Interlock switch device for pneumatic drilling rig

Abstract

The present invention discloses an interlock switch device for a pneumatic drill, which mainly solves the problem that the existing device may cause personal injury due to misoperation during actual use. The device comprises: a valve body, the middle of which is hollow cylindrical, and the valve body has a semicircular groove, which is arranged in the lower half of the hollow cylindrical part of the valve body; a straight groove, which is arranged in the left front of the semicircular groove; an interlock shaft, which is located in the valve body, and has a semicircular hole, one of which is provided in the upper surface and the right surface of the interlock shaft, and two are provided in the lower surface of the interlock shaft; a first sphere, which is arranged in the semicircular hole in the right surface of the interlock shaft and is located in the semicircular groove. The present invention has the beneficial effect of being able to prevent safety hazards caused by misoperation and greatly improving the safety of the machine.

Description

Technical Field

[0001] The invention relates to the application field of ball valves, and in particular to an interlocking switch device for a pneumatic drilling rig. Background Art

[0002] Pneumatic drilling rigs are roadway bolt support equipment used in coal mines. They have outstanding advantages in improving support effects, reducing costs, accelerating roadway construction, reducing auxiliary transportation volume, reducing labor intensity, and improving roadway section utilization. Pneumatic drilling rigs are small in size, light in weight, high in torque, and easy to maintain.

[0003] At present, some pneumatic drills use switches that are controlled separately. In actual use by users, it is easy to cause misoperation, resulting in personal injury. Therefore, there is a need for an interlocking device that can prevent the pneumatic motor from starting when the permanent magnet has no suction, and prevent the permanent magnet from closing when the pneumatic motor is working. Summary of the invention

[0004] The present invention aims to provide an interlock switch device for a pneumatic drill to solve the problem of personal injury caused by misoperation during actual use.

[0005] To achieve the above objectives, the embodiment of the present invention adopts the following scheme:

[0006] An interlock switch device for a pneumatic drilling rig, comprising:

[0007] The valve body is hollow cylindrical in the middle and has

[0008] A semicircular groove, the semicircular groove being arranged in the lower half of the hollow cylinder in the valve body;

[0009] A straight groove, the straight groove is arranged at the left front of the semicircular groove;

[0010] An interlocking shaft is located in the valve body and has

[0011] A semicircular hole, wherein one of the semicircular holes is provided in the upper surface and the right surface of the interlocking shaft, and two of the semicircular holes are provided in the lower surface of the interlocking shaft;

[0012] A first sphere is disposed in a semicircular hole in the right surface of the interlocking shaft and is located in the semicircular groove.

[0013] The arc angle of the semicircular groove is 180°, and the rear end of the straight groove is connected to the leftmost end of the semicircular groove; the groove diameters of the semicircular groove and the straight groove are the same as the body diameter of the first sphere, and the semicircular hole limits the movement trajectory of the first sphere, so that the first sphere can slide stably in the semicircular groove and the straight groove without shaking; the first sphere is made of hard material so as not to be deformed by external force during movement.

[0014] By rotating the interlocking shaft 180°, the first sphere slides from the rightmost end of the semicircular groove to the leftmost end, and the permanent magnet is started. Then, by pulling the interlocking shaft, the first sphere moves from the rear end to the front end of the straight groove, and the pneumatic motor is started to achieve the purpose of interlocking. When the interlocking shaft is rotated, only the permanent magnet is started, and the pneumatic motor is not started. After starting the pneumatic motor, the pneumatic motor must be turned off first to turn off the permanent magnet.

[0015] Preferably, an air inlet and an air outlet are provided above the valve body, the air inlet is located behind the air outlet, and the air inlet and the air outlet pass through the top of the valve body to the inside of the valve body.

[0016] Preferably, a screw is provided in the upper portion of the valve body, a spring is provided at the bottom of the screw, and the screw and the spring are located in front of the air outlet.

[0017] Preferably, the semicircular hole on the upper surface of the interlocking shaft is located directly below the spring, and a second sphere is provided between the spring and the semicircular hole on the upper surface of the interlocking shaft. The second sphere is made of a hard material, is used to prevent deformation due to external force during movement, and plays a role in stabilizing the interlocking shaft in the semicircular hole.

[0018] Preferably, bearings are provided at front and rear positions of the valve body, the interlocking shaft passes through the bearings, and a first gear is provided at the front end of the interlocking shaft.

[0019] Preferably, a permanent magnet shaft is provided on one side of the valve body, a second gear is provided at the front end of the permanent magnet shaft, and the second gear is meshed with the first gear.

[0020] Preferably, the rightmost end of the semicircular groove is the first groove point, the leftmost end is the second groove point, the front end of the straight groove is the third groove point, and the third groove point and the second groove point are on the same straight line.

[0021] Preferably, a semicircular hole on the upper surface, a semicircular hole on the right surface and a semicircular hole on the lower surface of the interlocking shaft are all on the same plane, and another semicircular hole on the lower surface of the interlocking shaft is behind the previous semicircular hole.

[0022] Preferably, the two semicircular holes on the lower surface of the interlocking shaft are located on the same straight line, and the distance between the two semicircular holes on the lower surface of the interlocking shaft is the length of the straight groove.

[0023] A method for using an interlock switch device of a pneumatic drilling rig, comprising:

[0024] The interlock shaft is rotated 180° clockwise, and the semicircular hole on the lower surface of the interlock shaft changes to a semicircular hole on the upper surface. The second sphere is stuck in the semicircular hole on the upper surface of the interlock shaft under the action of the spring, and the first sphere slides from the first groove point at the right end of the semicircular groove to the second groove point at the left end of the semicircular groove. The interlock shaft also drives the first gear to rotate, the first gear drives the second gear to rotate, and the second gear drives the permanent magnet shaft to rotate, so that the permanent magnet is in the state of maximum suction, but at this time the air inlet and the air outlet are still in a closed state, and the starter motor cannot be started;

[0025] Pull the interlocking shaft forward to make the first ball slide along the second slot point at the rear end of the straight slot to the third slot point at the front end of the straight slot. At this time, the permanent magnet is still in the state of maximum suction. At this time, the air inlet and the air outlet are in a conducting state, and the speed of the pneumatic motor increases from slow to fast until it is fully started.

[0026] Beneficial effects of the present invention:

[0027] The present invention is an interlock switch device for a pneumatic drilling machine. By rotating the interlock shaft 180 degrees, the first sphere slides from the rightmost end of the semicircular groove to the leftmost end. At this time, the permanent magnet reaches the maximum suction state, but the air inlet and the air outlet are not connected at this time, and the pneumatic motor is not started. Then the interlock shaft is pulled forward to slide the first sphere forward in the straight groove until the second sphere is stuck in the semicircular hole. At this time, the air inlet and the air outlet are slowly connected, and the pneumatic motor is slowly started. During the entire operation process, the interlock switch completely restricts the operator's operation sequence. When the permanent magnet is not started, the pneumatic motor cannot be started. When the pneumatic motor has not been turned off, the permanent magnet cannot be turned off. Therefore, the present invention has the beneficial effect of preventing safety hazards caused by misoperation and greatly improving the safety of the machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the valve body in the present invention.

[0029] Figure 2 It is a schematic diagram of the valve body of the present invention being equipped with an interlocking shaft.

[0030] Figure 3 It is a half-section schematic diagram of the valve body in the present invention.

[0031] Figure 4 It is a schematic diagram of the interlocking shaft after rotation in the present invention.

[0032] Figure 5 It is a full cross-sectional view of the present invention.

[0033] Figure 6 It is a schematic diagram of the interlocking shaft of the present invention.

[0034] 1. Valve body 2. Air inlet 3. Air outlet

[0035] 4. Interlocking shaft 5. First sphere 6. Second sphere

[0036] 7. Bearing 8. First gear 9. Second gear

[0037] 10. Permanent magnet axis 101. First slot point 102. Second slot point

[0038] 103, third slot point 104, semicircular slot 105, straight slot

[0039] 41. Semicircular hole 42. Screw 43. Spring DETAILED DESCRIPTION

[0040] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] In the description of the present invention, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] For the purpose of simplicity and illustration, the principles of the embodiments are described mainly by reference to examples. In the following description, many specific details are proposed to provide a thorough understanding of the embodiments. However, it is obvious. For those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known methods and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments may be used in combination with each other.

[0044] like Figures 1 to 3 As shown, an interlock switch device for a pneumatic drilling rig includes: a valve body 1, the middle of the valve body 1 is hollow cylindrical, the valve body 1 has a semicircular groove 104, and the semicircular groove 104 is arranged in the lower half of the hollow cylinder in the valve body 1; a straight groove, the straight groove is arranged in the left front of the semicircular groove 104; an interlocking shaft 4, the interlocking shaft is located in the valve body 1, the interlocking shaft has a semicircular hole 41, the semicircular hole 41 is respectively provided with one in the upper surface and the right surface of the interlocking shaft, and two are provided on the lower surface of the interlocking shaft; a first sphere 5, the first sphere 5 is arranged in the semicircular hole 41 in the right surface of the interlocking shaft 4, and is located in the semicircular groove 104.

[0045] Specifically, an air inlet 2 and an air outlet 3 are provided above the valve body 1 , the air inlet 2 is located behind the air outlet 3 , and the air inlet 2 and the air outlet 3 pass through the top of the valve body 1 to the inside of the valve body 1 .

[0046] Specifically, a screw 42 is provided in the upper portion of the valve body 1 , a spring 43 is provided at the bottom of the screw 42 , and the screw 42 and the spring 43 are located in front of the air outlet 3 .

[0047] Specifically, the semicircular hole 41 on the upper surface of the interlocking shaft is located directly below the spring 43 , and the second sphere 6 is provided between the spring 43 and the semicircular hole 41 on the upper surface of the interlocking shaft.

[0048] Specifically, bearings 7 are provided at the front and rear positions of the valve body 1 , the interlocking shaft passes through the bearing 7 , and a first gear 8 is provided at the front end of the interlocking shaft.

[0049] Specifically, a permanent magnet shaft 10 is provided on one side of the valve body 1 , a second gear 9 is provided at the front end of the permanent magnet shaft 10 , and the second gear 9 is meshed with the first gear 8 .

[0050] Specifically, the rightmost end of the semicircular groove 104 is the first groove point 101 , the leftmost end is the second groove point 102 , and the front end of the straight groove is the third groove point 103 , and the third groove point 103 and the second groove point 102 are on the same straight line.

[0051] Specifically, a semicircular hole 41 on the upper surface, a semicircular hole 41 on the right surface and a semicircular hole 41 on the lower surface of the interlocking shaft are all on the same plane, and another semicircular hole 41 on the lower surface of the interlocking shaft is behind the previous semicircular hole 41 .

[0052] Specifically, the two semicircular holes 41 on the lower surface of the interlocking shaft are located on the same straight line, and the distance between the two semicircular holes 41 on the lower surface of the interlocking shaft is the length of the straight groove.

[0053] like Figure 5 As shown, a method for using an interlock switch device of a pneumatic drilling rig comprises:

[0054] The interlocking shaft 4 is rotated 180° clockwise, and the semicircular hole 41 on the lower surface of the interlocking shaft 4 is changed into the semicircular hole 41 on the upper surface. The second sphere 6 is stuck in the semicircular hole 41 on the upper surface of the interlocking shaft 4 under the action of the spring 43, and the first sphere 5 slides from the first groove point 101 at the right end of the semicircular groove 104 to the second groove point 102 at the left end of the semicircular groove 104. The interlocking shaft 4 also drives the first gear 8 to rotate, the first gear 8 drives the second gear 9 to rotate, and the second gear 9 drives the permanent magnet shaft 10 to rotate, so that the permanent magnet is in the state of maximum suction, but at this time the air inlet 2 and the air outlet 3 are still in a closed state, and the starter motor cannot be started;

[0055] Pull the interlocking shaft 4 forward. A handle is connected to the front of the interlocking shaft 4. The operator can pull the handle to drive the interlocking shaft 4 to move, so that the first sphere 5 slides along the second groove point 102 at the rear end of the straight groove to the third groove point 103 at the front end of the straight groove. At this time, the permanent magnet is still in the maximum suction state. At this time, the air inlet 2 and the air outlet 3 are in a conducting state, and the speed of the pneumatic motor increases from slow to fast until it is fully started.

[0056] The present invention is an interlock switch device for a pneumatic drilling rig. By rotating the interlock shaft 4 by 180°, the first sphere 5 slides from the rightmost end to the leftmost end of the semicircular groove 104, and the permanent magnet reaches the maximum suction state. However, at this time, the air inlet 2 and the air outlet 3 are not connected, and the pneumatic motor is not started. Then the interlock shaft 4 is pulled backward to make the first sphere 5 slide backward in the straight groove until the second sphere is stuck in the semicircular hole 41. At this time, the air inlet 2 and the air outlet 3 are slowly connected, and the pneumatic motor is slowly started. During the entire operation process, the interlock switch completely restricts the operator's operation sequence. When the permanent magnet is not started, the pneumatic motor cannot be started. When the pneumatic motor has not been turned off, the permanent magnet cannot be turned off. Therefore, the present invention has the beneficial effect of preventing safety hazards caused by misoperation and greatly improving the safety of the machine.

[0057] Although the above describes the illustrative specific embodiments of the present invention so that those skilled in the art can understand the present invention, the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, all inventions and creations using the concepts of the present invention are protected.

Claims

1. An interlock switch device for a pneumatic drilling rig, wherein: include: The valve body is hollow cylindrical in the middle and has A semicircular groove, the semicircular groove being arranged in the lower half of the hollow cylinder in the valve body; A straight groove, the straight groove is arranged in the left front of the semicircular groove; an interlocking shaft, the interlocking shaft is located in the valve body, and the interlocking shaft has a semicircular hole, one of which is provided in each of the upper surface and the right surface of the interlocking shaft, and two of which are provided in the lower surface of the interlocking shaft; a first sphere, which is disposed in the semicircular hole in the right surface of the interlocking shaft and is located in the semicircular groove; An air inlet and an air outlet are provided above the valve body, the air inlet is located behind the air outlet, and the air inlet and the air outlet pass through the top of the valve body to the inside of the valve body; A screw is provided in the upper part of the valve body, a spring is provided at the bottom of the screw, and the screw and the spring are located in front of the air outlet; The semicircular hole on the upper surface of the interlocking shaft is located directly below the spring, and a second sphere is provided between the spring and the semicircular hole on the upper surface of the interlocking shaft; The rightmost end of the semicircular groove is the first groove point, the leftmost end is the second groove point, the front end of the straight groove is the third groove point, and the third groove point is on the same straight line as the second groove point.

2. An interlock switch device for a pneumatic drilling rig according to claim 1, wherein: Bearings are arranged at the front and rear positions of the valve body, the interlocking shaft passes through the bearings, and a first gear is arranged at the front end of the interlocking shaft.

3. An interlock switch device for a pneumatic drilling rig according to claim 2, wherein: A permanent magnet shaft is provided at one side of the valve body, a second gear is provided at the front end of the permanent magnet shaft, and the second gear is meshed with the first gear.

4. An interlock switch device for a pneumatic drilling rig according to claim 1, wherein: A semicircular hole on the upper surface, a semicircular hole on the right surface and a semicircular hole on the lower surface of the interlocking shaft are all on the same plane, and another semicircular hole on the lower surface of the interlocking shaft is behind the previous semicircular hole.

5. An interlock switch device for a pneumatic drilling rig according to claim 1, wherein: The two semicircular holes on the lower surface of the interlocking shaft are located on the same straight line, and the distance between the two semicircular holes on the lower surface of the interlocking shaft is the length of the straight groove.

6. A method for using the interlock switch device of a pneumatic drilling rig as claimed in claim 1, comprising: The interlocking shaft is rotated 180° clockwise, and the semicircular hole on the lower surface of the interlocking shaft changes to a semicircular hole on the upper surface. The second sphere is stuck in the semicircular hole on the upper surface of the interlocking shaft under the action of the spring, and the first sphere slides from the first groove point at the right end of the semicircular groove to the second groove point at the left end of the semicircular groove. The interlocking shaft also drives the first gear to rotate, the first gear drives the second gear to rotate, and the second gear drives the permanent magnet shaft to rotate, so that the permanent magnet is in the state of maximum suction, but at this time the air inlet and the air outlet are still in a closed state, and the pneumatic motor cannot be started; Pull the interlocking shaft forward to make the first ball slide along the second slot point at the rear end of the straight slot to the third slot point at the front end of the straight slot. At this time, the permanent magnet is still in the state of maximum suction. At this time, the air inlet and the air outlet are in a conducting state, and the speed of the pneumatic motor increases from slow to fast until it is fully started.

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