CN102777474A

CN102777474A - Anti-theft bolt set for motor of oil pumping unit

Info

Publication number: CN102777474A
Application number: CN2012102652848A
Authority: CN
Inventors: 冯新永; 谭晕; 钱程; 彭敏; 周国莹; 邓洪涛; 张鹏
Original assignee: 冯新永
Priority date: 2012-07-23
Filing date: 2012-07-23
Publication date: 2012-11-14

Abstract

The invention discloses an anti-theft bolt set for a motor of an oil pumping unit. The motor is located on a motor track; a bolt threads upwards through the motor track and the motor and then stretches into an anti-tamper hood; a nut is connected to the bolt, with the lower end face located on the inner underside of the anti-tamper hood; a lug boss is arranged at the bottom of the bolt and is located inside a bolt hole of the motor track; the axis of the bolt hole of the motor track does not coincide with the axis of the bolt; internal screw threads are arranged at the upper end of the anti-tamper hood; external screw threads matching with the internal screw threads at the upper end of the anti-tamper hood are arranged on a retainer cover; the retainer cover is installed on the nut through the internal screw threads on the upper end of the anti-temper hood; convex teeth are arranged on the upper end face of the retainer cover; and square edges used for mounting a spanner are unnecessary to be arranged at the lower part of the bolt. The nut is located inside the anti-tamper hood and the retainer cover is arranged at the upper end of the nut, so a thief can not disassemble the bolt and the nut through general tools. Therefore, the anti-theft bolt set can prevent the thief from knocking down the bolt set and stealing the motor and the component parts of the oil pumping unit and thereby can avoid the economic losses caused by the fact that the motor of the oil pumping unit is stolen.

Description

Pumping-unit motor anti-theft bolt group

Technical field

The present invention is the pumping-unit motor fixing bolt that oil field machinery oil is used, and is a kind of pumping-unit motor anti-theft bolt group.

Background technique

In the oil pumping of oil field, drive sucker rod, oil well pump with the oil extraction by pumping unit, the essential motor of installing on the pumping unit, motor is fixed on the base by screw.Present motor retaining screw is the inverted T shape screw, and rail type inverted T shape screw is following, and plain nut is last; Steal molecule when stealing motor, after being easy to plain nut dismantled motor is stolen, cause that oil well stops production; After pumping unit shuts down; Steal molecule and also can the accessory on the pumping unit be stolen, cause the loss of manufacturing mechanism and crude oil, produce heavy economic losses.

Summary of the invention

The purpose of this invention is to provide a kind of pumping-unit motor anti-theft bolt group, prevent to steal and steal motor and pumping unit accessory after molecule is dismantled the bolt group, avoid the various economic losses that cause because of pumping-unit motor is stolen.

The objective of the invention is to realize like this: comprise nut, tamper cover, motor, motor track, bolt, motor cabinet drops on the motor track, and bolt passes the motor track from bottom to top, motor stretches in the tamper cover; Nut is connected on the bolt, and the nut lower end surface is sitting on the inner bottom surface of tamper cover, and boss is arranged at the bolt bottom; Boss is in the bolt hole of motor track, make the motor track bolt hole axis not with the dead in line of bolt, there is internal thread tamper cover upper end; Outside thread is arranged on the door; The internal thread of outside thread on the door and tamper cover upper end matches, and door is installed on the nut through the internal thread of tamper cover upper end, and there is double wedge the door upper-end surface.

The invention has the beneficial effects as follows: bolt bottom has boss, boss to be in the bolt hole of motor track, make the motor track bolt hole axis not with the dead in line of bolt; Boss just can play anti-rotation; Need not be provided for the square rib of assembly wrench in the bolt bottom, nut is in the tamper cover, and there is door the nut upper end; Therefore; Steal molecule and can't use general tool demounting bolt, nut, can prevent to steal and steal motor and pumping unit accessory after molecule is dismantled the bolt group, can avoid the various economic benefits that cause because of pumping-unit motor is stolen.

Description of drawings

Fig. 1 is the erection drawing of the embodiment of the invention.

Fig. 2 is the sectional view after part is cut open from A-A among Fig. 1.

Embodiment

Describe below in conjunction with Fig. 1,2 pairs of embodiment of the invention.

As can be seen from the figure, the embodiment of the invention comprises nut 2, tamper cover 3, motor 4, motor track 5, bolt 7, and motor 4 is located on the motor track 5; Bolt 7 passes motor track 5 from bottom to top, motor 4 stretches in the tamper cover 3, and nut 2 is connected on the bolt 7, and nut 2 lower end surfaces are sitting on the inner bottom surface of tamper cover 3; Boss 6 is arranged at bolt 7 bottoms; Boss 6 is in the bolt hole of motor track 5, make motor track 5 bolt hole axis not with the dead in line of bolt 7, there is internal thread 8 tamper cover 3 upper ends; Outside thread 9 is arranged on the door 1; Outside thread 9 on the door 1 matches with the internal thread 8 of tamper cover 3 upper ends, and door 1 is installed on the nut 2 through the internal thread 8 of tamper cover 3 upper ends, and there is double wedge 10 door 1 upper-end surface.

Boss 6 is arranged at bolt 7 bottoms; Boss 6 is in the bolt hole of motor track 5; Make motor track 5 bolt hole axis not with the dead in line of bolt 7, boss 6 just can play anti-rotation, need not be provided for the square rib of assembly wrench in bolt 7 bottoms; Door 1 has blocked nut 2, steals molecule and can not entangle nut 2 with socket wrench.

In the time of need breaking the bolt group, use the magnet that matches with door 1 upper-end surface double wedge to hold door 1 and upwards carry, outside thread and the internal thread 8 of tamper cover 3 upper ends on the door 1 are screwed; Door 1 is taken away from nut 2; Entangle nut 2 rotations with socket wrench again, the turnbarrel spanner is because bolt 7 bottoms have boss 6 can play anti-rotation; Therefore, just can nut 2, bolt 7 be taken apart.

The magnet that has only the double wedge 10 with door 1 upper-end surface to match could pick up door, steals the magnet that molecule can't find the double wedge 10 with door 1 upper-end surface to match, so stealing molecule can't the demounting bolt group.

In order to improve anti-theft effect, the double wedge 10 of every cover door 1 upper-end surface is all had any different.The magnet that matches can only be joined a door 1 by a cover.

Claims

1. pumping-unit motor anti-theft bolt group; Comprise nut (2), tamper cover (3), motor (4), motor track (5), bolt (7), motor (4) is located on the motor track (5), and bolt (7) passes motor track (5) from bottom to top, motor (4) stretches in the tamper cover (3); Nut (2) is connected on the bolt (7); Nut (2) lower end surface is sitting on the inner bottom surface of tamper cover (3), it is characterized in that: boss (6) is arranged at bolt (7) bottom, and boss (6) is in the bolt hole of motor track (5); Make motor track (5) bolt hole axis not with the dead in line of bolt (7); There is internal thread (8) tamper cover (3) upper end, and outside thread (9) is arranged on the door (1), and the outside thread (9) on the door (1) matches with the internal thread (8) of tamper cover (3) upper end; Door (1) is installed on the nut (2) through the internal thread (8) of tamper cover (3) upper end, and there is double wedge (10) door (1) upper-end surface.