Integrated device and method for assembling and disassembling throttling nozzle

Abstract

The invention discloses an integrated device and method for mounting and dismounting a throttling nozzle, and belongs to the technical field of mechanical tools.The integrated device comprises a pull rod, a rod connector, a supporting device and a driving device; the pull rod and the rod connector are coaxially and detachably connected, a connecting structure used for being connected with an expansion ring or an outer lining is arranged at the end of the rod connector, the supporting device is in sliding connection with the rod connector and guides the moving direction of the rod connector, and one end of the supporting device abuts against the end of a pipeline used for installing a throttling nozzle. And the driving device is connected with the pull rod and drives the rod connector to move in the axial direction. According to the integrated device, rod connectors of different models are replaced, the supporting device is combined, the working length of the integrated device is changed, a constant force application method is adopted, and the oil nozzle mounting and dismounting quality is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical tooling, and in particular to an integrated device and method for installing and disassembling a throttle nozzle. Background Art

[0002] The throttle hydraulic element acts as a fixed throttle in the hydraulic circuit to limit pressure mutations and reduce flow. Figure 1 The figure is the structural diagram of the throttle nozzle, which mainly includes an expansion ring and an outer sleeve. The installation process and working principle are as follows: first, the outer sleeve is installed at a predetermined depth in the pipeline and positioned using a stop ring in the pipeline. Then, the expansion ring is installed into the inner hole of the outer sleeve and pressure is applied to the expansion ring to form an interference fit between the expansion ring and the outer sleeve. At the same time, the outer diameter of the ring groove on the outer sleeve is enlarged to form an interference fit with the throttle nozzle mounting hole, which has a large friction force. When the fluid passes through the throttle hole, the pressure difference acting on the throttle nozzle cannot cause it to move.

[0003] During the assembly and commissioning of hydraulic products, the throttle nozzle needs to be adjusted to match the hydraulic circuit. Therefore, the throttle nozzle is repeatedly disassembled and assembled. Generally, it is installed by manual knocking or disassembled by sliding puller. During the installation and disassembly process, the tool working thread section often "breaks", and even the nozzle expansion ring and outer bushing thread are damaged and cannot be removed. Generally, the nozzle with damaged thread needs to be completely disassembled and removed by boring in the machining center. The secondary alignment processing of the shell is high-risk, large-volume, time-consuming, and easy to damage the slender hole of the aluminum shell. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides an integrated device and method for installing and removing a throttle nozzle, so as to realize rapid and lossless installation and removal of the throttle nozzle.

[0005] The present invention is achieved through the following technical solutions: An integrated device for installing and removing a throttle nozzle comprises a pull rod, a rod joint, a supporting device and a driving device; The pull rod is coaxially and detachably connected to the rod joint, and a connecting structure for connecting an expansion ring or an outer bushing is provided at the end of the rod joint. The supporting device is slidably connected to the rod joint and guides the moving direction of the rod joint. One end of the supporting device abuts against the end of the pipe for installing the throttle nozzle and limits the installation depth of the throttle nozzle. The driving device is connected to the pull rod and drives the rod joint to move axially.

[0006] Preferably, the pull rod and the rod joint are connected by thread or by clamping.

[0007] Preferably, the support assembly includes a plurality of adjustable top blocks, and the support device is sleeved on the rod joint.

[0008] Preferably, two adjacent adjustable top blocks are connected via a positioning structure.

[0009] Preferably, the positioning structure includes a positioning groove and a positioning block matching therewith, the positioning groove and the positioning block are respectively arranged at both ends of the adjusting top block, and the positioning block of one adjusting top block is installed in the positioning groove of the adjacent adjusting top block, so that the two adjacent adjusting top blocks form an interlocking structure.

[0010] Preferably, a U-shaped groove is provided on the adjusting top block, and the adjusting top block is plugged into the rod joint through the U-shaped groove.

[0011] Preferably, the driving device is a nut, and the nut is connected to the pull rod through a thread.

[0012] Preferably, the connection structure at the end of the rod joint is an external thread connected to an expansion ring or an outer bushing.

[0013] A method for installing and removing an integrated device of a throttle nozzle, wherein the throttle nozzle removal method is as follows: Determine the height of the support device according to the installation depth of the expansion ring, and install the support device on the rod joint; Insert the rod joint into the pipe and connect it with the expansion ring. Rotate the driving device to make it abut against the supporting device. Then slowly rotate the nut. The pull rod will move axially and generate pulling force on the expansion ring, so that the expansion ring is separated from the outer bushing.

[0014] Replace the rod joint that matches the outer bushing, connect the rod joint to the outer bushing, and remove the outer bushing from the pipe by pulling the rod.

[0015] Preferably, the installation method of the throttle nozzle is as follows: Connecting the rod joint to the tie rod, connecting the outer bushing to the rod joint, and then installing the outer bushing to a predetermined position of the pipeline through the rod joint; Replace the rod joint that matches the expansion ring, determine the height of the support device according to the installation depth of the outer bushing, and install the support device on the rod joint; Determine the distance between the drive device and the upper block according to the matching depth of the expansion ring and the outer bushing; Pressure is applied to the end of the pull rod, and the expansion ring gradually enters the outer bushing until the drive device abuts against the upper top block.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects: The present invention provides an integrated device for installing and disassembling a throttle nozzle, wherein a supporting device is arranged on a rod joint, and a driving device is arranged on a pull rod. The supporting device serves as a guiding device of the rod joint, and guides during the installation and removal of the expansion sleeve to avoid axial deviation of the rod and cause breakage of the end of the rod joint. At the same time, the supporting device and the driving device are combined to form a control component for the installation depth of the throttle nozzle, which solves the problem that the expansion ring continues to be damaged by pressure and impact after reaching the installation depth. During the disassembly process, the driving device drives the pull rod to move slowly and stably along the axial direction to separate the expansion ring from the outer bushing to avoid damage to the throttle nozzle. The integrated device has a simple structure and is easy to operate, and can achieve fast and lossless installation and disassembly of the throttle nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 is a structural diagram of the integrated device of the present invention; Figure 2 It is a schematic diagram of the connection between the integrated device of the present invention and the throttle nozzle; Figure 3 for Figure 2 A partial enlarged view of Figure 4 It is a schematic diagram of the connection between the joint and the expansion ring of the present invention; Figure 5 It is the assembly diagram of the top block of the present invention; Figure 6 A front view of the top block for adjusting the present invention; Figure 7 A cross-sectional view of the top block of the present invention; Figure 8 It is a cross-sectional view of the top block of the present invention; Fig. 9 is a cross-sectional view of the lower top block of the present invention; Fig.10 It is a structural diagram of the pull rod of the present invention.

[0019] In the figure: 1, rod joint; 5, pull rod; 6, lower top block; 7, adjusting top block; 8, upper top block; 9, nut; 100, throttle nozzle; 200, pipe; 300, outer bushing; 400, expansion ring. DETAILED DESCRIPTION In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0021] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0022] In the description of the embodiments of the present application, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invented product is usually placed when used. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0023] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of the embodiments of the present application, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0025] See also Figure 1-8 , an integrated device for installing and removing a throttle nozzle, comprising a rod joint 1, a supporting device and a driving device; The end of the rod joint is provided with a connecting structure for connecting an expansion ring. The supporting device is slidably connected to the rod joint and guides the moving direction of the rod joint. One end of the supporting device abuts against the end of the pipe 200 for installing the throttle nozzle 100 and limits the installation depth of the throttle nozzle. The driving device is connected to the rod joint to drive the rod joint to move axially.

[0026] The integrated device of the throttle nozzle adopts a supporting device and a driving device as an installation depth limiting device of the throttle nozzle. At the same time, the supporting device serves as a guiding device of the rod joint. During the installation process, the rod joint is guided so that the expansion ring 400 is installed in the outer sleeve 300 in a coaxial state. During the disassembly process, the driving device drives the rod joint to move axially to separate the expansion ring from the outer sleeve, so as to improve the installation and disassembly efficiency of the outer sleeve and the expansion ring.

[0027] In some embodiments, due to the different models of throttle nozzles, in order to facilitate the disassembly of different models of throttle nozzles, the other end of the rod joint is coaxially and detachably connected to a pull rod 5. By installing different rod joints on the pull rod, throttle nozzles with different signals can be installed and disassembled, thereby improving the applicability of the entire integrated device.

[0028] The pull rod and the rod joint are connected by threaded connection, clamping connection or quick release structure to achieve detachable connection between the pull rod and the rod joint.

[0029] In this embodiment, the pull rod and the rod joint are connected by threads, a connection structure of an expansion ring is set at one end of the rod joint, and an external thread is set at the other end. The end of the pull rod is set with an internal thread. The pull rod and the rod joint are connected by threads to form a quick-release structure.

[0030] In some embodiments, the connection structure at the end of the rod joint is an external thread that matches the expansion ring, and the rod joint is connected to the expansion ring 400 through the external thread.

[0031] The external thread models at the front ends of different rod joints are different. At the same time, the external thread can be connected to the outer sleeve 300 of another throttle nozzle, that is, the same rod joint can be connected to the expansion ring of one throttle nozzle and the outer sleeve of another throttle nozzle at the same time; this is because the threads of the outer sleeve of one throttle nozzle and the expansion ring of the other throttle nozzle are the same in the two throttle nozzles, which can minimize the number of rod joints. By cooperating with two rod joints of different models, the installation and disassembly of the outer sleeve and expansion ring of the same throttle nozzle can be achieved.

[0032] In some embodiments, the supporting device is sleeved on the rod joint to achieve axial guidance of the rod joint. During the installation of the expansion ring, the fitting length between the expansion ring and the outer sleeve is positioned by the distance between the driving device and the supporting device. At the same time, a thrust is applied to the pull rod to gradually form an interference fit between the expansion ring and the outer sleeve. The outer sleeve is deformed and comes into close contact with the pipe. Since the supporting device can guide the rod joint, the rod joint deflects during the force application process, resulting in the problem of breakage of the connecting structure and the rod joint. At the same time, the installation accuracy of the expansion ring and the outer sleeve is also guaranteed.

[0033] In some embodiments, the supporting device includes a plurality of adjusting top blocks 7, and a positioning structure is provided between two adjacent adjusting top blocks so that the plurality of adjusting top blocks are coaxially arranged. The pre-installation depth of the expansion ring can be controlled by controlling the number of adjusting top blocks, and the pre-installation depth is the distance from the contact position between the expansion ring and the outer lining to the pipe mouth; the distance between the driving device and the top of the supporting device is determined according to the length of the matching area between the expansion ring and the outer sleeve, so that the installation depth of the expansion ring and the outer sleeve can be controlled to avoid damage to the outer sleeve during the installation process.

[0034] The positioning structure includes a positioning groove and a matching positioning block, the positioning groove and the positioning block are respectively arranged at both ends of the adjusting top block, and during installation, the positioning block of one adjusting top block is installed in the positioning groove of the adjacent adjusting top block, so that the two adjacent adjusting top blocks have an interlocking structure.

[0035] A plurality of adjustable top blocks form a top block group, and an upper top block 8 and a lower top block 9 are respectively provided at both ends of the top block group. The upper top block 8 and the lower top block 9 are located at one end close to the driving device, and the lower top block is located at one end close to the connecting structure. The end faces of the upper top block 8 and the lower top block 9 away from the top block group are flat.

[0036] In another embodiment, a U-shaped groove is provided on the adjusting top block, and the adjusting top block is plugged into the rod joint through the U-shaped groove to realize the initial disassembly and assembly of the adjusting top block, and also facilitate the adjustment of the height of the entire top block group.

[0037] In another embodiment, the driving device is a nut 9, which is threadedly connected to the pull rod. During the disassembly process, the nut is rotated to make the screw rod move axially, thereby driving the expansion ring to move and separate from the outer bushing. During the installation process, the distance between the nut and the upper top block is controlled. When the nut contacts the upper top block, the expansion ring and the outer bushing are installed in place.

[0038] The following is an explanation of the method of using the integrated device for installing and removing the throttle nozzle, including the following process: 1. The installation process of the throttle nozzle.

[0039] Rotate the corresponding rod joint according to the internal thread diameter of the outer bushing, connect the selected rod joint with the pull rod, connect the outer bushing with the rod joint, and then install the outer bushing into the pipe 200 through the rod joint. A corresponding annular stop shoulder is provided in the pipe. When the outer bushing abuts against the annular stop shoulder, that is, the outer bushing is installed in place, rotate the rod joint to separate it from the outer bushing.

[0040] Rotate the corresponding rod joint according to the internal thread diameter of the expansion ring, replace the selected rod joint on the tension rod, determine the height of the support device according to the installation depth of the outer bushing, select the number and specifications of the adjustable top blocks according to the height to form a support device, plug the support device onto the rod joint, and fix the adjustable top block group through the upper top block and the lower top block.

[0041] The distance between the driving device and the upper top block is determined according to the matching depth of the expansion ring and the outer bushing, and the driving device is rotated to separate it from the upper top block.

[0042] Finally, pressure is applied to the end of the pull rod, and the expansion ring gradually enters the outer bushing until the driving device abuts against the upper top block, causing the outer bushing to expand and deform to form a stable connection with the pipeline.

[0043] 2. The disassembly process of the throttle nozzle.

[0044] Select the corresponding rod joint according to the internal thread diameter of the expansion ring; The height of the support device is determined according to the installation depth of the expansion ring, and the number and specifications of the adjustable top blocks are selected according to the height to form the support device, which is plugged into the rod joint, and the adjustable top block group is fixed by the upper top block and the lower top block.

[0045] Insert the rod joint into the pipe and connect it with the expansion ring. Rotate the driving device to make it abut against the upper top block. Then slowly rotate the nut. The pull rod will move axially and generate pulling force on the expansion ring, so that the expansion ring is separated from the outer bushing.

[0046] It should be noted that when the expansion ring is separated from the outer bushing, the outer bushing recovers its deformation, and at this time, the friction between the pipe and the outer bushing is reduced.

[0047] Replace the rod joint, which matches the outer bushing, the rod joint is connected to the outer bushing, and the outer bushing is removed from the pipe by pulling the rod.

[0048] The above contents are only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. An integrated device for installing and removing a throttle nozzle, characterized in that: It includes a tie rod, a rod joint, a supporting device and a driving device; The pull rod is coaxially and detachably connected to the rod joint, and a connecting structure for connecting an expansion ring or an outer bushing is provided at the end of the rod joint. The supporting device is slidably connected to the rod joint and guides the moving direction of the rod joint. One end of the supporting device abuts against the end of the pipe for installing the throttle nozzle and limits the installation depth of the throttle nozzle. The driving device is connected to the pull rod and drives the rod joint to move axially.

2. The integrated device for installing and removing a throttle nozzle according to claim 1, characterized in that: The pull rod and the rod joint are connected by thread or by clamping.

3. The integrated device for installing and removing a throttle nozzle according to claim 1, characterized in that: The support assembly comprises a plurality of adjustable top blocks, and the support device is sleeved on the rod joint.

4. The integrated device for installing and removing a throttle nozzle according to claim 3, characterized in that: Two adjacent adjustable top blocks are connected via a positioning structure.

5. The integrated device for installing and removing a throttle nozzle according to claim 4, characterized in that: The positioning structure includes a positioning groove and a matching positioning block, the positioning groove and the positioning block are respectively arranged at both ends of the adjusting top block, and the positioning block of one adjusting top block is installed in the positioning groove of the adjacent adjusting top block, so that the two adjacent adjusting top blocks form an interlocking structure.

6. The integrated device for installing and removing a throttle nozzle according to claim 4, characterized in that: The adjusting top block is provided with a U-shaped groove, and the adjusting top block is plugged into the rod joint through the U-shaped groove.

7. The integrated device for installing and removing a throttle nozzle according to claim 1, characterized in that: The driving device is a nut, and the nut is connected to the pull rod through threads.

8. The integrated device for installing and removing a throttle nozzle according to claim 1, characterized in that: The connection structure at the end of the rod joint is an external thread connected to an expansion ring or an external bushing.

9. A method for installing and removing an integrated device for a throttle nozzle according to any one of claims 1 to 8, characterized in that: The disassembly method of the throttle nozzle is as follows: Determine the height of the support device according to the installation depth of the expansion ring, and install the support device on the rod joint; Insert the rod joint into the pipe and connect it with the expansion ring. Rotate the driving device to make it contact with the supporting device. Then slowly rotate the nut. The pull rod will move axially and exert tension on the expansion ring, so that the expansion ring is separated from the outer bushing. Replace the rod joint that matches the outer bushing, connect the rod joint to the outer bushing, and remove the outer bushing from the pipe by pulling the rod.

10. The method for installing and removing an integrated device of a throttle nozzle according to claim 9, characterized in that: The installation method of the throttle nozzle is as follows: Connecting the rod joint to the tie rod, connecting the outer bushing to the rod joint, and then installing the outer bushing to a predetermined position of the pipeline through the rod joint; Replace the rod joint that matches the expansion ring, determine the height of the support device according to the installation depth of the outer bushing, and install the support device on the rod joint; Determine the distance between the drive device and the upper block according to the matching depth of the expansion ring and the outer bushing; Pressure is applied to the end of the pull rod, and the expansion ring gradually enters the outer bushing until the drive device abuts against the upper top block.

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