A pipeline flow regulating device
By installing a drive assembly and hydraulic system on the outside of the pipeline, the driving adjustment block moves along the length of the pipeline, solving the problem of inconvenient adjustment of existing flow regulation devices, realizing convenient flow control, and improving work efficiency.
Patent Information
- Application Number
- CN202521383460.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-03
- Publication Date
- 2026-06-19
- Estimated Expiration
- 2035-07-03
AI Technical Summary
The existing flow regulation device is installed entirely in the pipeline, which is inconvenient for adjustment and affects work efficiency.
A drive assembly is installed on the outside of the installation pipe. The adjustment direction of the drive assembly is not parallel to the fluid flow direction. The drive assembly drives the adjustment block to move along the length of the pipe, controlling the depth of the smaller diameter end of the adjustment block inserted into the pipe. Combined with hydraulic oil and a reset component, flow regulation is achieved.
Without changing the fluid flow direction, it is easy to adjust the pipeline flow rate, reduce the adverse effects on work efficiency, and improve the adjustment efficiency.
Smart Images

Figure CN224381281U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of pipeline flow regulation, and in particular to a pipeline flow regulation device. Background Technology
[0002] Pipeline flow regulation refers to adjusting the flow rate within a pipeline to achieve the desired flow rate, typically achieved through a flow regulation device. In use, the flow regulation device is installed on the pipeline, and the cross-sectional area of the pipeline through which the fluid passes is adjusted according to requirements, thereby controlling the pipeline flow rate.
[0003] The flow regulating device is installed entirely inside the pipeline, making it inconvenient to adjust, which can negatively impact work efficiency. Utility Model Content
[0004] In order to facilitate the adjustment of pipeline flow and reduce the adverse effects on work efficiency, this application provides a pipeline flow adjustment device.
[0005] The pipeline flow regulating device provided in this application adopts the following technical solution:
[0006] A pipeline flow regulating device includes an installation pipe installed at the ends of two adjacent pipelines and connecting the two pipelines. The inner diameter of the installation pipe is larger than the inner diameter of the pipelines. An regulating block is provided in the installation pipe facing the interior of one of the pipelines. A sliding cylinder is slidably connected to the side of the regulating block near the other pipeline. The diameter of the regulating block gradually decreases towards the side away from the sliding cylinder. A connecting pipe is installed on the side of the sliding cylinder away from the regulating block. The end of the connecting pipe away from the sliding cylinder is bent and passes through the installation pipe. A driving assembly for driving the regulating block to move is installed at the end of the connecting pipe passing through the installation pipe. The driving direction of the driving assembly is not parallel to the fluid flow direction.
[0007] By adopting the above technical solution, the drive component is installed on the outside of the installation pipe, and the adjustment direction of the drive component is not parallel to the fluid flow direction. By changing the adjustment direction of the drive component, the effect of making it easy for the operator to drive the adjustment block to move along the length of the pipe without changing the fluid flow direction is achieved. This controls the depth of the smaller diameter end of the adjustment block inserted into the pipe, thereby controlling the pipe flow rate. This achieves the effect of facilitating the adjustment of the pipe flow rate and reducing the adverse impact on work efficiency.
[0008] Optionally, the connecting pipe communicates with the interior of the sliding cylinder, and both the connecting pipe and the sliding cylinder are filled with hydraulic oil to drive the adjustment block to move. The driving assembly includes a mounting plate sleeved and fixedly connected to the end of the connecting pipe. The connecting pipe communicates with the interior of the mounting plate. A fixing plate is provided on the side of the mounting plate away from the connecting pipe. A plurality of evenly distributed support rods supporting both are provided between the mounting plate and the fixing plate. A pushing member for pushing the hydraulic oil to squeeze the adjustment block and a resetting member for driving the adjustment block to reset are provided between the mounting plate and the fixing plate.
[0009] By adopting the above technical solution, the pushing component and the resetting component are installed on the frame formed by the mounting plate, support rod and fixing plate. When hydraulic oil fills the connecting pipe and sliding cylinder, and drives the adjusting block to move and insert into the corresponding pipe, the pushing component drives the hydraulic oil to move and squeeze the adjusting block, so that the adjusting block is gradually inserted into the pipe. At this time, the flow rate in the pipe decreases. When the flow rate in the pipe is increased, the resetting component drives the adjusting block to move closer to the connecting pipe and gradually disengage from the pipe, thereby controlling the flow rate in the pipe, achieving the effect of facilitating the adjustment of the flow rate in the pipe and reducing the adverse effects on work efficiency.
[0010] Optionally, the pusher includes a connecting cylinder with one end communicating with and fixedly connected to the mounting plate, wherein hydraulic oil in the connecting pipe can enter the connecting cylinder through the mounting plate, the other end of the connecting cylinder is fixedly connected to the fixed plate, a first piston is slidably connected inside the connecting cylinder, and a first screw with one end passing through the fixed plate and rotatably connected to the first piston is threadedly connected to the side of the fixed plate away from the mounting plate.
[0011] By adopting the above technical solution, the first screw is rotated and the first piston is driven to move along the connecting cylinder towards the connecting pipe, thereby driving the adjusting block to move away from the connecting pipe through hydraulic oil. This facilitates the gradual insertion of the adjusting block into the pipe, making it easier to adjust the pipe flow and reducing the adverse effects on work efficiency.
[0012] Optionally, the adjusting block is fixedly connected to a connecting rod whose end is inserted into the sliding cylinder and slidably connected to the sliding cylinder at one end, and a second piston is fixedly connected to one end of the connecting rod inserted into the sliding cylinder.
[0013] By adopting the above technical solution, when the hydraulic oil drives the adjusting block to slide, it pushes the second piston to move the connecting rod and the adjusting block away from the connecting pipe, thereby making it easier to control the depth of the adjusting block inserted into the pipe, and thus making it easier to adjust the pipe flow rate and reduce the adverse effects on work efficiency.
[0014] Optionally, the reset element includes a steel wire rope connecting the first piston and the second piston.
[0015] By adopting the above technical solution, when the driving adjustment block moves away from the connecting pipe, the wire rope can bend, so as not to affect the hydraulic oil pushing the second piston and the adjustment block to move. When the driving adjustment block is reset, the first screw is turned and the first piston is driven to move away from the sliding cylinder. At this time, the wire rope pulls the second piston and drives the connecting rod and the adjustment block to move closer to the connecting pipe, which facilitates the reset of the driving adjustment block and improves work efficiency.
[0016] Optionally, a pressure relief assembly is provided between the mounting plate and the fixing plate.
[0017] By adopting the above technical solution, when hydraulic oil expands and contracts due to temperature, the pressure relief component compensates for the change in hydraulic oil volume caused by temperature changes, reducing the possibility of difficulty in adjusting pipeline flow under temperature influence.
[0018] Optionally, the pressure relief assembly includes a fixed cylinder that communicates with and is fixedly connected to the mounting plate. One end of the fixed cylinder away from the mounting plate is fixedly connected to the mounting plate. A pressure relief piston is slidably connected in the fixed cylinder. A spring with one end fixedly connected to the pressure relief piston and always in a compressed state is provided inside the fixed cylinder near the mounting plate. The end of the spring away from the pressure relief piston abuts against a stop block located inside the fixed cylinder. A second screw is threaded through and threaded to the mounting plate, inserted into the fixed cylinder and fixedly connected to the drive piston. Hydraulic oil in the connecting pipe can enter the fixed cylinder through the mounting plate.
[0019] By adopting the above technical solution, the sliding cylinder, connecting pipe, and mounting plate are all filled with hydraulic oil, and the connecting cylinder and fixed cylinder are both connected to the inside of the mounting plate and filled with hydraulic oil. At this time, the spring and the pressure relief piston are fixed in the position in the fixed cylinder by the abutment block and the second screw. When the hydraulic oil undergoes volume change under the influence of temperature change, the spring deforms and drives the pressure relief piston to slide, thereby compensating for the volume change of the hydraulic oil and reducing the possibility that the pipeline flow is difficult to adjust due to temperature.
[0020] Optionally, the support rod has a thread along its length on the outer side, and the end of the support rod near the mounting plate is inserted into the mounting plate and threadedly connected to the mounting plate. The fixing plate has bolts corresponding to the support rod on the side away from the support rod, and the ends of the bolts pass through the fixing plate and are threadedly connected to the support rod.
[0021] By adopting the above technical solution, one end of the support rod is installed on the mounting plate by a threaded connection, and the other end is installed on the fixing plate by bolts, which facilitates installation and disassembly and improves work efficiency.
[0022] In summary, this application includes at least one of the following beneficial technical effects:
[0023] 1. The drive assembly is installed on the outside of the installation pipe, which makes it easy for the operator to drive the adjusting block to move along the length of the pipe. This allows the operator to control the depth of the smaller diameter end of the adjusting block inserted into the pipe, thereby controlling the flow rate and achieving the effect of facilitating the adjustment of the pipe flow rate and reducing the adverse effects on work efficiency.
[0024] 2. Rotate the first screw and drive the first piston to move along the connecting cylinder towards the connecting pipe, thereby driving the adjusting block to move away from the connecting pipe through hydraulic oil, so that the adjusting block can be gradually inserted into the pipe. When resetting, turn the first screw and drive the first piston to move away from the sliding cylinder. The steel wire rope pulls the second piston, which drives the connecting rod and the adjusting block to move towards the connecting pipe, thereby improving work efficiency.
[0025] 3. When hydraulic oil expands and contracts due to temperature changes, the pressure relief component compensates for the change in hydraulic oil volume caused by temperature variations, reducing the possibility of difficulty in adjusting pipeline flow under temperature influences. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the overall structure of the pipeline flow regulating device in the embodiments of this application.
[0027] Figure 2 This is a structural diagram illustrating the positional relationship between the adjustment block and the drive component in an embodiment of this application.
[0028] Figure 3 This is a structural schematic diagram illustrating the positional relationship between the adjusting block and the sliding cylinder in an embodiment of this application.
[0029] Figure 4 This is a structural diagram illustrating the positional relationship between the connecting pipe and the driving component in an embodiment of this application.
[0030] Explanation of reference numerals in the attached drawings: 1. Pipe; 2. Mounting pipe; 21. Mounting seat; 3. Adjusting block; 31. Sliding cylinder; 311. First sealing ring; 312. Second sealing ring; 313. Mounting shell; 32. Connecting rod; 33. Second piston; 4. Connecting pipe; 5. Drive assembly; 51. Mounting plate; 511. Cavity; 52. Support rod; 53. Fixing plate; 531. Countersunk groove; 532. Bolt; 54. Pushing component; 541. Connecting cylinder; 542. First piston; 543. First screw; 55. Steel wire rope; 6. Pressure relief assembly; 61. Fixing cylinder; 611. Observation port; 62. Pressure relief piston; 63. Spring; 64. Abutment block; 65. Second screw. Detailed Implementation
[0031] The present application will be further described in detail below with reference to the accompanying drawings.
[0032] This application discloses a pipeline flow regulating device. (Refer to...) Figure 1 and Figure 2 A pipeline flow regulating device includes an installation pipe 2 located between the ends of two adjacent pipelines 1 and connecting the two. The inner diameter of the installation pipe 2 is larger than the inner diameter of the pipelines 1, and both pipelines 1 are connected to the installation pipe 2. An adjusting block 3 is provided inside the installation pipe 2 and at one end near one of the pipelines 1, facing the interior of the corresponding pipeline 1. The adjusting block 3 is configured as a cone with a diameter that gradually decreases towards the corresponding pipeline 1.
[0033] Reference Figure 2 and Figure 3 The adjusting block 3 has a sliding cylinder 31 on the side away from its tip, which is arranged along the length of the mounting tube 2. The end of the sliding cylinder 31 near the adjusting block 3 is fitted with and threaded with a first sealing ring 311 that seals the end near the adjusting block 3. The end of the adjusting block 3 near the sliding cylinder 31 is fixedly connected to a connecting rod 32 coaxial with the adjusting block 3. The end of the connecting rod 32 away from the adjusting block 3 passes through the first sealing ring 311 and is slidably connected to the first sealing ring 311. The end of the connecting rod 32 inserted into the sliding cylinder 31 is fixedly connected to a second piston 33 with a diameter adapted to the inner diameter of the sliding cylinder 31. The second piston 33 is slidably connected to the sliding cylinder 31 along the length of the sliding cylinder 31.
[0034] A connecting pipe 4 is provided on the upper side of the sliding cylinder 31 at the end away from the adjusting block 3, located in the mounting pipe 2 and arranged along the length of the mounting pipe 2. A second sealing ring 312, which is threaded and sleeved on the end of the sliding cylinder 31 away from the adjusting block 3 and sealing the end away from the adjusting block 3, is also connected to the sliding cylinder 31. The end of the connecting pipe 4 away from the adjusting block 3 is bent downward and passes through the second sealing ring 312, communicating with the interior of the sliding cylinder 31. The connecting pipe 4 and the second sealing ring 312 are fixedly connected. Both the sliding cylinder 31 and the connecting pipe 4 are filled with hydraulic oil. The end of the connecting pipe 4 near the adjusting block 3 is bent upward and passes through the mounting pipe 2. A drive assembly 5 is provided on the upper side of the mounting pipe 2 and drives the second piston 33 to move. The driving direction of the drive assembly 5 is not parallel to the fluid flow direction.
[0035] The outer side of the sliding cylinder 31 is covered with a mounting shell 313 arranged along the length of the sliding cylinder 31. The first sealing ring 311, the second sealing ring 312 and the end of the connecting pipe 4 near the second sealing ring 312 are all located in the mounting shell 313. The connecting rod 32 passes through the mounting shell 313 and is slidably connected to the mounting shell 313. The connecting rod 32 can be completely inserted into the mounting shell 313, thereby protecting the connection points of the first sealing ring 311 and the second sealing ring 312 with the sliding cylinder 31, reducing the possibility of prolonged contact with water and damage.
[0036] When the regulating block 3 is slid by hydraulic oil, it pushes the second piston 33 to move the connecting rod 32 and the regulating block 3 away from the connecting pipe 4, thereby making it easier to control the depth of the regulating block 3 inserted into the pipe 1, and thus making it easier to adjust the flow rate of the pipe 1.
[0037] The drive assembly 5 is installed on the outside of the installation pipe 2, and the adjustment direction of the drive assembly 5 is not parallel to the fluid flow direction. By changing the adjustment direction of the drive assembly 5, the operator can easily drive the adjustment block 3 to move along the length of the pipe 1 without changing the fluid flow direction. This controls the depth of the tip of the adjustment block 3 inserted into the pipe 1, thereby controlling the flow rate of the pipe 1.
[0038] Reference Figure 1 , Figure 2 and Figure 4 The drive assembly 5 includes a horizontal mounting plate 51 located above the connecting pipe 4. A mounting base 21 is fixedly connected to the upper side of the mounting pipe 2, and the mounting plate 51 is inserted into the mounting base 21. A cavity 511 is formed inside the mounting plate 51. One end of the connecting pipe 4 near the adjusting block 3 passes through the mounting base 21 and the lower side of the mounting plate 51 and communicates with the cavity 511. A plurality of vertical support rods 52 are provided on the upper side of the mounting plate 51, which are evenly distributed circumferentially along the rotation axis of the mounting plate 51. In this embodiment, four support rods are provided. The outer side of each support rod 52 is provided with threads arranged along its own length direction. The lower end of each support rod 52 is inserted into the mounting plate 51 and threadedly connected to the mounting plate 51.
[0039] The upper end of the support rod 52 abuts against a fixing plate 53 that is horizontal and coincides with the projection of the mounting plate 51 in the vertical direction. The upper side of the fixing plate 53 is provided with countersunk grooves 531 that correspond one-to-one with the support rods 52. Each countersunk groove 531 is provided with a bolt 532 whose lower end passes through the fixing plate 53 and is inserted into and threadedly connected to the corresponding support rod 52. The upper side of the mounting plate 51 is provided with a pusher 54 that drives the second piston 33 to move away from the connecting pipe 4 and a resetter that drives the adjusting block 3 to reset.
[0040] Reference Figure 2 and Figure 4The pushing component 54 includes a vertical connecting cylinder 541 located on one side of the mounting plate 51. The lower end of the connecting cylinder 541 communicates with the cavity 511. Both the cavity 511 and the connecting cylinder 541 are filled with hydraulic oil. The upper end of the connecting cylinder 541 abuts against the lower side of the fixing plate 53. A horizontal first piston 542 with a diameter adapted to the inner diameter of the connecting cylinder 541 is slidably connected in the connecting cylinder 541. A vertical first screw 543 is threaded through and connected to the upper side of the fixing plate 53. The lower end of the first screw 543 is inserted into the connecting cylinder 541 and rotatably connected to the first piston 542. The resetting component includes a deformable steel wire rope 55 with one end fixedly connected to the lower side of the first piston 542. The other end of the steel wire rope 55 enters the sliding cylinder 31 through the connecting cylinder 541 and the connecting pipe 4 and is fixedly connected to the second piston 33.
[0041] Rotating the first screw 543 drives the first piston 542 to move along the connecting cylinder 541 towards the connecting pipe 4, thereby driving the adjusting block 3 to move away from the connecting pipe 4 through hydraulic oil, so that the adjusting block 3 can be gradually inserted into the pipe 1, and the flow rate of the pipe 1 can be adjusted. At this time, the wire rope 55 can be bent, so as not to affect the hydraulic oil from pushing the second piston 33 and the adjusting block 3 to move.
[0042] When the drive adjustment block 3 is reset, the first screw 543 is turned and the first piston 542 is driven to move away from the sliding cylinder 31. At this time, the wire rope 55 pulls the second piston 33, which drives the connecting rod 32 and the adjustment block 3 to move closer to the connecting pipe 4, so as to facilitate the reset of the drive adjustment block 3.
[0043] One end of the support rod 52 is installed on the mounting plate 51 by a threaded connection, and the other end is installed on the fixing plate 53 by a bolt 532, which facilitates installation and disassembly and improves work efficiency.
[0044] Reference Figure 1 , Figure 2 and Figure 4 A pressure relief assembly 6 is provided on the upper side of the mounting plate 51, away from the connecting cylinder 541. The pressure relief assembly 6 includes a vertical fixed cylinder 61 whose lower end communicates with the cavity 511. A pressure relief piston 62 with a diameter adapted to the inner diameter of the fixed cylinder 61 is inserted into and slidably connected to the lower side of the fixed cylinder 61. A vertical spring 63, which is always in a compressed state, is fixedly connected to the upper side of the pressure relief piston 62. An abutment block 64 with a diameter adapted to the inner diameter of the fixed cylinder 61 is abutted to the upper side of the spring 63. A vertical second screw 65 is threaded through and connected to the upper side of the fixing plate 53. The lower end of the second screw 65 is inserted into the fixed cylinder 61 and fixedly connected to the abutment block 64. The fixed cylinder 61 is filled with hydraulic oil, which abuts against the lower side of the pressure relief piston 62. An observation port 611 for observing the state of the spring 63 is opened on one side of the upper end of the fixed cylinder 61.
[0045] The sliding cylinder 31, connecting pipe 4, and mounting plate 51 are all filled with hydraulic oil, and the connecting cylinder 541 and the fixed cylinder 61 are both connected to the interior of the mounting plate 51 and filled with hydraulic oil. At this time, the spring 63 and the pressure relief piston 62 are fixed in the position of the fixed cylinder 61 by the abutment block 64 and the second screw 65. When the hydraulic oil undergoes a volume change due to temperature changes, the spring 63 deforms and drives the pressure relief piston 62 to slide, thereby compensating for the volume change of the hydraulic oil and reducing the possibility that the flow rate of the pipeline 1 is difficult to adjust due to temperature.
[0046] The implementation principle of a pipeline flow regulating device according to an embodiment of this application is as follows: the first piston 542 is driven to move along the connecting cylinder 541 towards the connecting pipe 4, thereby driving the regulating block 3 away from the connecting pipe 4 through hydraulic oil, so that the regulating block 3 can be gradually inserted into the pipeline 1. At this time, the wire rope 55 does not affect the hydraulic oil from pushing the second piston 33 and the regulating block 3 to move. When resetting, the first piston 542 is driven to move away from the sliding cylinder 31. At this time, the wire rope 55 pulls the second piston 33, which drives the connecting rod 32 and the regulating block 3 to move towards the connecting pipe 4, so as to drive the regulating block 3 to reset.
[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A conduit flow regulating device, characterized by: The device includes an installation pipe (2) installed at the ends of two adjacent pipes (1) and connecting the two. The inner diameter of the installation pipe (2) is larger than the inner diameter of the pipe (1). An adjustment block (3) is provided in the installation pipe (2) facing the interior of one of the pipes (1). A sliding cylinder (31) is slidably connected to the side of the adjustment block (3) near the other pipe (1). The diameter of the adjustment block (3) gradually decreases towards the side away from the sliding cylinder (31). A connecting pipe (4) is installed on the side of the sliding cylinder (31) away from the adjustment block (3). One end of the connecting pipe (4) away from the sliding cylinder (31) is bent and passes through the installation pipe (2). A driving assembly (5) for driving the adjustment block (3) to move is installed at one end of the connecting pipe (4) passing through the installation pipe (2). The driving direction of the driving assembly (5) is not parallel to the fluid flow direction.
2. A conduit flow regulating device according to claim 1, wherein: The connecting pipe (4) is connected to the interior of the sliding cylinder (31). Both the connecting pipe (4) and the sliding cylinder (31) are filled with hydraulic oil to drive the adjustment block (3) to move. The driving assembly (5) includes a mounting plate (51) sleeved and fixedly connected to the end of the connecting pipe (4). The connecting pipe (4) is connected to the interior of the mounting plate (51). A fixing plate (53) is provided on the side of the mounting plate (51) away from the connecting pipe (4). A plurality of evenly distributed support rods (52) supporting both are provided between the mounting plate (51) and the fixing plate (53). A pusher (54) for pushing the hydraulic oil to squeeze the adjustment block (3) and a resetter for driving the adjustment block (3) to reset are provided between the mounting plate (51) and the fixing plate (53).
3. A conduit flow regulating device according to claim 2, wherein: The pusher (54) includes a connecting cylinder (541) with one end communicating with the interior of the mounting plate (51) and fixedly connected to the mounting plate (51). The hydraulic oil in the connecting pipe (4) can enter the connecting cylinder (541) through the mounting plate (51). The other end of the connecting cylinder (541) is fixedly connected to the fixing plate (53). A first piston (542) is slidably connected inside the connecting cylinder (541). A first screw (543) is threadedly connected to the side of the fixing plate (53) away from the mounting plate (51), with one end passing through the fixing plate (53) and rotatably connected to the first piston (542).
4. A pipeline flow regulating device according to claim 3, characterized in that: The adjusting block (3) has a connecting rod (32) whose end is inserted into the sliding cylinder (31) and is slidably connected to the sliding cylinder (31) at one end. The connecting rod (32) is fixedly connected to a second piston (33) at one end inserted into the sliding cylinder (31).
5. A pipeline flow regulating device according to claim 4, characterized in that: The reset component includes a steel wire rope (55) connecting the first piston (542) and the second piston (33).
6. A pipeline flow regulating device according to claim 5, characterized in that: A pressure relief assembly (6) is provided between the mounting plate (51) and the fixing plate (53).
7. A pipeline flow regulating device according to claim 6, characterized in that: The pressure relief assembly (6) includes a fixed cylinder (61) that communicates with and is fixedly connected to the mounting plate (51). One end of the fixed cylinder (61) away from the mounting plate (51) is fixedly connected to the fixed plate (53). A pressure relief piston (62) is slidably connected in the fixed cylinder (61). A spring (63) with one end fixedly connected to the pressure relief piston (62) and always in a compressed state is provided inside the fixed cylinder (61) near the fixed plate (53). The end of the spring (63) away from the pressure relief piston (62) abuts against a stop block (64) located inside the fixed cylinder (61). A second screw (65) is threaded through and threaded onto the fixed plate (53), inserted into the fixed cylinder (61) and fixedly connected to the stop block (64). Hydraulic oil in the connecting pipe (4) can enter the fixed cylinder (61) through the mounting plate (51).
8. A pipeline flow regulating device according to claim 2, characterized in that: The support rod (52) has a thread along its length on the outside. The end of the support rod (52) near the mounting plate (51) is inserted into the mounting plate (51) and threadedly connected to the mounting plate (51). The fixing plate (53) away from the support rod (52) has bolts (532) corresponding to the support rod (52). The ends of the bolts (532) pass through the fixing plate (53) and are threadedly connected to the support rod (52).