Downward pressing detection device for car pressing beam of car dumper

Abstract

A car dumper car pressing beam downward pressing detection device comprises a detection mechanism and a detection switch which are used for being installed on a car pressing beam, the detection mechanism comprises a first supporting plate, a second supporting plate, a probe rod, a movable rod and a detection rod, and the first supporting plate and the second supporting plate are fixedly installed on the car pressing beam in an up-down spaced mode; the two feeler levers respectively penetrate through the first supporting plate and the second supporting plate in a sliding mode at intervals, limiting blocks are arranged on the feeler levers and located on the upper side of the first supporting plate, the movable rod is located on the upper side of the second supporting plate, the two ends of the movable rod are hinged to the two feeler levers respectively, the detection rod is installed on the movable rod, and the detection switch is installed on the vehicle pressing beam. When the two feeler levers move upwards by a certain distance, the detection switch detects the detection rod. The two feeler levers make contact with the open wagon to achieve position detection of the wagon pressing beam, and the situation that the proximity switch sends out an error signal to a control room due to the fact that the detection device firstly presses coal briquettes is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of dumper equipment, in particular to a downward pressure detection device for the car pressing beam of a dumper. Background Technique

[0002] The dumper of our company is used for coal unloading operations. The main operating vehicle is a special open wagon with an axle load of 30t C96, and it also takes into account the general open wagons of C80E, C70E, and C80B. Before the dumper performs the tipping operation, it is necessary to press down and fix the open wagon through the car pressing beam. For example, a dumper is disclosed in Chinese patent document CN205820423U. On the car pressing beam, a detection device for detecting the state of the car pressing beam is installed. The currently used detection device is similar to the structure disclosed in CN204473920U. During operation, the car pressing beam slowly moves downward, and the open wagon first contacts the detection device. When the detection plate moves upward and is sensed by the proximity switch, it is thus determined that the car pressing beam has been pressed down in place. Currently, during operation, there is a problem that there are small coal blocks at the position where the open wagon contacts the car pressing beam. The height of the small coal blocks is higher than that of the open wagon. When the car pressing beam presses down, the detection device first presses on the coal blocks. At this time, the detection plate will move upward and be gradually sensed by the proximity switch, but the car pressing beam does not contact and press the open wagon tightly, and the proximity switch sends a wrong signal to the control room. Content of the Utility Model

[0003] The purpose of the utility model is to provide a downward pressure detection device for the car pressing beam of a dumper, which realizes the position detection of the car pressing beam by contacting the open wagon with two probe rods, and reduces the occurrence of the situation where the detection device first presses on the coal blocks and the proximity switch sends a wrong signal to the control room.

[0004] To achieve the above purpose, the utility model provides a downward pressure detection device for the car pressing beam of a dumper, including a detection mechanism and a detection switch for being installed on the car pressing beam. The detection mechanism includes a first support plate, a second support plate, probe rods, a movable rod, and a detection rod. The first support plate and the second support plate are fixedly installed on the car pressing beam at an upper and lower interval. The two probe rods respectively slide through the first support plate and the second support plate at an interval. A limit block is arranged on the probe rod above the first support plate. The movable rod is located above the second support plate. Both ends of the movable rod are hinged to the two probe rods respectively. The detection rod is installed on the movable rod. The detection switch is installed on the car pressing beam and is located above the detection rod. When both of the two probe rods move upward by a certain distance, the detection switch detects the detection rod.

[0005] The detection mechanism is installed in the cavity of the car pressing beam. A window is arranged on the lower side surface of the car pressing beam at a position corresponding to the probe rod. The detection switch is installed in the cavity of the car pressing beam or on the top of the car pressing beam.

[0006] A spring is installed on the probe rod between the limit block and the second support plate.

[0007] A probe plate is installed at the lower end of the probe rod.

[0008] A limiting part is arranged on the lower side of the first support plate of the probe rod, and the diameter of the limiting part is larger than that of the probe rod.

[0009] An internal stud is installed on the movable rod, a thread is arranged on the detection rod, the detection rod is screwed on the internal stud, and a nut is also screwed on the detection rod.

[0010] The detection switch is installed on the bracket, and the bracket is fixedly connected to the car pressing beam.

[0011] The utility model has the following technical effects compared with the prior art:

[0012] The position of the car pressing beam is detected by the contact of two probe rods with the gondola car. When the car pressing beam presses down, if the probe plate at the lower end of one of the probe rods abuts against the coal block on the gondola car, the probe rod abutting against the coal block will move upward at this time. Since there is a certain distance between the two probe rods, the other probe rod will move away from this coal block and will not move upward. At this time, the movable rod is in an inclined state, and the detection rod is also in an inclined state, and the detection rod cannot be detected by the detection switch. When the car pressing beam continues to press down, the coal block under the car pressing beam will be squeezed and crushed, and the other probe rod will gradually move upward. In this process, the right probe rod gradually moves upward, the movable rod gradually becomes horizontal, and the detection rod is straightened, so that the detection rod can be detected by the detection switch. In this way, the situation that the detection device first presses on the coal block and the proximity switch sends a wrong signal to the control room is greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art.

[0014] Figure 1 It is a schematic structural diagram of the utility model.

[0015] Figure 2 For Figure 1 The schematic structural diagram of the A-A cross section in

[0016] Figure 3 It is a schematic diagram of the utility model after both probe rods move upward by a certain distance.

[0017] Figure 4 It is a schematic diagram of the utility model when one of the probe rods abuts against the coal block and moves upward.

[0018] In the figure:

[0019] Car pressing beam 10, window 11;

[0020] Detection mechanism 20, first support plate 21, second support plate 22, probe rod 23, probe plate 231, limiting part 232, limiting block 24, spring 25, movable rod 26, long hole 261, detection rod 27, nut 271, internal stud 28;

[0021] Detection switch 30, bracket 31. Specific implementation mode

[0022] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

[0023] Please refer to Figures 1-4 , a pressing beam downward detection device for a car dumper, including a detection mechanism 20 and a detection switch 30 for being installed on the pressing beam 10. The detection mechanism 20 includes a first support plate 21, a second support plate 22, a probe rod 23, a movable rod 26, and a detection rod 27. The first support plate 21 and the second support plate 22 are fixedly installed on the pressing beam 10 at intervals up and down. Two probe rods 23 respectively slide through the first support plate 21 and the second support plate 22 at intervals. A limiting block 24 is arranged on the probe rod 23 above the first support plate 21. The movable rod 26 is located above the second support plate 22. Two ends of the movable rod 26 are respectively hinged to the two probe rods 23. The detection rod 27 is installed on the movable rod 26. The detection switch 30 is installed on the pressing beam 10 and is located above the detection rod 27. When both probe rods 23 move upward by a certain distance, the detection switch 30 detects the detection rod 27. The position of the pressing beam 10 is detected by the contact of the two probe rods 23 with the open wagon, which greatly reduces the occurrence of the situation that the proximity switch sends a wrong signal to the control room because the detection device presses on the coal block first.

[0024] In this solution, since both probe rods 23 are longitudinally arranged, when the pressing beam 10 is not in contact with the open wagon, the lower ends of the two probe rods 23 extend out of the pressing beam 10 under the action of gravity. When the lower end of the probe rod 23 contacts the open wagon, the probe rod 23 will move upward. The limiting block 24 serves two purposes. One is to play a role in counterweight, and the other is to limit the probe rod 23 to prevent the probe rod 23 from falling out.

[0025] Specifically, two sliding holes are respectively arranged on the first support plate 21 and the second support plate 22. The two probe rods 23 respectively pass through the two corresponding sliding holes. U-shaped notch openings are arranged at both ends of the movable rod 26. Both ends of the movable rod 26 are hinged to the probe rod 23 through the U-shaped notch openings by pins. And one hinge hole at one end of the movable rod 26 is a long hole 261, which is convenient for the movable rod 26 to tilt.

[0026] The detection switch 30 is preferably an electromagnetic induction proximity switch.

[0027] See also Figure 2 The detection mechanism 20 is installed in the cavity of the press beam 10 , a window 11 is provided on the lower side of the press beam 10 at a position corresponding to the probe rod 23 , and the detection switch 30 is installed in the cavity of the press beam 10 or on the top of the press beam 10 .

[0028] Furthermore, a spring 25 is installed on the probe rod 23 between the limit block 24 and the second support plate 22. One end of the spring 25 abuts against the second support plate 22, and the other end abuts against the limit block 24, so that the probe rod 23 can elastically retract and contract. After the probe rod 23 moves up and retracts, the spring 24 gives the limit block 24 a downward force, driving the probe rod 23 to move downward, preventing the probe rod 23 from getting stuck and unable to extend after the pressure beam 10 moves up, thereby improving the stability of the function.

[0029] See also Figure 1 , 2 A probe plate 231 is installed at the lower end of the probe rod 23. The probe plate 231 has a narrower width and a longer length. The narrower width is used to avoid the probe plate 231 from contacting the coal block as much as possible, and the longer length is used to facilitate contact with the open car, because some open cars may be deformed.

[0030] Furthermore, the probe rod 23 is provided with a limiting portion 232 at the lower side of the first support plate 21, and the diameter of the limiting portion 232 is larger than the diameter of the probe rod 23. The limiting portion 232 limits the upward position of the probe rod 23 to prevent the probe rod 23 from excessively moving upward, thereby causing the spring 25 to be squeezed and deformed and the detection switch 30 to be squeezed and damaged by the detection rod 27.

[0031] See also Figure 1 The movable rod 26 is provided with an inner stud 28, the detection rod 27 is provided with a thread, the detection rod 27 is screwed on the inner stud 28, and the detection rod 27 is also screwed with a nut 271. It is convenient to adjust the height of the detection rod 27, and after adjustment, the nut 271 is locked.

[0032] See also Figure 1 , 2 The detection switch 30 is installed on the bracket 31, and the bracket 31 is connected and fixed to the car pressing beam 10. It is convenient to install the detection switch 30.

[0033] In addition to being installed by the bracket 31 , the detection switch 30 can also be directly installed on the upper side of the pressing beam 10 .

[0034] The working principle or action process of the utility model is as follows:

[0035] See also Figure 1 , which is the state where the car pressing beam 10 is not pressed down on the open car, and at this time, the detection plates 231 at the lower ends of the two detection rods 23 extend out of the window 11.

[0036] See also Figure 3, it is the state where the pressing beam 10 presses down on the open wagon. At this time, the pressing beam 10 is in reliable contact and compression with the open wagon, and the probe plates 231 at the lower ends of the two probe rods 23 also abut against the open wagon. Both of the two probe rods 23 move upward by a certain distance, the movable rod 26 moves upward, and the detection rod 27 also moves upward. At this time, the detection rod 27 can be detected by the detection switch 30, and the detection switch 30 sends a pressing signal to the control room.

[0037] See Figure 4 , when the pressing beam 10 presses down, the probe plate 231 at the lower end of one of the probe rods 23 abuts against the coal block on the open wagon. At this time, the probe rod 23 that abuts against the coal block moves upward. Since there is a certain distance between the two probe rods 23, the other probe rod 23 will move away from this coal block and thus will not move upward. At this time, the movable rod 26 is in an inclined state, and the detection rod 27 is also in an inclined state. The detection rod 27 cannot be detected by the detection switch 30. When the pressing beam 10 continues to press down, the coal block under the pressing beam 10 will be squeezed and crushed, and the other probe rod 23 will gradually move upward. In this process, the right probe rod 23 gradually moves upward, the movable rod 26 gradually becomes horizontal, and the detection rod 27 is straightened, so that the detection rod 27 can be detected by the detection switch 30.

Claims

1. A device for detecting downward pressure of a car-turning machine's pressure beam, comprising a detection mechanism (20) and a detection switch (30) for being mounted on the pressure beam (10), characterized in that: The detection mechanism (20) comprises a first support plate (21), a second support plate (22), a probe rod (23), a movable rod (26) and a detection rod (27); the first support plate (21) and the second support plate (22) are fixedly mounted on the press beam (10) at an interval; the two probe rods (23) slide through the first support plate (21) and the second support plate (22) at an interval; a limit block (24) is provided on the probe rod (23) at an upper side of the first support plate (21); the movable rod (26) is located at an upper side of the second support plate (22); two ends of the movable rod (26) are respectively hinged to the two probe rods (23); the detection rod (27) is mounted on the movable rod (26); the detection switch (30) is mounted on the press beam (10) and is located above the detection rod (27); when the two probe rods (23) move upward for a certain distance, the detection switch (30) detects the detection rod (27).

2. A device for detecting downward pressure of a car tipping machine pressure beam according to claim 1, characterized in that: The detection mechanism (20) is installed in the cavity of the press beam (10), a window (11) is provided on the lower side of the press beam (10) at a position corresponding to the probe rod (23), and the detection switch (30) is installed in the cavity of the press beam (10) or on the top of the press beam (10).

3. The device for detecting downward pressure of a car tipping machine pressure beam according to claim 1, characterized in that: A spring (25) is installed on the probe rod (23) between the limit block (24) and the second support plate (22).

4. The device for detecting downward pressure of a car tipping machine pressure beam according to claim 1, characterized in that: A probe plate (231) is mounted on the lower end of the probe rod (23).

5. A device for detecting downward pressure of a car tipping machine pressure beam according to claim 1 or 4, characterized in that: The probe rod (23) is provided with a limiting portion (232) at the lower side of the first support plate (21), and the diameter of the limiting portion (232) is greater than the diameter of the probe rod (23).

6. The device for detecting downward pressure of a car tipping machine pressure beam according to claim 1, characterized in that: An inner stud (28) is installed on the movable rod (26), a thread is provided on the detection rod (27), the detection rod (27) is screwed onto the inner stud (28), and a nut (271) is also screwed onto the detection rod (27).

7. The device for detecting downward pressure of a car tipping machine pressure beam according to claim 1, characterized in that: The detection switch (30) is mounted on a bracket (31), and the bracket (31) is connected and fixed to the vehicle pressing beam (10).

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