Belt protective cover of oil pumping unit

Abstract

The invention relates to a safety protection device for pumping well production, in particular to a pumping unit belt protection cover. The pumping unit belt protective cover comprises an upper outer cover, a middle outer cover and a lower outer cover, at least one of the upper outer cover and the lower outer cover is a movable outer cover, the movable outer cover is hinged to the middle outer cover, the movable outer cover is connected with a driving mechanism, the driving mechanism comprises a handle and a pulling piece rotationally assembled with the movable outer cover, and the pulling piece is connected with the handle. The handle and the pulling piece are in transmission connection so that when the handle is rotated, the pulling piece can be driven to drive the movable outer cover to turn over, and the movable outer cover can be opened or closed. By arranging the handle in the driving mechanism connected with the movable outer cover, a worker only needs to rotate the handle, and then the handle is rotationally matched with the pulling piece assembled on the movable part of the protective cover through the driving mechanism, so that the movable outer cover is opened or closed when the movable part of the protective cover rotates the handle.

Description

Technical Field

[0001] The present invention relates to a safety protection device for the production of pumping wells, in particular to a belt protection cover for a pumping unit. Background Art

[0002] The belt used on the pumping unit is exposed outdoors for a long time, resulting in the phenomenon of belt slipping and burning in rainy and snowy weather, and the situation of belt aging, cracking and degumming in hot weather. The pumping unit belt is prone to breakage, reducing the service life of the belt, and it is necessary to stop the well for replacement. In addition, since the belt is in an open state, if the staff performing operations such as inspection and maintenance tasks are slightly negligent, their clothes or even their bodies may be caught in the belt, causing personal injury accidents. Therefore, it is necessary to set up a safety protection device for the pumping unit belt.

[0003] The Chinese patent with the authorization announcement number CN201672237U, which was publicly announced on December 15, 2010, discloses an intelligent safety protection cover for a pumping unit belt, which is composed of a skeleton and an outer cover. The outer cover is divided into three parts: an upper outer cover, a middle outer cover and a lower outer cover. The two ends of the middle outer cover are respectively hinged to the ends of the upper outer cover and the lower outer cover, and the three parts are respectively sleeved on the corresponding skeletons. When in use, the intelligent safety protection cover for the pumping unit belt is sleeved on the pumping unit belt, which can protect the belt from wind, rain and prolong the service life of the belt. When performing maintenance, the upper outer cover or the lower outer cover can be lifted to carry out maintenance, which is convenient for disassembly and assembly and reliable in operation.

[0004] However, when maintaining the above safety protection cover, it is necessary to manually lift the upper outer cover or the lower outer cover hinged to the middle outer cover. During the process of replacing the pumping unit belt, the staff needs to climb onto the speed reducer of the pumping unit and rely on manpower to lift and open the belt protection cover. During this process, due to the small space and high altitude of the operation platform of the speed reducer, it is easy to cause injuries such as bruising, bumping and even slipping when opening the belt protection cover, which poses a great safety hazard. Summary of the Invention

[0005] The purpose of the present invention is to provide a belt protection cover for a pumping unit to solve the problem of potential safety hazards existing in manually lifting the belt protection cover by the staff when maintaining the pumping unit belt in the prior art.

[0006] To solve the above technical problems, the technical solution of the belt protection cover for the pumping unit of the present invention is as follows:

[0007] A belt protection cover for a pumping unit includes an upper outer cover, a middle outer cover and a lower outer cover. At least one of the upper outer cover and the lower outer cover is a movable outer cover. The movable outer cover is hinged to the middle outer cover. The movable outer cover is connected with a driving mechanism. The driving mechanism includes a handle and a pulling member rotatably assembled with the movable outer cover. The handle and the pulling member are in transmission connection so as to drive the pulling member to drive the movable outer cover to flip when the handle is rotated, thereby opening or closing the movable outer cover.

[0008] Preferably, the pulling member includes a rack and pinion mechanism. The handle is fixedly connected to a transmission shaft, the gear is fixedly assembled on the transmission shaft, a mounting seat is rotatably assembled on the transmission shaft, the rack is slidably assembled in the mounting seat, and one end of the rack is hingedly assembled with the movable outer cover.

[0009] Preferably, the rack is connected to the middle position of the movable outer cover.

[0010] Preferably, the mounting seat is U-shaped, the rack is slidably assembled in the U-shaped mounting seat, transmission shaft mounting holes are provided on both side plates of the U-shaped mounting seat, and the U-shaped mounting seat is rotatably assembled on the transmission shaft through the transmission shaft mounting holes.

[0011] Preferably, the rack is U-shaped, and a row of teeth are respectively provided on both side plates of the U-shaped rack along the length direction of the U-shaped rack, and the two rows of parallel teeth are simultaneously engaged with the gear for transmission.

[0012] Preferably, the pumping unit belt protection cover further includes a fixing frame, the driving mechanism is assembled on the fixing frame, and the height of the fixing frame is adjustable.

[0013] Preferably, the fixing frame includes a fixing rod and a movable rod movably sleeved outside the fixing rod. The fixing rod is used for fixedly installing on the pumping unit base, the driving mechanism is assembled on the movable rod, and a locking structure is provided on the movable rod for locking the movable rod on the fixing rod when the movable rod moves to different heights.

[0014] Preferably, a set screw hole is formed in the side wall of the movable rod, and the set screw hole is used for the set screw to pass through and press against the fixing rod, and the set screw and the set screw hole constitute the locking structure.

[0015] Preferably, the driving mechanism is provided with a locking structure for making the movable part located at the open position and the closed position.

[0016] The present invention is an improvement on the prior art, and provides a pumping unit belt protection cover. By setting a handle in the driving mechanism connected to the movable outer cover, the staff only needs to rotate the handle, and the handle is then rotationally matched with the pulling member assembled with the movable part of the protection cover through the driving mechanism, so that the movable part of the protection cover realizes the opening or closing of the movable outer cover when the handle is rotated; for the pumping unit belt protection cover provided by the present invention, only by rotating the handle, the opening or closing of the protection cover can be realized, which can effectively avoid great safety hazards such as bruising, bumping, and even slipping that are likely to occur when the staff directly manually lifts the belt protection cover, and rotating the handle is more time-saving and labor-saving than directly lifting the protection cover, greatly reducing the labor intensity of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of Embodiment 1 of the pumping unit belt protection cover of the present invention;

[0018] Figure 2 is Figure 1 a schematic diagram of the middle transmission structure;

[0019] In the attached drawings: 1. Upper outer cover; 11. Pin shaft; 2. Middle outer cover; 3. Lower outer cover; 4. Fixed frame; 41. Fixed rod; 42. Movable rod; 421. Set screw; 43. Connecting rod; 431. Connecting rod nut; 5. Handle; 6. Rack and pinion mechanism; 61. Transmission shaft; 62. Gear; 63. U-shaped mounting seat; 64. Rack. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the attached drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] The technical concept of the belt protection cover of the pumping unit provided by the present invention is as follows:

[0022] A belt protection cover of a pumping unit includes an upper outer cover, a middle outer cover and a lower outer cover. At least one of the upper outer cover and the lower outer cover is a movable outer cover. The movable outer cover is hinged to the middle outer cover. The movable outer cover is connected with a driving mechanism. The driving mechanism includes a handle and a pulling member rotatably assembled with the movable outer cover. The handle and the pulling member are in transmission connection so as to drive the pulling member to drive the movable outer cover to flip when the handle is rotated, thereby opening or closing the movable outer cover.

[0023] In the present invention, only by rotating the handle, and the handle is then rotationally matched with the pulling member assembled with the movable part of the protection cover through the driving mechanism, the opening and protection of the protection cover can be realized, so that the movable part of the protection cover can open or close the movable outer cover when the staff rotates the handle. Compared with the prior art in which the staff directly manually lifts the protection cover, it effectively avoids the great safety hazards such as bruising, bumping, and even slipping that are likely to occur when the staff directly manually lifts the belt protection cover. Moreover, rotating the handle is more time-saving and labor-saving than directly lifting the protection cover, greatly reducing the labor intensity of the staff.

[0024] Specific embodiments of the belt protection cover of the pumping unit of the present invention:

[0025] Embodiment 1

[0026] The belt protection cover of the pumping unit provided in this embodiment, as Figure 1-2As shown, it includes an upper outer cover 1, a middle outer cover 2 and a lower outer cover 3, at least one of the upper outer cover 1 and the lower outer cover 3 is a movable outer cover, the movable outer cover is hinged to the middle outer cover 2, and the movable outer cover is connected to a driving mechanism, the driving mechanism includes a handle 5 and a pulling member rotatably assembled with the movable outer cover, the handle 5 and the pulling member are transmission-connected so that when the handle 5 is rotated, the pulling member is driven to flip the movable outer cover to open or close the movable outer cover.

[0027] The driving mechanism can be a reversing transmission mechanism. For example, the pulling member is a top screw hinged on the movable part, and a matching nut is installed on the top screw. The pulling member includes a reversing structure, one end of the reversing structure is used to assemble the handle 5, and the other end is used to assemble the nut, so that the rotational torque of the handle 5 is converted into the rotational torque of the nut rotating along the top screw, so that when the nut rotates, the top screw moves relative to the nut, driving the movable part to flip, thereby realizing the opening and closing of the movable part.

[0028] However, the above-mentioned reversing transmission structure needs to do more work to open the movable part, which increases the labor intensity of the staff. Therefore, the driving mechanism is preferably a same-direction transmission structure.

[0029] It can be understood that when the driving mechanism is preferably a co-directional transmission structure, the pulling member can be flexible or rigid. When the pulling member is a flexible pulling member, the pulling member can be a rope, a belt or other items that can be curled. One end of the above-mentioned flexible pulling member is connected to the movable part of the protective cover, and the handle 5 and the other end of the flexible connecting member are transmission connected. For example, the handle 5 is equipped with a transmission shaft 61, and the flexible connecting member is curled and wrapped around the transmission shaft 61. The rotation of the rotating handle 5 drives the transmission shaft 61 to rotate, so that the flexible pulling member is wrapped around the transmission shaft 61, thereby driving the movable part to flip, thereby realizing the opening and closing of the movable part.

[0030] When the pulling member is a flexible pulling member, it is easy for the uncurled part to hang on the lower side of the transmission structure due to its weight, and it is easy to be involved in the belt, causing the transmission structure to fail or even damage the protective cover structure. Therefore, preferably, the pulling member includes a gear rack mechanism 6, the handle 5 is fixedly connected to the transmission shaft 61, the gear 62 is fixedly assembled on the transmission shaft 61, and the transmission shaft 61 is also rotatably assembled with a mounting seat, the rack 64 is slidably assembled in the mounting seat, and one end of the rack 64 is hingedly assembled with the movable outer cover. The opening and closing of the movable part is achieved through the transmission cooperation of the gear 62 and the rack 64, which can effectively avoid the transmission structure failure and protective cover damage that are easily caused by the use of flexible transmission members. At this time, the upper outer cover 1 and / or the lower periphery 2 constitute the movable outer cover, and the movable outer cover is hinged with the middle outer cover through the pin 11.

[0031] Of course, the rack 64 can be connected to the front end of the movable outer cover or the rear end of the movable outer cover. However, when connected to the front end or the rear end of the movable outer cover, the pulling member is likely to bear a greater moment due to the center of gravity shift. Therefore, preferably, the rack 64 is connected to the middle position of the movable outer cover.

[0032] To simplify the structure of the mounting seat, the mounting seat is a U-shaped mounting seat 63. The rack 64 is slidably assembled in the U-shaped mounting seat 63. The two side plates of the U-shaped mounting seat 63 are provided with mounting holes for the transmission shaft 61. The U-shaped mounting seat 63 is rotatably assembled on the transmission shaft 61 through the mounting holes for the transmission shaft 61.

[0033] The rack 64 can be provided with a row of teeth adapted to drive the gear 62. When provided with a row of teeth, it is easy for the gear 62 and the rack 64 to be offset during cooperation, affecting the transmission effect. Preferably, the rack 64 is U-shaped. On the two side plates of the U-shaped rack 64, a row of teeth is respectively provided along the length direction of the U-shaped rack 64. The two rows of parallel teeth are simultaneously engaged with the gear 62 for transmission.

[0034] For some structural parts not introduced in detail in this embodiment, they can be the same as those introduced in other embodiments in this article.

[0035] Embodiment 2

[0036] The pumping unit belt protection cover provided in this embodiment, referring to Figure 1-2 the shown structure, includes an upper outer cover 1, a middle outer cover 2, and a lower outer cover 3. At least one of the upper outer cover 1 and the lower outer cover 3 is a movable outer cover. The movable outer cover is hinged to the middle outer cover 2. The movable outer cover is connected with a driving mechanism. The driving mechanism includes a handle 5 and a pulling member rotatably assembled with the movable outer cover. The handle 5 and the pulling member are in transmission connection so that when the handle 5 is rotated, the pulling member drives the movable outer cover to flip and open or close the movable outer cover.

[0037] The driving mechanism can be fixedly installed. However, since the movable parts of the protection cover are at different heights, it is not easy to control the length of the pulling member in the driving structure when the driving mechanism cooperates with the movable parts for pulling. Therefore, preferably, the pumping unit belt protection cover further includes a fixing frame 4. The driving mechanism is assembled on the fixing frame 4, and the height of the fixing frame 4 is adjustable. By adjusting the height of the fixing frame 4, the height of the driving structure can be adjusted, and thus the movable parts at different heights can be adapted.

[0038] In order to further simplify the structure of the fixed frame 4, preferably, the fixed frame 4 includes a fixed rod 41 and a movable rod 42 movably mounted on the outside of the fixed rod 41, the fixed rod 41 is used to be fixedly installed on the oil pump base, the driving mechanism is assembled on the movable rod 42, and the movable rod 42 is provided with a locking structure for locking the movable rod 42 on the fixed rod 41 when the movable rod 42 moves to different heights.

[0039] The fixing rod 42 is provided with a connecting rod 43 near the protective cover. The protective cover is provided with a connecting ring for the connecting rod 43 to pass through. Connecting rod nuts 431 are assembled at both ends of the connecting rod 43 for locking, so as to achieve fixed installation of the protective cover and the fixing frame 4.

[0040] Of course, the movable rod 42 and the fixed rod 41 can be slidably assembled using a pin shaft. For example, the movable rod 42 is sleeved on the fixed rod 41. The fixed rod 41 is provided with continuous pin holes along the length direction. The movable rod 42 is provided with pin holes that match the pin holes. The movable rod 42 can be installed at different positions by passing the pin shaft of the movable rod 42 through the pin holes at different positions on the fixed rod 41. The pin shaft and pin holes constitute the locking structure.

[0041] When the above-mentioned pin shaft is used, the problem of unstable assembly of the fixed rod 41 and the movable rod 42 is easy to occur. Preferably, the side wall of the movable rod 42 is provided with a top screw hole, and the top screw hole is used to allow the top screw 421 to pass through and tighten the fixed rod 41. The top screw 421 and the top screw hole constitute the locking structure. The fixed rod and the movable rod 42 can be locked by the top screw 421, and the fixed rod 41 and the movable rod 42 can be locked at different positions of the fixed rod to realize the movable cooperation, thereby adjusting the height of the movable rod 42.

[0042] Other partial structures not described in detail in this embodiment may be the same as the structures described in other embodiments in this document.

[0043] Example 3

[0044] The pumping unit belt protection cover provided in this embodiment refers to Figure 1-2 The structure shown includes an upper outer cover 1, a middle outer cover 2 and a lower outer cover 3. At least one of the upper outer cover 1 and the lower outer cover 3 is a movable outer cover, which is hinged to the middle outer cover 2. The movable outer cover is connected to a driving mechanism, which includes a handle 5 and a pulling member rotatably assembled with the movable outer cover. The handle 5 and the pulling member are transmission-connected so that when the handle 5 is rotated, the pulling member drives the movable outer cover to flip and open or close the movable outer cover.

[0045] When the movable part is flipped or closed, a locking structure for positioning the movable part at a specific position can be provided to facilitate viewing of the belt. Preferably, the drive mechanism is provided with a locking structure for positioning the movable part at the open position and the closed position.

[0046] It can be understood that the locking structure can be arranged at different positions of the drive structure. For example, the handle 5 is fixedly connected to a transmission shaft 61. The fixing bracket 4 includes a fixing rod 41 and a movable rod 42 movably sleeved outside the fixing rod 41. The fixing rod 41 is provided with a through hole for the transmission shaft 61 to pass through and enable the transmission shaft 61 to rotate. A continuous pin hole is provided along the circumference of the part of the transmission shaft 61 located at the through hole position. The fixing rod 41 is provided with a pin hole adapted to the pin hole. The movable part is positioned at the open position and the closed position by a pin passing through the pin holes. The cooperation between the pin and the pin holes constitutes the locking structure.

[0047] The locking structure can also be arranged at other positions of the drive mechanism. For example, the drive structure includes the gear-rack mechanism 6 described in Embodiment 1. Continuous pin holes are provided along the length direction on the side surface of the rack 64. The rotating member 63 is provided with pin holes adapted to the pin holes of the rack 64. The movable part is positioned at the open position and the closed position by a pin passing through the pin holes at different positions.

[0048] For other partial structures not introduced in detail in this embodiment, they can be the same as the structures introduced in other embodiments in this article.

Claims

1. An oil pumping unit belt protection cover, comprising an upper outer cover, a middle outer cover and a lower outer cover, at least one of the upper outer cover and the lower outer cover being a movable outer cover, the movable outer cover being hinged to the middle outer cover, characterized in that, The movable outer cover is connected with a driving mechanism, which includes a handle and a pulling member rotatably assembled with the movable outer cover. The handle and the pulling member are in transmission connection so that when the handle is rotated, the pulling member drives the movable outer cover to turn over to open or close the movable outer cover.

2. The oil pumping unit belt protection cover according to claim 1, characterized in that, The pulling member includes a gear-rack mechanism. The handle is fixedly connected with a transmission shaft, the gear is fixedly assembled on the transmission shaft, a mounting seat is also rotatably assembled on the transmission shaft, the rack is slidably assembled in the mounting seat, and one end of the rack is hingedly assembled with the movable outer cover.

3. The oil pumping unit belt protection cover according to claim 2, characterized in that, The rack is connected to the middle position of the movable outer cover.

4. The oil pumping unit belt protection cover according to claim 2, characterized in that, The mounting seat is U-shaped, the rack is slidably assembled in the U-shaped mounting seat, and transmission shaft mounting holes are provided on both side plates of the U-shaped mounting seat. The U-shaped mounting seat is rotatably assembled on the transmission shaft through the transmission shaft mounting holes.

5. The oil pumping unit belt protection cover according to claim 4, characterized in that, The rack is U-shaped, and a row of teeth is provided on each of the two side plates of the U-shaped rack along the length direction of the U-shaped rack. The two rows of parallel teeth are simultaneously engaged with the gear for transmission.

6. The oil pumping unit belt protection cover according to any one of claims 1-5, characterized in that, The belt protection cover of the pumping unit further includes a fixing frame, the driving mechanism is assembled on the fixing frame, and the height of the fixing frame is adjustable.

7. The oil pumping unit belt protection cover according to claim 6, characterized in that, The fixing frame includes a fixing rod and a movable rod movably sleeved outside the fixing rod. The fixing rod is used for being fixedly installed on the pumping unit base, the driving mechanism is assembled on the movable rod, and a locking structure is provided on the movable rod for locking the movable rod on the fixing rod when the movable rod moves to different heights.

8. The oil pumping unit belt protection cover according to claim 7, characterized in that, A set screw hole is formed in the side wall of the movable rod, and the set screw hole is used for allowing a set screw to pass through and tighten the fixing rod. The set screw and the set screw hole constitute the locking structure.

9. The oil pumping unit belt protection cover according to any one of claims 1-5, characterized in that, The driving mechanism is provided with a locking structure for making the movable part located at the open position and the closed position.

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