of monorail cranes as auxiliary transportation equipment in mines is increasing, but there are also cases of accidents caused by overspeeding of monorail cranes. The existing monorail crane locomotive overspeed protection device can only calibrate one speed value, which can only be calibrated according to the maximum speed (no load). Due to the different characteristics of no-load and heavy-load when the locomotive is running, the maximum speed calibration (no-load) value cannot meet the speed protection requirements of the locomotive when it is running with heavy load. There is an urgent need for a speed detection device that can provide different speed calibration values ​​according to the different working states of no-load and heavy-load when the locomotive is running, that is, a dual-speed detection device, which is used to ensure that the locomotive can run at a limited speed in different working states of no-load and heavy-load, so that the locomotive can run fast and not exceed the speed limit, so that the locomotive can work safely and efficiently. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the utility model provides a speed detection device, namely a dual-speed detection device, which can provide different speed calibration values ​​according to the different working states of the locomotive when it is unloaded or loaded, and is used to ensure that the locomotive can run at a limited speed in different working states such as unloaded and loaded, so that the locomotive can run fast without exceeding the speed limit, so that the locomotive can work safely and efficiently.

[0004] In order to achieve the above utility model purpose, the technical solution adopted by the utility model is:

[0005] A hydraulic dual-speed detection device is installed on a monorail locomotive track, the monorail locomotive track is adapted to a movable monorail locomotive, that is, the monorail locomotive includes a supporting trolley, the monorail locomotive track is installed with a hydraulic pump providing a moving power for the supporting trolley, the supporting trolley is provided with a moving wheel placed on the monorail locomotive track, and includes: a speed taking device, a hydraulic dual-speed detection device;

[0006] The speed-taking device is composed of a frame, a speed-taking wheel, and a speed-taking pump. The frame is located on a supporting trolley, and one end is connected to the speed-taking wheel, and the other end is connected to the speed-taking pump. The speed-taking wheel is close to the moving wheel. The hydraulic dual-speed detection device is installed on the monorail crane. As the monorail crane runs at the same speed on the monorail crane track, the real-time running speed of the monorail crane is obtained by rotating the speed-taking wheel.

[0007] The hydraulic dual-speed detection device comprises: a valve body, one side of the upper surface of the valve body is connected to a cover plate by bolts, which is used to install an oil return sequence valve group, a low-speed speed regulating valve and a high-speed speed regulating valve are respectively installed on the other side of the upper surface of the valve body, an overflow valve and an oil return sequence valve are installed on one side of the valve body, the overflow valve cooperates with the low-speed speed regulating valve and the high-speed speed regulating valve to set a specific speed limit value, a hydraulically controlled one-way valve is installed on the other side of the valve body, a plurality of one-way valves are installed on the side of the valve body, and a low-speed ball valve and a high-speed ball valve for controlling low speed and high speed are respectively installed on adjacent surfaces of the side of the valve body, a two-way plug-in is installed on the inner side of the valve body, the two-way plug-in is used in conjunction with the hydraulically controlled one-way valve to control the opening of the oil return sequence valve group, and the side of the valve body is provided with oil inlet and outlet ports P1, P3 connected to the speed pump, an oil supply port P2, and oil return ports T1, T2, wherein T1 and T2 can be directly returned to the oil tank or returned to the oil tank through an oil return pipe.

[0008] Preferably, there are four one-way valves to form a bidirectional oil suction circuit, that is, the hydraulic pump of the monorail crane can achieve normal oil suction and oil discharge in both forward and reverse rotations.

[0009] Preferably, a plurality of plugs are provided on the side of the valve body, i.e., plugging the process holes in the valve body processing process, and they are plug one and plug two.

[0010] Preferably, the number of the cover plates is 2, the number of the oil return sequence valves is 2, forming an oil return sequence valve group, and the number of the two-way plug-ins is 2.

[0011] The beneficial effects of the utility model are:

[0012] The hydraulic dual-speed detection device can calibrate two speed values ​​- high speed value and low speed value, which can meet the speed limit requirements of the monorail crane in different working states; the hydraulic dual-speed detection device can limit the low speed by opening the low-speed ball valve handle, and can limit the high speed by opening the height ball valve handle. The selection and switching of high and low speeds are simple; the power of the hydraulic dual-speed detection device comes directly from the detected equipment, and the entire device does not have any electrical components. It is a non-electric working device with a wide range of applications. It is convenient to switch between high and low speeds on site, and the speed reaches the set value. The instantaneous feedback signal has a short response time and strong practicality. In addition, the power of the hydraulic dual-speed detection device comes directly from the detected equipment. The entire device does not have any electrical components. It is a non-electric working device, which can meet the needs of any different working environment in the mine and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a side structural schematic diagram of the utility model;

[0015] Figure 3This is a schematic diagram of the main structure of the utility model;

[0016] Figure 4 It is a side structural schematic diagram of the utility model;

[0017] Figure 5 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 6 It is a structural schematic diagram of the speed taking device of the utility model;

[0019] Figure 7 This is a schematic diagram of the structure of the support trolley of the utility model located on the track of a monorail crane locomotive;

[0020] Reference table of reference numerals:

[0021] 1-valve body, 2-check valve, 3-low-speed ball valve, 4-low-speed speed regulating valve, 5-plug one, 6-plug two, 7-cover plate, 8-hydraulic control check valve, 9-overflow valve, 10-return oil sequence valve, 13-high-speed speed regulating valve, 14-high-speed ball valve, 15-speed wheel, 16-frame, 17-speed pump, 18-monorail crane locomotive track, 19-support trolley, 20-moving wheel. DETAILED DESCRIPTION

[0022] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings. The same parts are represented by the same figure numbers. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0023] In order to make the contents of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0024] like Figure 6 , 7As shown: the speed-taking device is composed of a frame 16, a speed-taking wheel 15, and a speed-taking pump 17. The frame 16 is located on a supporting trolley 19, and one end is connected to the speed-taking wheel 15, and the other end is connected to the speed-taking pump 17. The speed-taking wheel 15 is close to the moving wheel 20. The hydraulic dual-speed detection device is installed on the monorail locomotive. As the monorail locomotive runs at the same speed on the monorail locomotive track 18, the real-time running speed of the monorail locomotive is obtained by rotating the speed-taking wheel 15; it is installed on the monorail locomotive track 18, and the monorail locomotive track 18 is adapted to a movable monorail locomotive, that is, the monorail locomotive includes a supporting trolley 19, and the monorail locomotive track 18 is installed with a hydraulic pump that provides moving power for the supporting trolley 19, and the supporting trolley 19 is provided with a moving wheel 20 placed on the monorail locomotive track 18.

[0025] That is, the monorail crane (supporting trolley 19) is used as the detected equipment. When the diameter of the speed wheel is determined, the linear running speed or rotational speed of the detected equipment can be obtained through the rotation speed of the speed wheel. The hydraulic dual-speed detection device runs in a straight line at the same speed as the monorail crane, and the real-time running speed of the monorail crane is obtained through the rotation of the speed wheel.

[0026] like Figure 1-Figure 5 The hydraulic dual-speed detection device comprises: a valve body 1, one side of the upper surface of the valve body 1 is connected to a cover plate 7 by bolts, which is used to install an oil return sequence valve group, a low-speed speed regulating valve 4 and a high-speed speed regulating valve 13 are respectively installed on the other side of the upper surface of the valve body 1, a relief valve 9 and an oil return sequence valve 10 are installed on one side of the valve body 1, the relief valve 9 cooperates with the low-speed speed regulating valve 4 and the high-speed speed regulating valve 13 to set a specific speed limit value, a hydraulically controlled one-way valve 8 is installed on the other side of the valve body 1, and a hydraulically controlled one-way valve 8 is installed on the side of the valve body 1. A plurality of one-way valves 2 are installed on the surface, and a low-speed ball valve 3 and a high-speed ball valve 14 for controlling low speed and high speed are respectively installed on the adjacent surfaces of the side of the valve body 1. A two-way plug-in is installed on the inner side of the valve body 1. The two-way plug-in is used in conjunction with the hydraulically controlled one-way valve 8 to control the opening of the return oil sequence valve group. The side of the valve body 1 is provided with oil inlet and outlet ports P1, P3 connected to the speed pump, an oil supply port P2, and oil return ports T1, T2, among which T1 and T2 can be directly returned to the oil tank or returned to the oil tank through an oil return pipe.

[0027] See Figure 3 In the figure, P is connected to the linkage port of the hydraulic system of the equipment where the dual-speed detection device is installed. The trigger value can be calibrated on the workbench before the system leaves the factory and then directly blocked; in the figure, P1 and P3 are respectively connected to the oil inlet and outlet of the pump; P2 is connected to the oil supply port of the dual-speed detection device; T1 and T2 are the return oil ports of the hydraulic system of the equipment where the dual-speed detection device is installed, which can be returned to the oil tank directly or returned to the oil tank together with other return oil through the return oil pipe.

[0028] Calibration of the speed detection device trigger speed value: The speed detection device trigger speed value of the speed detection device is calibrated by the manufacturer according to the specific speed value provided by the user before leaving the factory.

[0029] Connect the dual-speed detection devices P1 and P3 to the oil inlet and outlet of the speed calibration workbench pump respectively; connect P2 to the oil tank of the speed calibration workbench; and connect T1 and T2 to the oil tank of the speed calibration workbench.

[0030] Working principle:

[0031] Start the workbench hydraulic station, open the low-speed ball valve 3 (the high-speed ball valve is in the closed state), slowly fine-tune the low-speed speed regulating valve 4, and observe the workbench pressure gauge at the same time. When the pressure gauge reaches a certain pressure value and then quickly falls back and fluctuates, the speed value at this time is the calibration value of the low-speed trigger speed of the dual-speed detection device; close the low-speed ball valve 3, open the high-speed ball valve 14, slowly fine-tune the high-speed speed regulating valve 13, and observe the workbench pressure gauge at the same time. When the pressure gauge reaches a certain pressure value and then quickly falls back and fluctuates, the speed value at this time is the calibration value of the high-speed trigger speed of the dual-speed detection device.

[0032] Installation of the hydraulic dual-speed detection device: hang the speed device on the track where the monorail locomotive runs; the dual-speed detection device is installed on the dual-speed detection device installation platform reserved for the monorail locomotive; the oil pipe in the middle part of the speed pump is directly connected to the monorail locomotive oil tank; the dual-speed detection device P1 and P3 are respectively connected to the oil inlet and outlet of the speed pump; P2 is connected to the liquid supply pipe provided by the monorail locomotive to the dual-speed detection device; T1 and T2 are directly connected to the monorail locomotive oil tank.

[0033] The above description is only a preferred embodiment of the present utility model patent and is not intended to limit the present utility model patent. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model patent shall be included in the protection scope of the present utility model patent.

Claims

1. A hydraulic dual-speed detection device, which is installed on a monorail locomotive track (18), wherein the monorail locomotive track (18) is adapted to a movable monorail locomotive, that is, the monorail locomotive includes a supporting trolley (19), and the monorail locomotive track (18) is installed with a hydraulic pump for providing a moving power for the supporting trolley (19), and the supporting trolley (19) is provided with a moving wheel (20) placed on the monorail locomotive track (18), characterized in that: include: Speed ​​taking device, hydraulic dual speed detection device; The speed-taking device is composed of a frame (16), a speed-taking wheel (15), and a speed-taking pump (17). The frame (16) is located on a supporting trolley (19), and one end of the frame is connected to the speed-taking wheel (15), and the other end is connected to the speed-taking pump (17). The speed-taking wheel (15) is close to the moving wheel (20). The hydraulic dual-speed detection device is installed on the monorail crane. As the monorail crane runs at the same speed on the monorail crane track (18), the real-time running speed of the monorail crane is obtained by rotating the speed-taking wheel (15). The hydraulic dual-speed detection device comprises: a valve body (1), one side of the upper surface of the valve body (1) is connected to a cover plate (7) by bolts, and is used to install an oil return sequence valve group; the other side of the upper surface of the valve body (1) is respectively installed with a low-speed speed regulating valve (4) and a high-speed speed regulating valve (13); one side of the valve body (1) is installed with a relief valve (9) and an oil return sequence valve (10); the relief valve (9) cooperates with the low-speed speed regulating valve (4) and the high-speed speed regulating valve (13) to set a specific speed limit value; the other side of the valve body (1) is installed with a hydraulically controlled one-way valve (8) A plurality of one-way valves (2) are installed on the side of the valve body (1), and a low-speed ball valve (3) and a high-speed ball valve (14) for controlling low speed and high speed are installed on adjacent sides of the valve body (1), respectively. A two-way plug-in is installed on the inner side of the valve body (1), and the two-way plug-in is used in conjunction with a hydraulically controlled one-way valve (8) to control the opening of the oil return sequence valve group. The side of the valve body (1) is provided with oil inlet and outlet ports P1 and P3 connected to a speed pump, an oil supply port P2, and oil return ports T1 and T2, wherein T1 and T2 can be directly returned to the oil tank or returned to the oil tank through an oil return pipe.

2. A hydraulic dual-speed detection device according to claim 1, characterized in that: There are four one-way valves (2) to form a two-way oil suction circuit, that is, the hydraulic pump of the monorail crane can achieve normal oil suction and oil discharge in both forward and reverse rotations.

3. A hydraulic dual-speed detection device according to claim 1, characterized in that: The side of the valve body (1) is provided with a plurality of plugs for sealing the process holes of the valve body (1) during the processing, and they are plug one (5) and plug two (6).

4. A hydraulic dual-speed detection device according to claim 1, characterized in that: The number of the cover plates (7) is 2, the number of the oil return sequence valves (10) is 2, forming an oil return sequence valve group, and the number of the two-way plug-ins is 2.

Images