Sealing device for transmission shaft of speed reducer of oil pumping unit

Abstract

The utility model belongs to the technical field of pumping units, and particularly relates to a pumping unit speed reducer transmission shaft sealing device which comprises a base plate and a protection device, a driving machine is fixedly connected to the upper surface of the base plate, a speed reducer is fixedly connected to the upper surface of the base plate, and two belts are arranged on the surface of the speed reducer and the surface of the driving machine in a sleeved mode. Two protection devices are arranged on the surface of the base plate and comprise supporting plates, the supporting plates are located over the base plate, supporting rods are fixedly connected to the upper surfaces of the supporting plates, a main cover and an auxiliary cover are slidably connected to the surfaces of the supporting rods, and a cleaning device is arranged at the position, close to the speed reducer and the belt, of the side wall of the fixing frame and comprises a connecting frame. The connecting frame is located on the side wall of the fixing frame, and a cleaning brush is fixedly connected to the side wall of the connecting frame and located on the surface of the belt. By arranging the whole device, the sealing performance of the speed reducer and the belt can be improved, and the possibility that dust and sundries cover the surface of the belt is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pumping units, in particular to a sealing device for the transmission shaft of a speed reducer of a pumping unit. Background Art

[0002] A pumping unit is a kind of machinery and equipment for oil extraction, commonly known as a "nodding donkey", and is the most important lifting equipment in the rod pumping system. Pumping units are mainly divided into two categories: beam pumping units and beamless pumping units. Power is supplied by a prime mover, and the high-speed rotation of the prime mover is changed into the low-speed rotation of the crank of the pumping unit through a speed reducer. The rotary motion is changed into the up-and-down reciprocating motion of the donkey head of the pumping unit by a crank-link-beam mechanism, and the deep well pump is driven to work through a suspension rope assembly.

[0003] In view of the above and existing related technologies, the inventor believes that the following defects often exist: when the speed reducer on the pumping unit is running, the equipment is driven by a transmission shaft. Since most transmission shafts lack a sealing mechanism, the transmission shaft and the belt are exposed to the air during operation, which easily causes problems such as dust and other sundries covering the surface of the belt and the transmission shaft, affecting the use. Therefore, a sealing device for the transmission shaft of a speed reducer of a pumping unit is proposed for the above problems. Summary of the Utility Model

[0004] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background art.

[0005] The technical solution adopted by the utility model to solve its technical problems is as follows: The sealing device for the transmission shaft of a speed reducer of a pumping unit described in the utility model includes a backing plate and a protection device. A driving machine is fixedly connected to the upper surface of the backing plate, and a speed reducer is fixedly connected to the upper surface of the backing plate. Two belts are sleeved on the surfaces of the speed reducer and the driving machine. Two protection devices are arranged on the surface of the backing plate. The protection device includes a support plate. The support plate is located directly above the backing plate. A support rod is fixedly connected to the upper surface of the support plate. A main cover and a sub-cover are slidably connected to the surface of the support rod. The main cover and the sub-cover are sleeved on the surfaces of the speed reducer and the belt. The main cover and the sub-cover slide on the surface of the support rod. The main cover and the sub-cover are sleeved on the surfaces of the speed reducer and the belt. By setting the main cover and the sub-cover, the speed reducer and the belt can be sealed.

[0006] Preferably, a fixing frame is fixedly connected to the upper surface of the support plate. The inner surface of the fixing frame is slidably connected to the surfaces of the main cover and the sub-cover. When the main cover and the sub-cover slide, the main cover and the sub-cover will slide on the inner wall of the fixing frame, and the fixing frame can assist in supporting the main cover and the sub-cover.

[0007] Preferably, two positioning pins are threadedly connected to the inner walls of the fixing frame and the support rod. The two positioning pins are respectively threadedly connected to the inner walls of the main cover and the auxiliary cover. After the main cover and the auxiliary cover are moved to appropriate positions, the positioning pins are rotated to the inner walls of the fixing frame, the main cover, and the support rod, and the positioning pins can limit the positions of the main cover or the auxiliary cover.

[0008] Preferably, connecting plates are fixedly connected to the side walls of the two support plates. Two limit pins are threadedly connected to the inner walls of the connecting plates and the backing plates. After the connecting plates are placed on the surfaces of the backing plates, the limit pins are rotated to the inner walls of the connecting plates and the backing plates, and the limit pins and the connecting plates can limit the positions of the support plates.

[0009] Preferably, sliding holes are formed in the surfaces of the main cover and the auxiliary cover. The inner wall of the sliding hole of the main cover is slidably connected to the surface of the support rod. When the main cover slides, the main cover slides on the surface of the support rod through the sliding hole. By providing the sliding holes, it is convenient for the main cover or the auxiliary cover to slide on the surface of the support rod.

[0010] Preferably, a cleaning device is provided at a position on the side wall of the fixing frame close to the reducer and the belt. The cleaning device includes a connecting frame. The connecting frame is located on the side wall of the fixing frame. A cleaning brush is fixedly connected to the side wall of the connecting frame. The cleaning brush is located on the surface of the belt. Two insertion pins are threadedly connected to the inner walls of the connecting frame and the fixing frame. When the belt moves, the belt moves on the surface of the cleaning brush. By providing the cleaning brush, the belt can be cleaned.

[0011] Preferably, a sealing plate is fixedly connected to the side wall of the cleaning brush. The sealing plate is sleeved on the surface of the belt. The sealing plate is located on the side walls of the main cover and the auxiliary cover. A jack is formed in the surface of the connecting frame close to the insertion pin. The surface of the insertion pin is threadedly connected to the inner wall of the jack of the connecting frame. The sealing plate is sleeved on the surface of the belt and is simultaneously attached to the surfaces of the main cover and the auxiliary cover. By providing the sealing plate, the sealing performance of the main cover and the auxiliary cover can be improved.

[0012] The beneficial effects of the present utility model are as follows:

[0013] 1. When the entire device needs to be used in the present utility model, the support plate is pushed to move the support plate on the surface of the backing plate. The support plate drives the connecting plate to move. After the connecting plate moves to an appropriate position, the limit pin is rotated to the inner walls of the connecting plate and the backing plate. The main cover and the auxiliary cover are pushed. The main cover and the auxiliary cover slide on the surface of the support rod through the sliding holes. The main cover and the auxiliary cover slide on the inner surface of the fixing frame. The main cover and the auxiliary cover are sleeved on the surfaces of the reducer and the belt. Then the positioning pin is rotated to the inner walls of the fixing frame, the support rod, and the main cover or the auxiliary cover. When the belt moves, the belt moves on the inner surface of the main cover and the auxiliary cover. By providing the entire device, the sealing performance of the reducer and the belt can be improved, and the possibility of dust and debris covering the surface of the belt can be reduced.

[0014] 2. After the main cover and the auxiliary cover are installed, push the connecting frame to make the connecting frame fit the fixing frame, and then rotate the pin to the inner walls of the jack of the connecting frame and the fixing frame. When the connecting frame moves, it will drive the cleaning brush to slide. The cleaning brush fits the belt. At the same time, the connecting frame will also drive the sealing plate to move. The sealing plate fits the main cover and the auxiliary cover. By setting the cleaning brush, the belt can be cleaned, and at the same time, the sealing plate can increase the sealing performance of the main cover and the auxiliary cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the speed reducer in the sealing device of the transmission shaft of the pumping unit speed reducer;

[0017] Figure 2 For the sealing device of the transmission shaft of the pumping unit speed reducer Figure 1 Structural schematic diagram of part A;

[0018] Figure 3 It is an exploded structural schematic diagram of the protection device in the sealing device of the transmission shaft of the pumping unit speed reducer;

[0019] Figure 4 It is a side view structural schematic diagram of the speed reducer in the sealing device of the transmission shaft of the pumping unit speed reducer;

[0020] Figure 5 For the sealing device of the transmission shaft of the pumping unit speed reducer Figure 4 Structural schematic diagram of part B.

[0021] In the figure: 1, backing plate; 2, driving machine; 3, speed reducer; 4, belt; 5, protection device; 51, support plate; 52, support rod; 53, main cover; 54, auxiliary cover; 55, positioning pin; 56, fixing frame; 57, connecting plate; 58, limit pin; 59, sliding hole; 6, cleaning device; 61, connecting frame; 62, cleaning brush; 63, pin; 64, sealing plate; 65, jack. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-5 As shown, a sealing device for the transmission shaft of a pumping unit reducer includes a backing plate 1 and a protection device 5. A driving machine 2 is fixedly connected to the upper surface of the backing plate 1, and a speed reducer 3 is fixedly connected to the upper surface of the backing plate 1. Two belts 4 are sleeved on the surfaces of the speed reducer 3 and the driving machine 2. Two protection devices 5 are provided on the surface of the backing plate 1. The protection device 5 includes a support plate 51 which is located directly above the backing plate 1. A support rod 52 is fixedly connected to the upper surface of the support plate 51. A main cover 53 and a sub-cover 54 are slidably connected to the surface of the support rod 52. The main cover 53 and the sub-cover 54 are sleeved on the surfaces of the speed reducer 3 and the belt 4. During operation, the support plate 51 is pushed to move it to a suitable position, and then the main cover 53 and the sub-cover 54 are pushed. The main cover 53 and the sub-cover 54 slide on the surface of the support rod 52, and the main cover 53 and the sub-cover 54 are sleeved on the surfaces of the speed reducer 3 and the belt 4. By providing the main cover 53 and the sub-cover 54, the speed reducer 3 and the belt 4 can be sealed.

[0024] A fixing frame 56 is fixedly connected to the upper surface of the support plate 51. The inner surface of the fixing frame 56 is slidably connected to the surfaces of the main cover 53 and the sub-cover 54. During operation, the main cover 53 and the sub-cover 54 will slide on the inner wall of the fixing frame 56, and the fixing frame 56 can assist in supporting the main cover 53 and the sub-cover 54.

[0025] Two positioning pins 55 are threadedly connected to the inner walls of the fixing frame 56 and the support rod 52. The two positioning pins 55 are respectively threadedly connected to the inner walls of the main cover 53 and the sub-cover 54. During operation, the positioning pins 55 are rotated to the inner walls of the fixing frame 56, the main cover 53 and the support rod 52, and the positioning pins 55 can limit the positions of the main cover 53 or the sub-cover 54.

[0026] Two connecting plates 57 are fixedly connected to the side walls of the two support plates 51. Two limit pins 58 are threadedly connected between the connecting plates 57 and the inner wall of the backing plate 1. During operation, the limit pins 58 are rotated to the inner walls of the connecting plates 57 and the backing plate 1, and the limit pins 58 and the connecting plates 57 can limit the position of the support plate 51.

[0027] The surfaces of the main cover 53 and the auxiliary cover 54 are both provided with sliding holes 59, and the inner wall of the sliding hole 59 of the main cover 53 is slidably connected to the surface of the support rod 52; during operation, the main cover 53 slides on the surface of the support rod 52 through the sliding hole 59, and by providing the sliding hole 59, it is convenient for the main cover 53 or the auxiliary cover 54 to slide on the surface of the support rod 52.

[0028] A cleaning device 6 is provided on the side wall of the fixing frame 56 near the speed reducer 3 and the belt 4. The cleaning device 6 includes a connecting frame 61. The connecting frame 61 is located on the side wall of the fixing frame 56. A cleaning brush 62 is fixedly connected to the side wall of the connecting frame 61. The cleaning brush 62 is located on the surface of the belt 4. Two pins 63 are threadedly connected between the connecting frame 61 and the inner wall of the fixing frame 56; during operation, the connecting frame 61 is attached to the fixing frame 56, and at the same time, the cleaning brush 62 is sleeved on the surface of the belt 4, and then the pins 63 are rotated into the inner walls of the connecting frame 61 and the fixing frame 56. When the belt 4 moves, the belt 4 moves on the surface of the cleaning brush 62. By providing the cleaning brush 62, the belt 4 can be cleaned.

[0029] A sealing plate 64 is fixedly connected to the side wall of the cleaning brush 62. The sealing plate 64 is sleeved on the surface of the belt 4. The sealing plate 64 is located on the side walls of the main cover 53 and the auxiliary cover 54. A jack 65 is provided on the surface of the connecting frame 61 near the pin 63. The surface of the pin 63 is threadedly connected to the inner wall of the jack 65 of the connecting frame 61; during operation, the pin 63 is rotated into the inner wall of the jack 65 of the connecting frame 61 and the inner wall of the fixing frame 56. When the cleaning brush 62 moves, the cleaning brush 62 drives the sealing plate 64 to move. The sealing plate 64 is sleeved on the surface of the belt 4 and at the same time fits on the surfaces of the main cover 53 and the auxiliary cover 54. By providing the sealing plate 64, the sealing performance of the main cover 53 and the auxiliary cover 54 can be improved.

[0030] Working principle: When the entire device needs to be used, push the support plate 51 to make the support plate 51 move on the surface of the backing plate 1. The support plate 51 drives the connecting plate 57 to move. After the connecting plate 57 moves to a suitable position, rotate the limit pin 58 to the inner walls of the connecting plate 57 and the backing plate 1, and then push the main cover 53 and the auxiliary cover 54. The main cover 53 and the auxiliary cover 54 slide on the surface of the support rod 52 through the sliding holes 59. The main cover 53 and the auxiliary cover 54 will slide on the inner surface of the fixing frame 56. The main cover 53 and the auxiliary cover 54 are sleeved on the surface of the speed reducer 3 and the belt 4. Then rotate the positioning pin 55 to the inner walls of the fixing frame 56, the support rod 52 and the main cover 53 or the auxiliary cover 54. When the belt 4 moves, the belt 4 moves on the inner surfaces of the main cover 53 and the auxiliary cover 54. By setting up the whole device, the sealing performance of the speed reducer 3 and the belt 4 can be improved, and the possibility of dust and sundries covering the surface of the belt 4 can be reduced; after the main cover 53 and the auxiliary cover 54 are installed, push the connecting frame 61 to make the connecting frame 61 fit the fixing frame 56, and then rotate the plug pin 63 to the inner walls of the jack 65 of the connecting frame 61 and the inner wall of the fixing frame 56. When the connecting frame 61 moves, it will drive the cleaning brush 62 to slide. The cleaning brush 62 fits the belt 4. At the same time, the connecting frame 61 will also drive the sealing plate 64 to move. The sealing plate 64 fits the main cover 53 and the auxiliary cover 54. By setting up the cleaning brush 62, the belt 4 can be cleaned, and at the same time, the sealing plate 64 can improve the sealing performance of the main cover 53 and the auxiliary cover 54.

[0031] In the description of this specification, the descriptions referring to the terms "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and all these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A sealing device for a transmission shaft of a pumping unit reducer, comprising a backing plate (1) and a protective device (5), wherein a driving machine (2) is fixedly connected to the upper surface of the backing plate (1), a reducer (3) is fixedly connected to the upper surface of the backing plate (1), and two belts (4) are sleeved on the surfaces of the reducer (3) and the driving machine (2); the characteristics are as follows: The surface of the pad (1) is provided with two protective devices (5), the protective devices (5) comprising a support plate (51), the support plate (51) being located directly above the pad (1), the upper surface of the support plate (51) being fixedly connected to a support rod (52), the surface of the support rod (52) being slidably connected to a main cover (53) and a sub-cover (54), the main cover (53) and the sub-cover (54) being sleeved on the surface of the reducer (3) and the belt (4).

2. The oil pumping unit reducer transmission shaft sealing device according to claim 1, characterized in that: The upper surface of the support plate (51) is fixedly connected to a fixing frame (56), and the inner surface of the fixing frame (56) is slidably connected to the surfaces of the main cover (53) and the auxiliary cover (54).

3. The oil pumping unit reducer transmission shaft sealing device according to claim 2, characterized in that: The inner walls of the fixing frame (56) and the support rod (52) are threadedly connected with two positioning pins (55), and the two positioning pins (55) are threadedly connected with the inner walls of the main cover (53) and the auxiliary cover (54) respectively.

4. The oil pumping unit reducer transmission shaft sealing device according to claim 1, characterized in that: The side walls of the two support plates (51) are fixedly connected with a connecting plate (57), and the inner wall of the connecting plate (57) and the backing plate (1) are threadedly connected with two limiting pins (58).

5. The oil pumping unit reducer transmission shaft sealing device according to claim 1, characterized in that: The surfaces of the main cover (53) and the auxiliary cover (54) are both provided with sliding holes (59), and the inner wall of the sliding hole (59) of the main cover (53) is slidably connected to the surface of the support rod (52).

6. The oil pumping unit reducer transmission shaft sealing device according to claim 2, characterized in that: A cleaning device (6) is provided on the side wall of the fixed frame (56) near the reducer (3) and the belt (4), and the cleaning device (6) comprises a connecting frame (61), the connecting frame (61) is located on the side wall of the fixed frame (56), a cleaning brush (62) is fixedly connected to the side wall of the connecting frame (61), and the cleaning brush (62) is located on the surface of the belt (4), and the inner wall of the connecting frame (61) and the fixed frame (56) are threadedly connected with two latches (63).

7. The sealing device for the transmission shaft of the oil pumping unit reducer according to claim 6, characterized in that: The side wall of the cleaning brush (62) is fixedly connected with a sealing plate (64), the sealing plate (64) is sleeved on the surface of the belt (4), the sealing plate (64) is located on the side walls of the main cover (53) and the auxiliary cover (54), the surface of the connecting frame (61) is provided with a plug hole (65) near the plug pin (63), and the surface of the plug pin (63) and the inner wall of the plug hole (65) of the connecting frame (61) are threadedly connected.

Images