A new type of automatic light rod clamp device for pumping unit

Abstract

This utility model belongs to the technical field of oil production equipment, and in particular, it relates to a novel automated clamping device for the polished rod of a pumping unit. The device includes a polished rod clamping module; the polished rod clamping module includes two horizontally opposing clamping blocks and an adjusting component for adjusting the distance between the two clamping blocks; positioning grooves for positioning the polished rod are provided on the opposite sidewalls of the two clamping blocks; the adjusting component includes a connecting rod, one end of which is horizontally hinged to one of the clamping blocks, and the other end passing horizontally through the other clamping block; the adjusting component also includes a push sleeve coaxially threaded to the end of the connecting rod passing through the clamping block, and a rotary drive module for driving the push sleeve to rotate on a fixed axis; when assembled, the push sleeve and the sidewall of the adjacent clamping block move into contact; this utility model can automatically clamp or release the device according to the vertical position of the suspension device, and the system operates stably and efficiently, directly avoiding the risk of accidents caused by accidental slippage of the clamp.

Description

Technical Field

[0001] This utility model relates to the field of oil production equipment technology, and in particular to a novel automated clamping device for the polished rod of an oil pumping unit. Background Technology

[0002] A pumping unit is a machine used for extracting oil, commonly known as a "nodding donkey" pump. It is the most important lifting device in a rod-type pumping system. The polished rod is a crucial component of the pumping unit, primarily connecting the wellhead to the downhole pump and transmitting power downhole to extract crude oil. During pumping, the polished rod and packing box are sealed by a spiral packing to prevent blowouts. As production continues, workers need to replace the packing periodically. This replacement requires two operators: one controls the up-and-down movement of the pumping head, while the other removes or installs clips on the polished rod. However, this traditional clip structure is inefficient due to the need for two people working together; the person removing or installing the clips is also at risk of being injured by falling clips, especially their fingers.

[0003] These risks exist because current clamps can only be operated directly with a wrench. Therefore, in order to improve work efficiency and ensure employee safety, we propose a new type of automated clamping device for the polished rod of an oil pumping unit. Summary of the Invention

[0004] The purpose of this invention is to provide a novel automated clamping device for the polished rod of an oil pumping unit, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel automated clamping device for the polished rod of an oil pumping unit, comprising a polished rod clamping module for clamping the polished rod;

[0006] The optical rod clamping module includes two horizontally opposite clamping blocks and an adjusting component for adjusting the distance between the two clamping blocks; each of the two clamping blocks has a positioning groove on its opposite sidewall for positioning the optical rod, and the two positioning grooves together form a positioning cavity for fixing the optical rod.

[0007] The adjustment assembly includes a connecting rod, one end of which is horizontally hinged to one of the clamping blocks, and the other end of which passes horizontally through the other clamping block.

[0008] The adjustment assembly also includes a push sleeve coaxially threaded to one end of the connecting rod that passes through the clamping block, and a rotary drive module for driving the push sleeve to rotate on a fixed axis; when assembled in place, the push sleeve and the side wall of the clamping block adjacent to it move into contact.

[0009] The novel automated clamping device for the oil pumping unit of this utility model includes two clamping blocks with one end horizontally hinged together; each of the two clamping blocks has a receiving groove for accommodating the connecting rod on the end face opposite to its rotation axis, one end of the connecting rod is horizontally hinged to one of the clamping blocks, and the other end passes through the receiving groove on the other clamping block.

[0010] The novel automated clamping device for the polished rod of the oil pumping unit according to this utility model includes a push sleeve comprising a sleeve body coaxially threaded to the free end of the connecting rod, an outer sleeve coaxially fixedly sleeved on the outside of the sleeve body, and a worm gear coaxially disposed on the outer wall of the outer sleeve; the outer sleeve is longitudinally rotatably connected to the clamping block adjacent to the sleeve body via a mounting bracket; when assembled in place, the space between the mounting bracket and the clamping block adjacent to it forms a positioning cavity for positioning the push sleeve, and one end of the sleeve body facing the clamping block abuts against it.

[0011] The novel automated clamping device for the polished rod of the oil pumping unit of this utility model includes a rotary drive module comprising a worm adapted to the worm gear, a motor for driving the worm to rotate, and a transmission unit for transmitting the motor and the worm; the worm is vertically arranged and horizontally rotatably connected to the mounting frame.

[0012] The novel automated clamping device for the polished rod of the oil pumping unit according to this utility model includes a mounting frame comprising a mounting plate longitudinally disposed on the side of the sleeve body opposite to the clamping block, and a connecting plate horizontally disposed between the mounting plate and the clamping block; the mounting plate is connected to the connecting plate; the end of the outer sleeve opposite to the clamping block is rotatably connected to the mounting plate; the upper end of the worm gear is rotatably connected to the connecting plate, and the lower end is horizontally rotatably connected to the clamping block through a connecting seat.

[0013] The novel automated clamping device for the polished rod of the oil pumping unit of this utility model includes a transmission unit comprising a first gear located above the connecting plate and coaxially fixed with the worm gear, a second gear meshing with the first gear, and a reducer located below the connecting plate; the shaft of the second gear passes through the connecting plate and is connected to the output shaft of the reducer; the reducer and the sleeve body are located at opposite ends of the clamping block; and the rotor of the motor is connected to the input shaft of the reducer.

[0014] The novel automated clamping device for the polished rod of the oil pumping unit of this utility model has an abutment portion at one end of the sleeve body near the clamping block that fits against its side wall, and the outer diameter of the abutment portion is larger than the diameter of the receiving groove.

[0015] The novel automated clamping device for the polished rod of the oil pumping unit according to this utility model further includes a posture adjustment module for adjusting the horizontal position of the polished rod clamping module above the suspension rope device.

[0016] The novel automated clamping device for the polished rod of the oil pumping unit described in this utility model includes a position adjustment module located below the polished rod clamping module.

[0017] The novel automated clamping device for the polished rod of the oil pumping unit of this utility model includes a position adjustment module comprising a horizontally arranged base plate, a mounting seat arranged parallel above the base plate, and a guide shaft unit that longitudinally connects the base plate and the mounting seat; a pressure sensor is provided between the mounting seat and the base plate.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] The rotary drive module drives the propulsion sleeve to rotate, thereby adjusting the distance between the two clamping blocks to be smaller or larger. This allows for automatic clamping and loosening of the rod, replacing traditional manual wrench operation, eliminating operation delays, and significantly improving work efficiency. At the same time, the rotary drive module enables unmanned operation, directly eliminating the accidental slippage and potential injury that may occur when the clamp is accidentally slipped during operation in traditional methods. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is an overall structural diagram of the present invention.

[0022] Figure 2 for Figure 1 A partial exploded view.

[0023] Figure 3 for Figure 2 Assembly status diagram.

[0024] Figure 4 for Figure 3 A magnified view of a portion of the image.

[0025] Figure 5 for Figure 4 The front view.

[0026] Figure 6 for Figure 1 Another perspective view.

[0027] Figure 7 for Figure 6 A magnified view of a portion of the image. Detailed Implementation

[0028] The terms "first," "second," "third," and "fourth," etc., used in the specification, claims, and accompanying drawings of this utility model are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0029] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0030] "Multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0031] Furthermore, the terms indicating orientation, such as "up," "down," "left," "right," "upper end," "lower end," and "longitudinal," are all based on the posture and position of the device or equipment described in this solution during normal use.

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of this utility model. Obviously, the described embodiments are some, but not all, embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0033] This embodiment discloses, as follows: Figures 1 to 7The novel automated clamping device for the oil pumping unit includes a rod clamping module a1 for holding the rod. The rod clamping module a1 includes two horizontally opposite clamping blocks a11 and an adjusting component a12 for adjusting the distance between the two clamping blocks a11. Specifically, the two clamping blocks a11 are two cuboid structures. Each of the opposite sidewalls of the two clamping blocks a11 is provided with a positioning groove 50 for positioning the rod 400. The two positioning grooves 50 enclose a positioning cavity for fixing the rod 400. Furthermore, a detachable arc-shaped jaw pad 60 is provided on the inner wall of the positioning groove 50. The jaw material is required to have high hardness, generally using high carbon steel or high-quality mold steel. When clamped in place, the concave surfaces of the two arc-shaped shallow jaw pads are tightly fitted with the sidewalls of the rod.

[0034] Specifically, on the side wall of the clamping block a11 located away from the convex surface of the arc-shaped jaw pad 60, a first through hole 70 is provided along the radial direction of the guide rod, penetrating the positioning groove 50. The end of the first through hole 70 away from the positioning groove 50 has a countersunk hole 80. A first locking bolt 90 is provided in the first through hole 70, which can be positioned on the bottom surface of the countersunk hole 80. The first locking bolt 90 is screwed to the arc-shaped jaw pad 60 and tightened on the inner wall of the positioning groove 50.

[0035] The adjusting component a12 includes a connecting rod a121, one end of which is horizontally hinged to a clamping block a11, and the other end passes horizontally through another clamping block a11.

[0036] Furthermore, the adjustment assembly a12 also includes a push sleeve a122 coaxially threadedly connected to one end of the connecting rod a121 that passes through the clamping block a11, and a rotary drive module a123 that drives the push sleeve a122 to rotate on a fixed axis; when assembled in place, the push sleeve a122 and the side wall of the adjacent clamping block a11 move into contact; wherein, the rotary drive module a123 is electrically connected to the controller 40 to control the automatic clamping and releasing operation of the light rod 400 according to the control signal.

[0037] In actual operation, there are usually two rod clamping modules, located on the upper and lower sides of the suspension device 500 respectively.

[0038] The rotary drive module a123 drives the propulsion sleeve a122 to rotate, thereby adjusting the distance between the two clamping blocks a11 to be smaller or larger. This allows for automatic clamping and loosening of the guide rod 400, replacing the traditional manual wrench operation, eliminating operation delays, and significantly improving work efficiency. At the same time, the rotary drive module a123 enables unmanned operation, directly eliminating the accidental slippage and potential injury that may occur when the clamp is accidentally dropped during operation in the traditional method.

[0039] In this embodiment, one end of each of the two clamping blocks a11 is horizontally hinged by a horizontal pivot 100. The end face of the clamping block a11 has a mounting groove 110 for mounting the pivot 100. The adjusting component a12 is located at the end of the clamping block a11 away from its pivot 100. Each of the two clamping blocks a11 has a receiving groove 120 for accommodating the connecting rod a121 on its end face away from its pivot, so that the side view of the clamping block a11 is I-shaped. One end of the connecting rod a121 extends into the receiving groove 120 on one of the clamping blocks a11 and is horizontally rotatably connected to it through a vertical hinge pin 130. The other end passes through the receiving groove 120 on the other clamping block a11. The hinge pin 130 can be removed upwards. In order to prevent the hinge pin 130 from falling off, a second locking bolt 140 is horizontally provided on the side wall of the clamping block a11 to fix the hinge pin 130.

[0040] In this embodiment, the propulsion sleeve a122 includes a sleeve body 1a coaxially threadedly connected to the free end of the connecting rod, an outer sleeve 1b coaxially fixedly sleeved on the outside of the sleeve body 1a, and a worm gear b1 coaxially disposed on the outer wall of the outer sleeve 1b; the outer sleeve 1b is longitudinally rotatably connected to the mounting bracket and the clamping block a11 adjacent to the sleeve body; when assembled in place, the space between the mounting bracket and the clamping block a11 adjacent to it forms a positioning cavity for positioning the propulsion sleeve a122, and the end of the sleeve body facing the clamping block a11 abuts against it; specifically, the end of the sleeve body near the clamping block a11 has an abutment portion a1221 that fits against its side wall, the abutment portion a1221 is specifically annular and its outer diameter is larger than the diameter of the receiving groove 120, the abutment portion a1221 and the sleeve body can be integrally connected or separately disposed, preferably, this embodiment adopts the separate disposal method.

[0041] The outer wall contour of the sleeve body 1a and the inner contour of the outer sleeve 1b are both hexagons that fit each other (of course, they can also be pentagons, heptagons or other shapes, as long as they can prevent the sleeve body 1a and the outer sleeve 1b from rotating relative to each other, for example, a protrusion is provided on the outer wall of the sleeve body, and a groove is provided on the inner wall of the outer sleeve 1b to prevent the protrusion and the sleeve body from rotating circumferentially); a bearing 150 is coaxially fixed on the outer wall of the outer sleeve 1b away from the abutment a1221, and the outer ring of the bearing 150 is fixed to the mounting bracket.

[0042] In this embodiment, the rotary drive module a123 includes a worm a1231 adapted to the worm gear b1, a motor a1232 driving the worm a1231 to rotate, and a transmission unit a1233 connecting the motor a1232 and the worm a1231; the worm a1231 is vertically arranged and horizontally rotatably connected to the mounting bracket 30, and the motor a1232 is electrically connected to and controlled by the lower-level machine; when performing the clamping operation, the lower-level machine receives the start signal from the background control system. The command sends a clamping electrical signal to motor a1232, which starts and drives the outer sleeve 1b and sleeve body 1a to rotate synchronously through the cooperation of worm gear a1231 and worm wheel b1. This causes the sleeve body 1a to advance towards the clamping block a11 on the connecting rod a121 and to abut against the side wall of the clamping block a11 with the abutment part. In this way, the two clamping blocks a11 clamp the bare rod under the closing force of the connecting rod. The process is reversed when performing the release operation.

[0043] In this embodiment, the mounting bracket 30 includes a mounting plate 31 longitudinally disposed on the side of the sleeve body away from the clamping block a11, and a connecting plate 32 horizontally disposed between the mounting plate 31 and the clamping block a11; the connecting plate 32 is detachably connected to the adjacent clamping block a11 by bolts (when assembled, the upper surface of the connecting plate 32 is flush with the upper surface of the clamping block a11, and both ends are also flush with the two ends of the clamping block a11), and the mounting plate 31 is also fixed to the end face of the connecting plate 32 away from the clamping block a11 by bolts; the mounting plate 31 is provided with a through hole 180 for the outer sleeve 1b to pass through, and the outer ring of the bearing 150 is fixedly embedded on the side wall of the mounting plate 31 away from the abutment part a1221, and the inner ring of the bearing 150 is coaxially fixed with the outer sleeve 1b;

[0044] The upper end of the worm gear a1231 is rotatably connected to the connecting plate 32, and the lower end is rotatably connected to the clamping block a11 via the connecting seat 200. Specifically, the connecting seat 200 is L-shaped, and its longitudinal end is fixed to the side wall of the clamping block a11 by bolts. Its transverse end is flush with the lower surface of the clamping block a11 and is also fixed to the side wall of the clamping block a11 by bolts. After assembly, the lower end of the mounting plate 31 abuts against the end face of the connecting seat 200 away from the clamping block a11, and the two are also connected by bolts.

[0045] In this embodiment, the transmission unit a1233 includes a first gear 1a1 located above the connecting plate and coaxially fixed with the worm gear a1231, a second gear 1a2 meshing with the first gear 1a1, and a reducer 240 located below the connecting plate 32; the shaft of the second gear 1a2 passes through the connecting plate and is connected to the output shaft of the reducer 240, and the reducer 240 and the sleeve body 1a are located at the two ends of the clamping block a11 respectively; the rotor of the motor is connected to the input shaft of the reducer 240; the first gear 1a1 and the second gear 1a2 located on the connecting plate can provide sufficient space for the installation of the worm gear, and also conforms to the mechanical logic of the force transmission of the worm gear.

[0046] In order to provide feedback to the control system, an acceleration sensor 300 can be installed below the reducer 240 to monitor the up and down movement speed of the upper clamping mechanism, so as to prevent the donkey head from being lowered or raised too quickly in conjunction with the background control system.

[0047] In this embodiment, the solution also includes a pose adjustment module a2 for adjusting the horizontal position of the optical rod clamping module a1; specifically, it is used to adjust the optical rod clamping module a1 above the suspension rope device 500. The pose adjustment module a2 is located below the upper optical rod clamping module a1 to adjust the position and posture of the optical rod clamping module a1, so as to dynamically correct the positional deviation of the clamping (such as optical rod tilt), ensure uniform distribution of clamping force, and avoid local wear.

[0048] In this embodiment, the posture adjustment module a2 can be either automatically driven by the lower computer 40 or manually adjusted. Preferably, considering cost, necessity, and size, this embodiment prefers the manually adjustable structure. Specifically, the posture adjustment module a2 includes a horizontally arranged base plate a21, a mounting seat a22 parallel to the base plate a21, and a guide shaft unit a23 longitudinally connecting the base plate a21 and the mounting seat a22. The guide shaft unit a23 is a linear bearing. If an automatic method is used, the guide shaft unit a23 can be implemented using an electric cylinder or a lead screw motor module. This posture adjustment method is existing technology and will not be elaborated further here.

[0049] Furthermore, the rod clamping module a1 above the suspension device 500 is located on the upper surface of the mounting base a22. A pressure sensor 3a is provided between the mounting base a22 and the base plate a21. The pressure sensor 3a is also used to feed back the real-time pressure value it receives to the lower computer 40. It is used to collect the downward pressure of the upper rod clamping module a1 in real time during the up-and-down movement of the suspension device 500. This pressure detection is not only used to feed back the positional stability of the upper rod clamping module a1, but also to generate a trial operation curve diagram for the background control system (for the working conditions of the pumping unit, different waveforms correspond to different pumping conditions). It is also used in conjunction with the acceleration sensor 300 to calculate the up-and-down movement speed of the suspension device 500, reflecting the threshold of the maximum length of the rod after it is lifted, to prevent over-lifting.

[0050] The lower unit 40 is mounted on the mounting base a22 via the housing 250, while the acceleration sensor 300 is fixed on the upper surface of the mounting base a22. The lower surface of the connecting base 200 is in close contact with the upper surface of the mounting base a22. After assembly, the mounting plate 31 and the connecting plate 32 together form a protective cavity for the worm gear, so as to prevent foreign objects from easily entering the interior and interfering with the transmission of the worm gear.

[0051] Furthermore, a torque sensor (not shown) is also installed at the output end of the reducer 240 to provide real-time feedback of the load torque to the lower-level machine 40. In addition, in order to enable the equipment to adapt to the extreme environment of cold winter and ensure the normal operation of the lower-level machine 40, a temperature sensor (not shown) and an electric heating wire (not shown) can be installed inside the housing 250. When the lower-level machine 40 detects that the ambient temperature is too low through the temperature sensor, it will start the electric heating wire to heat the inside of the housing 250.

[0052] The mounting base a22 and the base plate a21 are both square, while the clamping block a11 is rectangular and its length is the same as the width of the mounting base a22. When assembled, the two ends of the clamping block a11 are aligned with the edge of the mounting base a22, and the mounting plate 31, the reducer 240 and the acceleration sensor 300 are also flush with the edge of the mounting base a22. Furthermore, a downward-facing elongated boss 260 is integrally provided in the middle of the lower surface of the mounting base a22. The elongated boss 260 is aligned with the two ends of the mounting base a22, and the pressure sensor 3a is located directly below the elongated boss 260.

[0053] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A novel automated clamping device for the polished rod of an oil pumping unit, characterized in that, Including a light rod clamping module for clamping light rods; The optical rod clamping module includes two horizontally opposite clamping blocks and an adjusting component for adjusting the distance between the two clamping blocks; each of the two clamping blocks has a positioning groove on its opposite sidewall for positioning the optical rod, and the two positioning grooves together form a positioning cavity for fixing the optical rod. The adjustment assembly includes a connecting rod, one end of which is horizontally hinged to one of the clamping blocks, and the other end of which passes horizontally through the other clamping block. The adjustment assembly also includes a push sleeve coaxially threaded to one end of the connecting rod that passes through the clamping block, and a rotary drive module for driving the push sleeve to rotate on a fixed axis; when assembled in place, the push sleeve and the side wall of the clamping block adjacent to it move into contact.

2. The novel automated clamping device for the polished rod of an oil pumping unit according to claim 1, characterized in that, One end of each of the two clamping blocks is horizontally hinged; each of the two clamping blocks has a receiving groove on its end face away from its axis of rotation to accommodate the connecting rod, one end of the connecting rod is horizontally hinged to one of the clamping blocks, and the other end passes through the receiving groove on the other clamping block.

3. The novel automated clamping device for the polished rod of an oil pumping unit according to claim 2, characterized in that, The propulsion sleeve includes a sleeve body coaxially threaded to the free end of the connecting rod, an outer sleeve coaxially fixedly sleeved on the outside of the sleeve body, and a worm gear coaxially disposed on the outer wall of the outer sleeve; the outer sleeve is longitudinally rotatably connected to the clamping block adjacent to the sleeve body through a mounting bracket; when assembled in place, the space between the mounting bracket and the clamping block adjacent to it forms a positioning cavity for positioning the propulsion sleeve, and the end of the sleeve body facing the clamping block abuts against it.

4. The novel automated clamping device for the polished rod of an oil pumping unit according to claim 3, characterized in that, The rotary drive module includes a worm adapted to the worm gear, a motor that drives the worm to rotate, and a transmission unit that drives the motor and the worm; the worm is vertically arranged and horizontally rotatably connected to the mounting bracket.

5. The novel automated clamping device for the polished rod of an oil pumping unit according to claim 4, characterized in that, The mounting bracket includes a mounting plate longitudinally disposed on the side of the sleeve body opposite to the clamping block, and a connecting plate horizontally disposed between the mounting plate and the clamping block; the mounting plate is connected to the connecting plate; the end of the outer sleeve opposite to the clamping block is rotatably connected to the mounting plate; the upper end of the worm gear is rotatably connected to the connecting plate, and the lower end is horizontally rotatably connected to the clamping block through a connecting seat.

6. The novel automated clamping device for the polished rod of an oil pumping unit according to claim 5, characterized in that, The transmission unit includes a first gear located above the connecting plate and coaxially fixed with the worm gear, a second gear meshing with the first gear, and a reducer located below the connecting plate; the shaft of the second gear passes through the connecting plate and is connected to the output shaft of the reducer; the reducer and the sleeve body are located at opposite ends of the clamping block; the rotor of the motor is connected to the input shaft of the reducer.

7. The novel automated clamping device for the polished rod of an oil pumping unit according to claim 3, characterized in that, The sleeve body has an abutment portion at one end near the clamping block that fits against its side wall, and the outer diameter of the abutment portion is larger than the diameter of the receiving groove.

8. The novel automated clamping device for the polished rod of an oil pumping unit according to any one of claims 1-7, characterized in that, The novel automated clamping device for the oil pumping unit also includes a pose adjustment module for adjusting the horizontal position of the rod clamping module.

9. The novel automated clamping device for the polished rod of an oil pumping unit according to claim 8, characterized in that, The posture adjustment module is located below the optical rod clamping module.

10. The novel automated clamping device for the polished rod of an oil pumping unit according to claim 9, characterized in that, The posture adjustment module includes a horizontally arranged base plate, a mounting base parallel to the base plate, and a guide shaft unit that longitudinally connects the base plate and the mounting base; a pressure sensor is provided between the mounting base and the base plate.

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