RU78254U1 - CLAMP FOR HOLDING A PUMP BAR COLUMN - Google Patents

Abstract

A clamp for holding a string of pump rods refers to the oil industry, in particular, equipment for deep pumping oil from a well by a rocking machine and can be used to clamp a polished rod and holding a string of pump rods on the crossarm of a suspension of a rocking machine. The clamp comprises a housing (1) in which a hole (2) is made for the stem (3). The housing (1) consists of half-shells (4) and (5) mounted on an axis (6) and interconnected by a bolt (7), a nut (8), and a washer (9). In the half-shell (4), a hole (11) is made under the body of the bolt (7), and in the half-shell (5) a through groove (12) is made for the bolt (7). New in the device is the rigid connection of the half-housing (4) with the axis (6) by means of a pin (10) and the execution of a recess (13) in the half-housing (5) to fix the bolt head (7). The technical result of the solution is to simplify the design of the clamp, increase manufacturability, ease of use due to the lack of the need to use additional tools (wrenches) to hold the bolt head when installing the clamp on the rod. 1 n.a. and 4 z.p. f-ly, 2 ill.

Description

The utility model relates to the oil industry, in particular, to equipment for deep pumping oil from a well with a rocking machine, can be used to clamp a polished rod and hold the string of pump rods on the crosshead of the suspension of the rocking machine.

A known clamp for holding a column of sucker rods (patent for the invention No. 2151262, ЕВВ 19/10, published date 2000.06.20), consisting of a housing with a throat for stuffing rod. On both sides of the pharynx, dies are installed in the housing in contact with the stuffing rod on one side, and on the other, with a slider through the wedge connector on rolling friction with the top of the wedge oriented in the direction of gravity of the pump rod string.

The disadvantages of the known clamp are the complexity of the design, as well as the high complexity of installing the clamp on the column of sucker rods.

A known clamp for holding a column of sucker rods (patent for utility model No. 62965, ЕВВ 19/10, published date. 2007.05.10), taken as a prototype, containing a housing with a hole for the rod. The housing consists of two half-shells mounted on an axis and connected by a threaded connection, while the axis is installed in the hole of one half-shell by press fit, in the hole of the other half-shell - by sliding fit. In one half-body, a hole was made for a bolt, in the other - a through groove for the body of the bolt and a larger than the width of the through groove for the rectangular head of the bolt.

The disadvantages of the known device are the high complexity of the holes for the press fit on one of the half-shells of the clamp, as well as the installation of the axis itself by the press fit in the hole of the half-shell. In addition, the presence of a through groove for the body of the bolt and a larger than the width of the through groove for the rectangular head of the bolt requires control of the correct location of the bolt head relative to the through grooves, as well as the use of a key holding the bolt head both when tightening the nut when installing the clamp on the rod, and when loosening the nut during removal of the clamp from the rod, which complicates the process of installing (removing) the clamp during its operation.

The technical task of the utility model is to simplify the design of the clamp, increase manufacturability, increase reliability and ease of use due to the lack of the need to use additional tools (wrenches) to hold the bolt head when installing the clamp on the rod.

The technical result is achieved by the fact that in the clamp for holding the string of pump rods, comprising a housing with a hole for the rod, consisting of two half-shells mounted on an axis and connected by a threaded connection, a bolt hole is made in one half-housing, and a through groove for the bolt body in the other half-housing , one of the half-shells is rigidly fixed on the axis, and the second is mounted with the possibility of rotation around it, while in the half-shell having a through groove under the body of the bolt, a recess is made under the head of the bolt, which fixes the head of the bolt when akruchivanii nut during installation of the clamp on the rod, and unscrewing the nut during removal from the clamp rod.

The technical result is also achieved by the fact that one of the half-shells is rigidly fixed to the axis with a pin.

The recess for fixing the bolt head can be made rectangular, or in the form of a segment, or repeating the shape of the bolt head.

Comparison of the claimed solutions with the prototype and other technical solutions in the art shows that the set of features described is not known from the existing level of technology, based on which we can conclude that it meets the criterion of the useful model of "novelty".

The compliance of the claimed utility model with the criterion of "industrial applicability" is shown on the example of a specific embodiment of the clamp for holding the string of pump rods.

Figure 1 presents a front view of the clamp for holding the string of pump rods, figure 2 is a top view of the clamp.

The clamp for holding the pump rod string contains a housing 1 in which a hole 2 is made for the stem 3. Housing 1 consists of half-bodies 4 and 5 mounted on an axis 6 and interconnected by a bolt 7, nut 8, washer 9. Half-body 4 connected to the axis 6 by means of a pin 10. In the half-housing 4, a hole 11 is made for the body of the bolt 7, and in the half-housing 5 there is a through groove 12 for the bolt 7 and a recess 13 for fixing the head of the bolt 7.

The device operates as follows.

At the operating site, the clamp is opened by unscrewing the nut 8 by an amount sufficient for the bolt head 7 to mesh with the recess 13, the rectangular head of the bolt 7 is rotated 90 degrees parallel to the through groove 12. Then, the stem is covered by the half-bodies 4 and 5 of the housing 1 of the open clamp holding columns of sucker rods. The head of the bolt 7 is inserted into the through groove 12, rotated 90 degrees perpendicular to the through groove 12, set (fix) in the recess 13 and tighten the nut 8 until the power connection of the half-shells 4 and 5.

The clamp for holding the column of sucker rods depending on the required load can be made single, double, triple, etc.

Claims (5)

1. A clamp for holding the string of pump rods, comprising a housing with a hole for the rod, consisting of two half-shells mounted on an axis and connected by a threaded connection, in one half-housing there is a hole for a bolt, in the other a through groove for the bolt body, characterized in that one of the half-shells is rigidly fixed on the axis, and the second is mounted with the possibility of rotation around it, while in the half-shell having a through groove under the body of the bolt, a recess is made for fixing the head of the bolt. 2. The clamp according to claim 1, characterized in that one of the half-shells is rigidly fixed to the axis with a pin. 3. The clamp according to claim 1, characterized in that the recess for fixing the bolt head is made in the form of a segment. 4. The clamp according to claim 1, characterized in that the recess for fixing the head of the bolt is made rectangular. 5. The clamp according to claim 1, characterized in that the recess for fixing the bolt head is made repeating the shape of the bolt head.