A space expansion auxiliary device for adjusting balance block of pumping unit

Abstract

The utility model discloses a kind of space expansion auxiliary devices of pumping unit adjusting balancing block, it is related to pumping unit technical field, including support docking platform assembly, the support docking platform assembly is positioned and is set in the upper end of pumping unit crank, foldable double-leg stretching component is movably connected with the both sides of support docking platform assembly, by the synergies of foldable double-leg stretching component and bottom foldable support assembly, stable operation platform is constructed in pumping unit crank narrow area, make operator's legs natural stretching stand, completely solve the power difficulty and falling risk caused by traditional operation in legs together, folding structure is convenient for storage and transportation simultaneously, so that space expansion and safety support double guarantee.Shoe size self-adapting adjustment assembly is automatically adapted to different size work shoes by the reset expansion spring and track slide bar of elastic expansion mechanism cooperation, in combination with the quick fixing of velcro of shoe body limiting unit, realize the efficient operation of " one foot steps into and is locked".

Description

Technical Field

[0001] This utility model relates to the field of oil pumping unit technology, and specifically to a space expansion auxiliary device for adjusting the balance block of an oil pumping unit. Background Technology

[0002] During operation, the asymmetry of loads in the upper and lower strokes of an oil pumping unit can cause fluctuations in motor current, which can easily lead to equipment damage over time. Therefore, oil pumping units are generally equipped with counterweights, whose positions are periodically adjusted to achieve load balance. Traditional adjustment methods rely on manual tightening and loosening using a sledgehammer to strike the counterweight bolts, posing significant safety hazards: operators must stand in a narrow crank area, their legs are forced together, making it difficult to exert force, and the lack of a stable support surface greatly increases the risk of falls due to imbalance.

[0003] In the prior art, such as the oil pumping unit balance block moving device disclosed in patent CN105697345B, although the balance block displacement can be driven through the rack and pinion meshing structure, it has the following inherent defects: Functional limitations: The existing device only solves the problem of mechanical displacement of the balance block, and does not address the safety positioning requirements of the operator. When adjusting the bolts, personnel still need to work in the danger zone. Space occupancy conflict: The existing device has its mounting base and pushing structure installed in the crank slide, which further compresses the operating space and exacerbates the difficulty for personnel to stand up; Human factors are lacking: The existing device is not designed with any components to help people stand stably, and operators still face the risk of limited strength and falling.

[0004] Therefore, there is an urgent need for those skilled in the art to design a new type of space expansion device. Utility Model Content

[0005] The problem this utility model aims to solve is a space expansion auxiliary device for adjusting the balance block of an oil pumping unit, which combines the function of adjusting the balance block with the guarantee of operational safety, fundamentally solving the technical problem of personnel standing stably and exerting force safely in a confined space.

[0006] To address the aforementioned problems, this utility model provides a space expansion auxiliary device for adjusting the balance block of an oil pumping unit, including a support docking platform assembly. The support docking platform assembly is positioned and sleeved on the upper end of the crank of the oil pumping unit. Foldable double leg extension components are movably connected to both sides of the support docking platform assembly. The inner end of the foldable double leg extension component is provided with a shoe size adaptive adjustment component, which cooperates with the operator's foot. A foldable support component is fixedly provided at the bottom of the foldable double leg extension component, and the foldable support component is disposed on and fits against the side end of the crank of the oil pumping unit.

[0007] Preferably, the support docking platform assembly includes a support platform plate, which is disposed at the upper end of the groove of the pumping unit crank. The support platform plate has symmetrical clearance holes. A positioning screw passes through the clearance holes from the lower end of the support platform plate and extends upwards, and is locked by a limiting lock nut. A positioning block is fixedly connected to the lower end of the positioning screw. The positioning block is engaged in the groove of the pumping unit crank. The positioning block is embedded in the groove of the crank to form a three-dimensional limit, which further improves the anti-torsion ability and solves the problem of easy overturning of traditional supports.

[0008] Preferably, the foldable double-leg extension component includes a pivot hinge, one end of which is connected to the support platform plate, and the other end is movably connected to the shoe body receiving cavity. An observation port is provided at the center of the shoe body receiving cavity, and a reinforcing rib assembly is welded onto the observation port.

[0009] Preferably, the shoe size adaptive adjustment component includes an adaptive adjustment unit disposed at the rear end of the inner edge of the shoe body accommodating cavity and a shoe body limiting unit disposed at the front end of the inner edge. The adaptive adjustment unit elastically expands and contracts to adapt to various shoe body sizes, the shoe body limiting unit restricts the movement of the shoe from the front end, and the shoe size adaptive adjustment component automatically compensates for the difference in heel length.

[0010] Preferably, the adaptive adjustment unit includes a track slide rod, which is connected to the upper and lower ends of the shoe body accommodating cavity. A reset telescopic spring is sleeved on the lower end of the track slide rod. One end of the reset telescopic spring is connected to the bottom end of the shoe body accommodating cavity, and the end of the reset telescopic spring away from the bottom end of the shoe body accommodating cavity is connected to the heel support plate. The heel support plate is sleeved on the track slide rod and has a U-shaped structure. The heel drives the heel support plate to slide up and down, thereby stretching the reset telescopic spring. The U-shaped elastic structure of the heel support plate, combined with the reset telescopic spring, enables the device to adapt to the user rather than the user adapting to the device, greatly reducing operator fatigue.

[0011] Preferably, the shoe body limiting unit includes limiting rings, which are fixedly disposed on both sides of the front end of the shoe body receiving cavity. The hook and loop fastener passes through the two limiting rings in sequence and is bonded to the hook surface and the loop surface to achieve quick wearing.

[0012] Preferably, the foldable support assembly has a foldable triangular support structure, including a support positioning plate. The side end of the support positioning plate is attached to the side end of the pumping unit crank. A first connecting rod is movably hinged to the upper end of the support positioning plate. The other ends of the support positioning plate and the first connecting rod are respectively movably hinged to a second connecting rod. The side end of the support positioning plate attached to the pumping unit crank serves to provide support and fixation. At the same time, the double-link hinge structure of the foldable support assembly forms a failure protection.

[0013] Preferably, the foldable double-leg extension component is provided with a grip handle on its side for easy carrying and to provide an emergency grip fulcrum for use with the platform.

[0014] Compared with the prior art, the present invention achieves the following beneficial technical effects: This utility model utilizes the synergistic effect of a foldable double-leg extension component and a bottom foldable support assembly to construct a stable working platform in the narrow area of ​​the pumping unit crank, allowing the operator to stand with their legs naturally extended. This completely solves the difficulty of exerting force and the risk of falling caused by keeping the legs together in traditional operations. At the same time, the foldable structure facilitates storage and transportation, providing both space expansion and safety support.

[0015] This utility model of shoe size adaptive adjustment component automatically adapts to different sizes of work shoes through the cooperation of the reset telescopic spring of the elastic telescopic mechanism and the track slide rod. Combined with the hook and loop fastener of the shoe body limiting unit for quick fixation, it achieves efficient operation of "locking as soon as you step in", avoiding the defects of traditional foot pedals that require repeated adjustment.

[0016] This utility model's support docking platform assembly adopts a snap-fit ​​structure between the positioning block and the crank groove, and is locked in both directions with the limit lock nut, which overcomes the slippage problem caused by oil contamination in the existing rack and pinion meshing structure, ensuring zero displacement of the platform during operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the space expansion auxiliary device for adjusting the balance block of the oil pumping unit according to this utility model.

[0018] Figure 2 This is a schematic diagram of the unfolded structure of the space expansion auxiliary device for adjusting the balance block of the oil pumping unit according to this utility model.

[0019] Figure 3 This is a schematic diagram of the folded structure of the space expansion auxiliary device for adjusting the balance block of the oil pumping unit according to this utility model.

[0020] Figure 4 A schematic diagram of a structure for installing a shoe size adaptive adjustment component on a foldable double-leg extension component.

[0021] In the diagram: 1 - Support docking platform assembly, 101 - Support platform plate, 102 - Clearance hole, 103 - Positioning screw, 104 - Limit lock nut, 105 - Positioning block, 2 - Pumping unit crank, 3 - Foldable double leg extension component, 301 - Rotary hinge, 302 - Shoe body receiving cavity, 303 - Observation port, 304 - Reinforcing rib assembly, 4 - Shoe size adaptive adjustment assembly, 400 - Adaptive adjustment unit, 401 - Track slide bar, 402 - Reset telescopic spring, 403 - Heel support plate, 410 - Shoe body limiting unit, 411 - Limiting ring, 412 - Hook and loop fastener, 5 - Foldable support assembly, 501 - Support positioning plate, 502 - First connecting rod, 503 - Second connecting rod, 6 - Grip handle, 7 - Counterweight block. Detailed Implementation

[0022] The present invention will be further explained below with reference to the accompanying drawings and embodiments.

[0023] See Figure 1-4 As shown, the space expansion auxiliary device for adjusting the balance block of the pumping unit in this embodiment includes a support docking platform assembly 1. The support docking platform assembly 1 is positioned and sleeved on the upper end of the pumping unit crank 2. Foldable double leg extension components 3 are movably connected to both sides of the support docking platform assembly 1. The inner end of the foldable double leg extension component 3 is provided with a shoe size adaptive adjustment component 4. The operator's foot extends into the shoe size adaptive adjustment component 4, and the adaptive adjustment component 4 elastically expands and contracts to adapt to different shoe sizes. A foldable support component 5 is fixedly provided at the bottom of the foldable double leg extension component 3. The foldable support component 5 is disposed on the side end of the pumping unit crank 2 and fits against it.

[0024] The support docking platform assembly 1 includes a support platform plate 101, which is a steel platform plate. The support platform plate 101 is located at the upper end of the groove of the pumping unit crank 2, and its shape matches the upper curved surface of the pumping unit crank 2. The support platform plate 101 has symmetrical clearance holes 102. The positioning screw 103 passes through the clearance holes 102 from the lower end of the support platform plate 101 and extends upwards to be locked by the limiting lock nut 104. The lower end of the positioning screw 103 is fixedly connected to a positioning block 105. The positioning block 105 is engaged in the groove of the pumping unit crank 2. The positioning screw 103 and the positioning block 105 are engaged in the groove of the crank and are secured in both directions by the limiting lock nut 104 to ensure that there is no relative slippage between the platform plate 101 and the crank 2.

[0025] The foldable leg extension component 3 includes a pivot hinge 301 and symmetrical shoe body accommodating cavities 302. One end of the pivot hinge 301 is riveted to both ends of the platform plate 101, and the other end is movably folded and connected to the shoe body accommodating cavity 302. When freely unfolded, it forms a support angle of approximately 45° with the platform. An observation port 303 is provided at the center of the shoe body accommodating cavity 302, and a reinforcing rib assembly 304 is welded to the observation port 303.

[0026] The foldable double leg extension component 3 has a grip handle 6 fixed on the side. The ergonomic design makes it comfortable to hold and easy to carry. It can also be used as an operation or emergency grip fulcrum in the folded or unfolded state, and can be used in conjunction with the platform.

[0027] The shoe size adaptive adjustment component 4 includes an adaptive adjustment unit 400 disposed at the rear end of the inner edge of the shoe body accommodating cavity 302 and a shoe body limiting unit 410 disposed at the front end of the inner edge. The adaptive adjustment unit 400 elastically expands and contracts to adapt to various shoe body sizes, and the shoe body limiting unit 410 restricts the movement of the shoe from the front end. The shoe size adaptive adjustment component 4 automatically compensates for the difference in heel length.

[0028] The adaptive adjustment unit 400 includes a track slide rod 401, which is connected to the upper and lower ends of the shoe body accommodating cavity 302. A reset telescopic spring 402 is sleeved on the lower end of the track slide rod 401. One end of the reset telescopic spring 402 is connected to the bottom end of the shoe body accommodating cavity 302, and the end of the reset telescopic spring 402 away from the bottom end of the shoe body accommodating cavity 302 is connected to the heel support plate 403. The heel support plate 403 is sleeved on the track slide rod 401 and has a U-shaped structure. The heel drives the heel support plate 403 to slide up and down, thereby stretching the reset telescopic spring 402. The U-shaped elastic structure of the heel support plate 403, combined with the reset telescopic spring 402, enables the device to adapt to the user rather than the user to adapt to the device, greatly reducing operator fatigue.

[0029] The shoe body limiting unit 410 includes limiting rings 411, which are fixedly disposed on both sides of the front end of the shoe body receiving cavity 302. The hook and loop fastener 412 passes through the two limiting rings 411 in sequence and is bonded to the hook side and the loop side. The limiting rings 411 and the hook and loop fastener 412 work together to fix the shoe upper, enabling quick wearing.

[0030] The foldable support assembly 5 has a foldable triangular support structure, including a support positioning plate 501. The side end of the support positioning plate 501 is attached to the side end of the pumping unit crank 2. The upper end of the support positioning plate 501 is movably hinged to a first connecting rod 502. The other ends of the support positioning plate 501 and the first connecting rod 502 are respectively movably hinged to a second connecting rod 503. The attachment of the support positioning plate 501 to the side end of the pumping unit crank 2 plays a supporting and fixing role. At the same time, the double connecting rod hinge structure of the foldable support assembly 5 forms a failure protection.

[0031] The foldable support assembly 5 has a foldable triangular support structure. The upper end of the support positioning plate 501 is movably hinged to the first connecting rod 502. The other ends of the support positioning plate 501 and the first connecting rod 502 are respectively movably hinged to the second connecting rod 503. The triangular support structure is formed by the support positioning plate 501, the first connecting rod 502, and the second connecting rod 503. When the support is unfolded, the support positioning plate 501 fits against the side of the pumping unit crank 2 to provide support and fixation, thereby forming a rigid triangular support and improving the stability of the whole machine.

[0032] It should be noted that the foldable support component 5 may adopt the foldable telescopic hinge disclosed in the specification and figure 5 of the prior art CN218588520U.

[0033] To facilitate understanding of the above technical solutions of this utility model, the following detailed description of the above technical solutions of this utility model is provided through specific usage methods.

[0034] The specific working process is as follows: First, the support platform plate 101 of the support docking platform assembly 1 is fitted onto the upper end of the pumping unit crank 2. After adjusting the positioning screw 103 until the positioning block 105 is tightly attached to and embedded in the groove of the pumping unit crank 2, it is locked by the limit lock nut 104, so that the positioning block 105 and the side wall of the groove form a mechanical self-lock; then, the handle 6 is held and pulled outward, and the pivot hinge 301 is rotated to a horizontal state, so that the foldable double leg extension component 3 is unfolded outward from both sides of the support platform plate 101. Then, the foldable support assembly 5 is unfolded, and the support positioning plate 501 is flipped downward, so that the first connecting rod 502 and the second connecting rod 503 form an inverted V-shaped support structure. At this time, the support positioning plate 501 is tightly attached to the side wall of the crank 2 to form an anti-tilting triangular support; then, the operator steps into the shoe body receiving cavity 30. 2. The heel naturally presses against the heel support plate 403 of the adaptive adjustment unit 400 and stretches the return spring 402, forcing the return spring 402 to compress and drive the heel support plate to slide up and down, achieving a fit with the sole. Then, the hook and loop fastener 412 is passed through the limiting ring 411 and tightened by the shoe body limiting unit 410 to fix the forefoot. The foot position is confirmed through the observation port 303. The reinforcing rib assembly 304 prevents the cavity from deforming. The operator's legs are naturally separated, and the center of gravity is on the shoe body receiving cavity 302, so the balance block adjustment can be safely carried out. The balance block 7 bolts are tapped to tighten or loosen. After the operation is completed, the hook and loop fastener 412 is removed, the foot is removed from the shoe body receiving cavity 302, the foldable double leg extension component 3 is folded upward to the vertical folded state, and then the foldable support component 5 is pressed to fold it up, completing the folding.

[0035] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features of the present invention.

Claims

1. A space expansion auxiliary device for adjusting the balance block of an oil pumping unit, characterized in that, The system includes a support docking platform assembly (1), which is positioned and sleeved on the upper end of the pumping unit crank (2). The two sides of the support docking platform assembly (1) are movably connected to foldable double leg extension components (3). The inner end of the foldable double leg extension components (3) is provided with a shoe size adaptive adjustment component (4). The operator's foot cooperates with the retractable shoe size adaptive adjustment component (4). The bottom of the foldable double leg extension components (3) is fixedly provided with a foldable support component (5). The foldable support component (5) is set on the side end of the pumping unit crank (2) and fits against it.

2. The space expansion auxiliary device for adjusting the balance block of the oil pumping unit according to claim 1, characterized in that, The support docking platform assembly (1) includes a support platform plate (101), which is located at the upper end of the groove of the pumping unit crank (2). The support platform plate (101) is symmetrically provided with clearance holes (102). The positioning screw (103) passes through the clearance hole (102) from the lower end of the support platform plate (101) and extends upward to be locked by the limiting lock nut (104). The lower end of the positioning screw (103) is fixedly connected to a positioning block (105), which is engaged in the groove of the pumping unit crank (2).

3. The space expansion auxiliary device for adjusting the balance block of the oil pumping unit according to claim 2, characterized in that, The foldable double leg extension component (3) includes a pivot hinge (301), one end of which is connected to the support platform plate (101), and the other end is movably connected to the shoe body receiving cavity (302). An observation port (303) is provided at the center of the shoe body receiving cavity (302), and a reinforcing rib assembly (304) is welded on the observation port (303).

4. The space expansion auxiliary device for adjusting the balance block of the oil pumping unit according to claim 3, characterized in that, The shoe size adaptive adjustment component (4) includes an adaptive adjustment unit (400) disposed at the rear end of the inner edge of the shoe body accommodating cavity (302) and a shoe body limiting unit (410) disposed at the front end of the inner edge.

5. The space expansion auxiliary device for adjusting the balance block of the oil pumping unit according to claim 4, characterized in that, The adaptive adjustment unit (400) includes a track slide (401), which is connected to the upper and lower ends of the shoe body accommodating cavity (302). A reset telescopic spring (402) is sleeved on the lower end of the track slide (401). One end of the reset telescopic spring (402) is connected to the bottom end of the shoe body accommodating cavity (302), and the end of the reset telescopic spring (402) away from the bottom end of the shoe body accommodating cavity (302) is connected to the heel support plate (403). The heel support plate (403) is sleeved on the track slide (401). The heel support plate (403) has a U-shaped structure. The heel drives the heel support plate (403) to slide up and down, thereby stretching the reset telescopic spring (402).

6. The space expansion auxiliary device for adjusting the balance block of the oil pumping unit according to claim 4, characterized in that, The shoe body limiting unit (410) includes a limiting ring (411), which is fixedly disposed on both sides of the front end of the shoe body receiving cavity (302). The hook and loop fastener (412) passes through the two limiting rings (411) in sequence and is bonded to the hook surface and the fleece surface.

7. The space expansion auxiliary device for adjusting the balance block of the oil pumping unit according to claim 1, characterized in that, The foldable support assembly (5) has a foldable triangular support structure, including a support positioning plate (501). The side end of the support positioning plate (501) is attached to the side end of the pumping unit crank (2). The upper end of the support positioning plate (501) is movably hinged to a first connecting rod (502). The other ends of the support positioning plate (501) and the first connecting rod (502) are respectively movably hinged to a second connecting rod (503).

8. The space expansion auxiliary device for adjusting the balance block of the oil pumping unit according to claim 1, characterized in that, The foldable double leg extension component (3) has a grip handle (6) fixedly provided on the side end.

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