Mining electric reversing combination switch propulsion mechanism

Abstract

A mining electric reversing combination switch propelling mechanism comprises a transmission shaft, and one end of the transmission shaft is connected with a handle. A right-hand thread section and a left-hand thread section are arranged on the outer surface of the transmission shaft, the outer surface of the right-hand thread section is connected with a right-hand nut sleeve through threads, the right-hand nut sleeve is connected to a first mounting plate in an embedded mode, the rear side face of the first mounting plate is connected with a conducting rod mounting plate through a connecting sleeve rod, and a conducting rod is connected to the middle of the conducting rod mounting plate in an embedded mode. The rear end of the conducting rod is matched with the high-voltage binding post; the outer surface of the left-hand thread section is connected with a left-hand nut sleeve through threads, the left-hand nut sleeve is connected to the second mounting plate in an embedded mode, a lock rod is mounted on the front side face of the second mounting plate, and the lock rod is movably matched with a door mortise lock of the mining vacuum electromagnetic starter. According to the utility model, the defects in the prior art are overcome, and the lock rods can be synchronously interlocked when the conducting rod is electrified; and when the lock rod is unlocked, the conductive rod can also be powered off synchronously, so that the combined interlocking effect is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to mining equipment technical field, concretely relates to a kind of mining electric commutating combination switch advancing mechanism. BACKGROUND

[0002] The safe starting of various motors in coal mine operation site is a very important part of the safety production of coal mining enterprises. At present, the equipment used for starting motor in mine is mainly mining explosion-proof and intrinsic safety type vacuum electromagnetic starter (hereinafter referred to as electromagnetic starter). The electromagnetic starter must be maintained in a safe state, i.e. in the case of power failure. In order to prevent the occurrence of opening the door to maintain the electromagnetic starter under power supply, the starter is usually provided with a combination switch.

[0003] However, the control circuit of the combination switch on the market is generally controlled by a change-over switch, and other mechanisms are needed to achieve power-off opening. The design is relatively complex. At the same time, in order to achieve control of the control circuit at high voltage, a bulky isolation switch is needed, which is expensive. CONTENT OF THE UTILITY MODEL

[0004] In view of the shortcomings of the prior art, the utility model provides a kind of mining electric commutating combination switch advancing mechanism, overcome the shortcomings of prior art, realize when the electrically conductive rod is powered on, lock rod can be synchronized interlock;When the lock rod is unlocked, the electrically conductive rod can also be synchronized to be powered off, so as to realize the effect of combination interlock.

[0005] To achieve the above purpose, the utility model is realized by the following technical scheme:

[0006] A kind of mining electric commutating combination switch advancing mechanism, including transmission shaft, the one end of the transmission shaft passes through the front side of the shell of mining vacuum electromagnetic starter and is fixedly connected with handle, the transmission shaft is rotatably connected between the shell of mining vacuum electromagnetic starter by bearing;

[0007] The outer surface of the transmission shaft is respectively provided with positive thread segment and reverse thread segment, the outer surface of the positive thread segment is connected with positive nut sleeve by thread, the positive nut sleeve is fixedly embedded on the first mounting plate, the rear side of the first mounting plate is connected with electrically conductive rod mounting plate by connecting sleeve rod, the electrically conductive rod mounting plate is fixedly embedded with electrically conductive rod in the middle, the rear end of the electrically conductive rod is matched with high-voltage terminal post in the mining vacuum electromagnetic starter and is movably inserted;The outer surface of the reverse thread segment is connected with reverse nut sleeve by thread, the reverse nut sleeve is fixedly embedded on the second mounting plate, the front side of the second mounting plate is installed with lock rod, and the lock rod is movably matched with the door lock of the mining vacuum electromagnetic starter.

[0008] Preferably, the two support seats are fixedly installed on the inner wall of the shell of the mine-used vacuum electromagnetic starter, the rear side of each of the two support seats is connected with one end of a guide shaft, the other end of the guide shaft is sequentially arranged through the second mounting plate, the first mounting plate and the conductive rod mounting plate and is fixedly installed on the front side of the terminal post mounting plate, the high-voltage terminal post is fixedly embedded on the terminal post mounting plate, and the terminal post mounting plate is fixedly installed in the inner cavity of the mine-used vacuum electromagnetic starter.

[0009] Preferably, the positive toothed section and the reverse toothed section adopt a two-thread screw structure.

[0010] Preferably, a limiting nut is fixedly installed on the guide shaft.

[0011] Preferably, a threaded hole is arranged on the surface of the limiting nut, the threaded hole is communicated with the inner ring of the limiting nut, and a locking pin is threadedly connected in the threaded hole.

[0012] Preferably, one end of a support plate is fixedly installed on the front side inner wall of the shell of the mine-used vacuum electromagnetic starter, a clamping block is fixedly installed above the other end of the support plate, and the transmission shaft is arranged through and movably connected with the clamping block.

[0013] The utility model provides a kind of mine electric commutating combination switch advancing mechanism.It has the following beneficial effects: by rotating handle to drive transmission shaft positive rotation, so it can be based on screw pair principle, to drive positive toothed nut sleeve and reverse toothed nut sleeve to move along the axial direction of transmission shaft by the rotation of transmission shaft, and because the thread direction of positive toothed section and reverse toothed section is opposite, so that positive toothed nut sleeve and reverse toothed nut sleeve can be synchronously moved in opposite directions, in turn can drive first mounting plate and second mounting plate to move in opposite directions, in turn synchronously drive conductive rod mounting plate to move towards high-voltage terminal post or away from it.At the same time, lock rod is also synchronously moved towards door lock or away from it by second mounting plate, so that lock rod can be synchronously interlocked when conductive rod is connected to power, and when lock rod is unlocked, conductive rod can also be synchronously powered off, the synchronous operation of conductive rod and lock rod is realized to realize the effect of combination interlocking, so that the safety of electromagnetic starter in mine is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the description of the prior art.

[0015] Fig. 1 The structural schematic diagram of the utility model;

[0016] Fig. 2 The installation structure diagram of the transmission shaft in the utility model shows that

[0017] Mark explanation in the drawing:

[0018] 1, transmission shaft; 2, the shell of mine vacuum electromagnetic starter; 3, toothed nut sleeve; 4, first mounting plate; 5, second mounting plate; 6, conductive rod mounting plate; 7, conductive rod; 8, high-voltage terminal post; 9, reverse toothed nut sleeve; 10, lock rod; 11, support seat; 12, guide shaft; 13, terminal post mounting plate; 14, guide sleeve; 15, handle; 16, connecting sleeve rod; 17, limit nut; 18, support plate; 19, clamping block; 20, locking pin. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the utility model more clear, the technical scheme in the utility model will be described clearly and completely below by combining with the drawings in the utility model.

[0020] Example one, as Figs. 1-2 shown, a mine electric commutating combined switch advancing mechanism, including transmission shaft 1, one end of transmission shaft 1 passes out the front side of the shell 2 of mine vacuum electromagnetic starter and is fixedly connected with handle 15, transmission shaft 1 and the shell 2 of mine vacuum electromagnetic starter are rotatably connected through bearing;

[0021] Transmission shaft 1 outer surface is respectively provided with toothed thread section and reverse toothed thread section, the outer surface of toothed thread section is connected with toothed nut sleeve 3 through thread, toothed nut sleeve 3 is fixedly embedded on first mounting plate 4, first mounting plate 4 rear side is connected with conductive rod mounting plate 6 through connecting sleeve rod 16, conductive rod mounting plate 6 middle fixedly embedded with conductive rod 7, the rear end of conductive rod 7 is matched with high-voltage terminal post 8 in the movable insertion of mine vacuum electromagnetic starter;The outer surface of reverse toothed thread section is connected with reverse toothed nut sleeve 9 through thread, reverse toothed nut sleeve 9 is fixedly embedded on second mounting plate 5, and second mounting plate 5 front side is provided with lock rod 10, and lock rod 10 is movably matched with the door lock of mine vacuum electromagnetic starter.

[0022] In the embodiment, two support seats 11 are fixedly installed on the inner wall of the shell 2 of the mine-used vacuum electromagnetic starter, the rear side of each of the two support seats 11 is connected with one end of a guide shaft 12, the other end of the guide shaft 12 passes through the second mounting plate 5, the first mounting plate 4 and the conductive rod mounting plate 6 in sequence and is fixedly installed on the front side of a terminal post mounting plate 13, a high-voltage terminal post 8 is fixedly embedded on the terminal post mounting plate 13, and the terminal post mounting plate 13 is fixedly installed in the inner cavity of the mine-used vacuum electromagnetic starter; the guide shaft 12 is parallel to the transmission shaft 1; a connecting sleeve rod 16 is slidingly sleeved on the outer surface of the guide shaft 12, and the second mounting plate 5 is slidingly connected with the outer surface of the guide shaft 12 through a guide sleeve 14.

[0023] Working principle:

[0024] In work, when the door needs to be locked and powered on, the handle 15 can be directly rotated forward, so that the handle 15 drives the transmission shaft 1 to rotate forward, and then, based on the threaded pair principle, the transmission shaft 1 drives the forward threaded nut sleeve 3 and the reverse threaded nut sleeve 9 to move along the axial direction of the transmission shaft 1 through the threaded connection relationship between the forward threaded section on the outer surface of the transmission shaft 1 and the forward threaded nut sleeve 3 and the threaded connection relationship between the reverse threaded section on the outer surface of the transmission shaft 1 and the reverse threaded nut sleeve 9. Since the threaded directions of the forward threaded section and the reverse threaded section are opposite, the forward threaded nut sleeve 3 and the reverse threaded nut sleeve 9 can move in opposite directions synchronously. Therefore, the forward rotation of the transmission shaft 1 drives the forward threaded nut sleeve 3 and the reverse threaded nut sleeve 9 to move in opposite directions respectively, so that the first mounting plate 4 is driven by the forward threaded nut sleeve 3 to move rearward, and then the conductive rod mounting plate 6 is synchronously driven by the connecting sleeve rod 16 to move toward the high-voltage terminal post 8, so that the conductive rod 7 on the conductive rod mounting plate 6 can be inserted into the high-voltage terminal post 8 correspondingly to realize the closing action. At the same time, the second mounting plate 5 is also synchronously driven by the reverse threaded nut sleeve 9 to move forward, and then the lock rod 10 on the front side of the second mounting plate 5 is driven to move toward the door lock, so that the lock rod 10 can abut against the door lock to realize the locking effect of the door body of the mine-used vacuum electromagnetic starter. Then, when powered on, the door body of the mine-used vacuum electromagnetic starter can also be locked synchronously to realize the combined linkage effect of power-on and door locking.

[0025] Similarly, when the door needs to be opened, the handle 15 is rotated in the reverse direction to drive the transmission shaft 1 to rotate in the reverse direction, and then through the threaded pair principle, the positive threaded nut sleeve 3 and the reverse threaded nut sleeve 9 are simultaneously moved towards each other, so that the second mounting plate 5 is driven by the reverse threaded nut sleeve 9 to move backward, and then the second mounting plate 5 drives the lock rod 10 to separate from the door lock, and at the same time, the first mounting plate 4 is also simultaneously driven by the positive threaded nut sleeve 3 to move forward, and then the connecting sleeve rod 16 drives the conductive rod mounting plate 6 to move backward synchronously, so that the conductive rod 7 is separated from the high-voltage terminal post 8, thereby realizing the combined linkage effect of opening the door and breaking the power.

[0026] The whole process makes the conductive rod 7 connected to the power, and the lock rod 10 can be synchronously interlocked, and when the lock rod 10 is unlocked, the conductive rod 7 can also be synchronously powered off, so as to effectively realize the combined interlocking effect through the synchronous operation of the conductive rod 7 and the lock rod 10.

[0027] In this embodiment, two parallel guide shafts 12 are provided, and the first mounting plate 4 and the conductive rod mounting plate 6 are slidably connected to the outer surface of the guide shaft 12 through the connecting sleeve rod 16, and the second mounting plate 5 is slidably connected to the outer surface of the guide shaft 12 through the guide sleeve 14. Therefore, the guide shaft 12 can be used to limit and guide the first mounting plate 4, the conductive rod mounting plate 6 and the second mounting plate 5, so as to effectively ensure the stability of the first mounting plate 4, the conductive rod mounting plate 6 and the second mounting plate 5 during sliding, and also effectively avoid the problem of angle rotation of the first mounting plate 4, the conductive rod mounting plate 6 and the second mounting plate 5.

[0028] In embodiment two, as a further preferred embodiment of embodiment one, the positive threaded section and the reverse threaded section both adopt a two-thread screw structure. By adopting a two-thread screw structure, the lead can be effectively increased, thereby effectively reducing the number of rotations of the handle 15, achieving the purpose of fast forward and fast backward.

[0029] In embodiment three, as a further preferred embodiment of embodiment one, a limiting nut 17 is fixedly installed on the guide shaft 12. In this embodiment, four groups of limiting nuts 17 can be provided, and the four groups of limiting nuts 17 are respectively located at the two end positions of the positive threaded section and the two end positions of the reverse threaded section. The limiting nut 17 can effectively limit the movement position of the positive threaded nut sleeve 3 and the reverse threaded nut sleeve 9, thereby achieving the purpose of precise control.

[0030] In addition, in the embodiment, the limiting nut 17 can be arranged only at a position between the male thread section and the female thread section. The front side of the second mounting plate 5 is in contact with the rear side of the support base 11, so that when the male nut sleeve 3 and the female nut sleeve 9 are close to each other, the position is limited by the limiting nut 17, and when the male nut sleeve 3 and the female nut sleeve 9 are away from each other, the position is limited by the contact between the second mounting plate 5 and the support base 11.

[0031] In the fourth embodiment, as a further preferred solution of the third embodiment, a threaded hole is formed in the surface of the limiting nut 17, the threaded hole is in communication with the inner ring of the limiting nut 17, and a locking pin 20 is threadedly connected in the threaded hole. Therefore, when the position of the limiting nut 17 needs to be adjusted, the limiting nut 17 can be directly rotated to adjust the position of the limiting nut 17 through the threaded connection between the limiting nut 17 and the transmission shaft 1, and when the limiting nut 17 is adjusted to a suitable position, the locking pin 20 can be tightened to tightly abut against the outer surface of the transmission shaft 1 through the locking pin 20, so as to fix the position of the limiting nut 17.

[0032] In the fifth embodiment, as a further preferred solution of the first embodiment, one end of the support plate 18 is fixedly installed on the front inner wall of the housing 2 of the mine vacuum electromagnetic starter, the other end of the support plate 18 is fixedly installed with the clamping block 19 above, and the transmission shaft 1 passes through the clamping block 19 and is movably connected with the clamping block 19. The clamping block 19 is arranged to effectively support the transmission shaft 1, so that the clamping block 19 and the bearing in the housing 2 of the mine vacuum electromagnetic starter can effectively support the transmission shaft 1 to ensure the stability of the transmission shaft 1 during work.

[0033] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalent features. The modifications or replacements do not change the essence of the corresponding technical solutions, and do not deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A mine electrically commutated combination switch propulsion mechanism characterized by: Includes a drive shaft (1), one end of which extends through the front side of the housing (2) of the mining vacuum electromagnetic starter and is fixedly connected to a handle (15). The drive shaft (1) and the housing (2) of the mining vacuum electromagnetic starter are rotatably connected by bearings. The outer surface of the drive shaft (1) is provided with a positive thread section and a negative thread section respectively. The outer surface of the positive thread section is connected to a positive nut sleeve (3) by a thread. The positive nut sleeve (3) is fixedly embedded in the first mounting plate (4). The rear side of the first mounting plate (4) is connected to the conductive rod mounting plate (6) by a connecting sleeve rod (16). The conductive rod mounting plate (6) is fixedly embedded in the middle of the conductive rod (7). The rear end of the conductive rod (7) is movably inserted into the high voltage terminal (8) in the mine vacuum electromagnetic starter. The outer surface of the negative thread section is connected to a negative nut sleeve (9) by a thread. The negative nut sleeve (9) is fixedly embedded in the second mounting plate (5). The front side of the second mounting plate (5) is equipped with a locking rod (10). The locking rod (10) is movably engaged with the door lock of the mine vacuum electromagnetic starter.

2. A push mechanism for a mine electrically commutated combination switch according to claim 1, characterized in that: The inner wall of the housing (2) of the mining vacuum electromagnetic starter is fixedly installed with two support seats (11). The rear side of each support seat (11) is connected to one end of the guide shaft (12). The other end of the guide shaft (12) passes through the second mounting plate (5), the first mounting plate (4) and the conductive rod mounting plate (6) in sequence and is fixedly installed on the front side of the terminal mounting plate (13). The high voltage terminal (8) is fixedly embedded in the terminal mounting plate (13). The terminal mounting plate (13) is fixedly installed in the inner cavity of the mining vacuum electromagnetic starter. The guide shaft (12) is set parallel to the transmission shaft (1). The connecting sleeve (16) is slidably sleeved on the outer surface of the guide shaft (12). The second mounting plate (5) is slidably connected to the outer surface of the guide shaft (12) through the guide sleeve (14).

3. The mining electric reversing combination switch propulsion mechanism according to claim 1, characterized in that: Both the positive thread section and the negative thread section adopt a two-thread screw structure.

4. The mining electric reversing combination switch propulsion mechanism according to claim 2, characterized in that: A limit nut (17) is fixedly installed on the guide shaft (12).

5. The mining electric reversing combination switch propulsion mechanism according to claim 4, characterized in that: The limiting nut (17) has a threaded hole on its surface. The threaded hole is connected to the inner ring of the limiting nut (17). A locking pin (20) is threadedly connected inside the threaded hole.

6. The mining electric reversing combination switch propulsion mechanism according to claim 1, characterized in that: One end of a support plate (18) is fixedly installed on the front inner wall of the housing (2) of the mining vacuum electromagnetic starter. A locking block (19) is fixedly installed above the other end of the support plate (18). The drive shaft (1) passes through the locking block (19) and is movably connected to the locking block (19).

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