Electric horsehead device with positioning function for oil pumping unit

Abstract

The utility model relates to the technical field of oil pumping units, in particular to an electric horse head device with a positioning function for an oil pumping unit. A lug seat is fixed in the horse head, one end of a walking beam is rotatably connected with a central shaft, the central shaft is fixedly connected with the lug seat, a worm gear concentric with the central shaft is fixed in the lug seat, a worm is rotatably connected to the walking beam, the worm is meshed with the worm gear, a driving unit is fixed to the walking beam, the driving unit is in transmission connection with the worm, and a rotating disc is fixed to the lower end of the central shaft. An electric telescopic rod corresponding to the rotary disc is fixed to the walking beam, a clamping pin corresponding to the rotary disc is elastically and slidably connected to the walking beam, the electric telescopic rod is parallel to the clamping pin, the telescopic end of the electric telescopic rod is fixedly connected with the clamping pin, a clamping groove corresponding to the clamping pin is formed in the rotary disc, the clamping pin is clamped in the clamping groove, and the electric telescopic rod is electrically connected with a switch on the ground. When the horse head works, the bayonet lock is matched with the clamping groove in the rotating disc so that the horse head can be positioned, and the horse head can be effectively prevented from rotating.

Description

TECHNICAL FIELD

[0001] The utility model relates to pumping unit technical field, specifically pumping unit electric donkey head device with positioning function. BACKGROUND

[0002] The old donkey head connecting mode is that four connecting pins are needed for connecting four ear plates (two donkey head ear plates and two beam ear plates), which is a rod type with a taper in front and needs to be tightly matched with the ear plate hole. Since the pumping unit works for a long time outdoors, it will rust, and even rust to death. During well repair work, someone must climb onto the beam to hit out two donkey head pins on one side with a sledgehammer. The other two donkey head pins on the other side are very difficult to turn due to rust, tight fit, and different shafts of the two pins, and must be assisted by a crane to complete the work.

[0003] The patent file with publication number CN221053667U discloses a rotating donkey head device of a beam-type pumping unit, which comprises a donkey head, a worm gear provided on the donkey head and fixedly connected with the donkey head, a beam, a worm provided on the beam and rotationally connected with the beam, a rotating member, the length direction of the rotating member and the axial direction of the worm are both perpendicular to the length direction of the beam, and the length direction of the rotating member is perpendicular to the axial direction of the worm, the beam and the donkey head are rotationally connected through the rotating member, the worm gear is engaged with the worm, and the worm is rotated to drive the worm gear to rotate, and the worm gear drives the donkey head to rotate around the rotating member.

[0004] The transmission mode of the worm gear and the worm is a typical gear reduction mechanism, which has a large transmission ratio and can achieve high torque output at a low speed. This transmission mode can save manpower because the force required for the rotation of the donkey head is small, and at the same time, it can also ensure that the rotation speed of the donkey head is relatively slow, so as to be more stable and safe; the engagement of the worm gear and the worm has a self-locking function, when the helical lines of the worm gear and the worm are in the same direction, the friction between them can prevent relative movement, thereby achieving self-locking, which can prevent the donkey head from rotating accidentally at the wellhead position, thereby ensuring the safety of well repair work; by rotating the worm, the worm gear and the donkey head can be rotated, since the engagement of the worm gear and the worm is continuous, the rotation angle of the donkey head can be accurately controlled by controlling the number of rotation of the worm, this design can easily rotate the donkey head to the required angle and position when needed, thereby achieving convenient rotation of the donkey head; by rotating the donkey head, the wellhead position can be easily emptied for well repair work.

[0005] In the technical solution of the above patent file, the donkey head lacks positioning function when working, and only relies on the self-locking function of the worm gear and the worm to position the donkey head, which is easy to deviate when working, and the worm gear and the worm are easy to be damaged. UTILITY MODEL CONTENTS

[0006] The main purpose of the utility model is to provide an electric donkey head device of pumping unit with positioning function, which can avoid climbing operation, realize automatic deflection of the donkey head and facilitate well repair operation.

[0007] In order to realize the above-mentioned purpose, the utility model provides a technical scheme:

[0008] The electric donkey head device of pumping unit with positioning function comprises a donkey head, an ear seat fixed in the donkey head, a central shaft rotationally connected to one end of a walking beam, the central shaft being fixedly connected with the ear seat, a worm wheel concentric with the central shaft fixed in the ear seat, a worm rotationally connected to the walking beam, the worm being engaged with the worm wheel, a driving unit fixed to the walking beam, the driving unit being transmissionally connected with the worm, a turntable fixed to the lower end of the central shaft, an electric telescopic rod corresponding to the turntable fixed to the walking beam, a clamping pin corresponding to the turntable elastically and slidingly connected to the walking beam, the electric telescopic rod being parallel to the clamping pin, the telescopic end of the electric telescopic rod being fixedly connected with the clamping pin, a clamping groove corresponding to the clamping pin being formed in the turntable, the clamping pin being clamped in the clamping groove, and the electric telescopic rod being electrically connected with a switch on the ground.

[0009] Specifically, the driving unit comprises a motor fixed to the walking beam, a speed reducer fixed to the walking beam, the output shaft of the motor being fixedly and concentrically connected with the input shaft of the speed reducer, gears fixedly and concentrically arranged on the output shaft of the speed reducer and the worm, and two gears being transmissionally connected through a chain, the motor being electrically connected with a driver and a controller on the ground.

[0010] Specifically, the worm wheel and the ear seat are fixedly connected through a plurality of bolts.

[0011] Specifically, the motor is a servo motor, the servo motor is internally provided with a rotary encoder, and the controller is a PLC controller.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] 1. When the donkey head works, the clamping pin and the clamping groove on the turntable cooperate to position the donkey head, effectively prevent the donkey head from rotating and effectively protect the worm wheel and the worm.

[0014] 2. When repairing a well, the electric telescopic rod drives the clamping pin to move and exit from the clamping groove of the turntable through the switch, then the motor is rotated by a set angle through the controller on the ground, and then the donkey head is rotated by a set angle under the transmission of the two gears and the chain and the transmission of the worm wheel and the worm, so that the donkey head is deflected to facilitate well repair operation without manual climbing operation, and the safety is high. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic view of the utility model.

[0016] Figure 2 For Figure 1 Enlarged view of the A region.

[0017] The names of the components in the drawings are: 1, the head, 2, the beam, 3, the drive unit, 4, the worm, 5, the center shaft, 6, the electric telescopic rod, 7, the bayonet, 8, the chain, 9, the ear seat, 10, the worm gear, 11, the card slot, 12, the turntable. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.

[0019] Embodiment one: refer to Figure 1 As shown, the electric pumping unit electric head device with positioning function, including the head 1, the ear seat 9 is fixed in the head 1, the beam 2 one end rotatably connected with the center shaft 5, the center shaft 5 and the ear seat 9 are fixedly connected, the ear seat 9 is fixedly connected with the worm gear 10 concentric with the center shaft 5. Specifically, the worm gear 10 and the ear seat 9 are fixedly connected by a plurality of bolts. The beam 2 is rotatably connected with the worm 4, and the worm 4 is engaged with the worm gear 10.

[0020] The beam 2 is fixedly connected with the drive unit 3, and the drive unit 3 is drivingly connected with the worm 4.

[0021] The drive unit 3 includes a motor fixed on the beam 2, a reducer fixed on the beam 2, the output shaft of the motor and the input shaft of the reducer are concentrically fixedly connected, the output shaft of the reducer and the worm 4 are concentrically fixed with gears, the two gears are drivingly connected by the chain 8, and the motor is electrically connected with the ground drive and the controller.

[0022] The motor is a servo motor, the servo motor is provided with a built-in rotary encoder, and the controller is a PLC controller.

[0023] When repairing the well, the controller on the ground makes the motor rotate by a set angle, and under the driving action of the two gears and the chain 8 and the driving action of the worm gear 10 and the worm 4, the head 1 rotates by a set angle, which facilitates the well repair work, eliminates the need for manual climbing operation, and has high safety.

[0024] Embodiment two: on the basis of embodiment one, refer to Figure 1 and Figure 2As shown, the lower end of the central shaft 5 is fixed with a rotating disc 12, the walking beam 2 is fixed with a corresponding electric telescopic rod 6, the walking beam 2 is elastically and slidably connected with a corresponding pin 7, the electric telescopic rod 6 is parallel to the pin 7, the telescopic end of the electric telescopic rod 6 is fixedly connected with the pin 7, the rotating disc 12 is provided with a corresponding slot 11, the pin 7 is clamped in the slot 11, and the electric telescopic rod 6 is electrically connected with the switch on the ground.

[0025] When repairing the well, the switch is opened, the electric telescopic rod 6 is started and drives the pin 7 to exit from the slot 11 of the rotating disc 12, and then the walking beam 1 can be rotated.

[0026] After the well is repaired, the controller is used to make the motor reversely rotate by a set angle, so that the walking beam 1 is restored, and after the walking beam 1 is restored, the switch is used to make the electric telescopic rod 6 drive the pin 7 to restore and be clamped in the slot 11 of the rotating disc 12, the pin 7 is clamped in the slot 11 of the rotating disc 12, so that the walking beam 1 can be positioned, the walking beam 1 can be effectively prevented from rotating, and the worm wheel 10 and the worm 4 can be effectively protected.

[0027] The above only describes the preferred embodiments of the present application, and is not used to limit the present application, and any modification, equivalent replacement and improvement within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A pumping unit electric drive horse head device with positioning function, comprising a horse head (1), an ear seat (9) is fixed in the horse head (1), a center shaft (5) is rotatably connected at one end of a walking beam (2), the center shaft (5) is fixedly connected with the ear seat (9), a worm gear (10) concentric with the center shaft (5) is fixed in the ear seat (9), a worm (4) is rotatably connected on the walking beam (2), the worm (4) is engaged with the worm gear (10), characterized in that, The walking beam (2) is fixed with a driving unit (3), the driving unit (3) is in transmission connection with a worm (4), the lower end of a central shaft (5) is fixed with a rotating disc (12), the walking beam (2) is fixed with an electric telescopic rod (6) corresponding to the rotating disc (12), the walking beam (2) is in elastic sliding connection with a clamping pin (7) corresponding to the rotating disc (12), the electric telescopic rod (6) is parallel to the clamping pin (7), the telescopic end of the electric telescopic rod (6) is fixedly connected with the clamping pin (7), the rotating disc (12) is provided with a clamping groove (11) corresponding to the clamping pin (7), the clamping pin (7) is clamped in the clamping groove (11), and the electric telescopic rod (6) is electrically connected with a switch on the ground.

2. The electric pumping unit head unit with positioning function according to claim 1, characterized in that, The driving unit (3) comprises a motor fixed on the walking beam (2), a speed reducer fixed on the walking beam (2), a concentric fixed connection between an output shaft of the motor and an input shaft of the speed reducer, gears concentrically fixed on the output shaft of the speed reducer and the worm (4), transmission connection between the two gears through a chain (8), and electrical connection between the motor and a driver and a controller on the ground.

3. The electric pumping unit head unit with positioning function according to claim 1, characterized in that, The worm gear (10) and the ear seat (9) are fixedly connected through a plurality of bolts.

4. The electric pumping unit head unit with positioning function according to claim 2, characterized in that, The motor is a servo motor, the servo motor is provided with a built-in rotary encoder, and the controller is a PLC controller.

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