Portable sleeve installation device

Abstract

The invention provides a portable casing pipe mounting device. The portable casing pipe mounting device comprises a mounting frame, a mounting base and a mounting base, the two sleeve expansion pieces are located on the two sides of the mounting frame respectively and rotatably connected with the mounting frame, the two sleeve expansion pieces are each provided with a connecting part capable of being connected with an opening of the sleeve, and the connecting parts have the connecting state of being connected with the sleeve and the separating state of being separated from the sleeve; the two ends of the elastic piece are connected with the two casing pipe expansion pieces respectively, and under the condition that the two casing pipe expansion pieces are connected with the casing pipe, the elastic piece applies elastic force to the two casing pipe expansion pieces to enable the two connecting parts to be away from each other so as to expand the opening of the casing pipe; and the upper end of the insulating operation rod is connected with the mounting rack. Through the technical scheme provided by the invention, the problems of low sleeve mounting efficiency and potential safety hazards in the prior art can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power devices, and in particular to a convenient bushing installation device. Background Art

[0002] Installing bushings is a common task at grass-roots power supply stations. For example, bushings need to be installed to solve the problem of three-line hanging. Anti-collision marking bushings are needed when the line crosses a highway. Bushings are also needed when the line passes through user windows, balconies, etc.

[0003] In conventional casing work, it is usually necessary to wear a safety belt and climb a ladder to install the casing. If the casing line is not at a safe distance from the operation, it is necessary to shut down the power supply for installation. If the exposed point of the wire is between two poles, it is necessary to shut down the power supply and then climb up to install the protective casing. Specifically, one side of the casing has an opening, and the opening size of the casing is enlarged to allow the wire to pass through the opening and into the casing.

[0004] This conventional practice brings many inconveniences to grassroots power supply stations. First, power outage may be required during casing installation, affecting power supply reliability. Second, casing installation involves many steps, heavy workload and low work efficiency. Third, there is a certain risk of falling from a height or electric shock. Summary of the invention

[0005] The present invention provides a convenient sleeve installation device to solve the problems of low efficiency and potential safety hazards in the installation of sleeves in the related art.

[0006] The present invention provides a convenient sleeve installation device, which comprises: a mounting frame; two sleeve expansion pieces, which are respectively located at two sides of the mounting frame and rotatably connected to the mounting frame, and the two sleeve expansion pieces are both provided with a connecting part that can be connected to the mouth of the sleeve, and the connecting part has a connected state connected to the sleeve and a separated state separated from the sleeve; an elastic piece, the two ends of the elastic piece are respectively connected to the two sleeve expansion pieces, and when the two sleeve expansion pieces are both connected to the sleeve, the elastic piece applies an elastic force to the two sleeve expansion pieces to make the two connecting parts move away from each other so as to expand the opening of the sleeve; an insulating operating rod, the upper end of the insulating operating rod is connected to the mounting frame.

[0007] Furthermore, the sleeve expander includes: an expansion plate, a connecting portion is arranged on the expansion plate; a swing rod, a first end of the swing rod is connected to the expansion plate, the swing rod is rotatably connected to the mounting frame through a hinge portion, and both ends of the elastic member are respectively connected to the second ends of the swing rods of the two sleeve expanders.

[0008] Furthermore, the connecting portion is specifically a flange structure arranged at one end of the expansion plate away from the mounting frame, the inner wall of the flange structure forms a limiting groove for inserting the mouth of the sleeve, and the notch of the limiting groove is arranged toward the mounting frame.

[0009] Furthermore, a hinged portion rotatably connected to the mounting frame is provided in the middle of the swing rod, and both ends of the elastic member are respectively connected to the second ends of the swing rods of the two sleeve expansion members.

[0010] Furthermore, the hinged portion is specifically a hinged cylinder, and the hinged cylinder is rotatably sleeved on the mounting frame.

[0011] Furthermore, the elastic member is specifically a spring.

[0012] Furthermore, the sleeve expansion piece includes at least two swing rods, the convenient sleeve installation device includes at least two elastic members, the at least two swing rods and the at least two elastic members are arranged in one-to-one correspondence, and the at least two swing rods are arranged at intervals along the length direction of the expansion plate.

[0013] Furthermore, the portable bushing installation device also includes a connecting piece, and the mounting frame is connected to the insulating operating rod via the connecting piece.

[0014] Furthermore, the connecting piece is specifically a connecting tube, the inner wall of the connecting tube is provided with an internal thread, the upper end of the insulating operating rod is provided with an external thread, and the upper end of the insulating operating rod is inserted into the connecting tube and threadedly connected to the connecting tube.

[0015] Furthermore, the insulating operating rod is a retractable structure and can be adjusted according to actual working height requirements.

[0016] By applying the technical solution of the present invention, the portable sleeve installation device includes a mounting frame, two sleeve expansion pieces, an elastic piece and an insulating operating rod. When the sleeve needs to be installed, first, the connecting parts of the two sleeve expansion pieces are connected to the two sides of the mouth of the sleeve respectively. At this time, the elastic piece applies an elastic force to the two sleeve expansion pieces to make the two connecting parts move away from each other to expand the opening of the sleeve, so that the wire can be inserted into the sleeve through the opening. Then, after the wire is inserted into the sleeve, the connecting part is switched from a connection state connected to the sleeve to a separation state separated from the sleeve. Under the action of the elastic piece, the two connecting parts move away from each other, that is, the two sleeve expansion pieces are separated from the sleeve respectively, and the portable sleeve installation device can be removed from the sleeve. With the above structure, there is no need for the operator to wear a safety belt to climb the ladder to install the sleeve, and there is no need to shut down the power, which can improve the efficiency of installing the sleeve. In addition, since the upper end of the insulating operating rod is connected to the mounting frame, the portable sleeve installation device can be lifted by the insulating operating rod, and there is no risk of falling from a high altitude or electric shock, which can improve safety. Therefore, the use of the convenient sleeve installation device can solve the problems of low efficiency and potential safety hazards in the installation of sleeves in the related art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 A schematic structural diagram of a portable casing installation device provided according to an embodiment of the present invention is shown.

[0019] The above drawings include the following reference numerals:

[0020] 10. Mounting frame;

[0021] 20. Sleeve expansion piece; 21. Connecting part; 211. Flanging structure; 212. Limiting groove; 22. Expansion plate; 23. Swinging rod; 231. Articulated part; 2311. Articulated cylinder;

[0022] 30. Casing;

[0023] 40. elastic member; 41. spring;

[0024] 50. Insulated operating rod;

[0025] 60. Connecting piece; 61. Connecting tube;

[0026] 70. Electrical wires. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments of the present invention are within the scope of protection of the present invention.

[0028] like Figure 1As shown, an embodiment of the present invention provides a convenient bushing installation device, which includes a mounting frame 10, two bushing expansion pieces 20, an elastic piece 40 and an insulating operating rod 50. The two bushing expansion pieces 20 are respectively located on both sides of the mounting frame 10 and are rotatably connected to the mounting frame 10. The two bushing expansion pieces 20 are both provided with a connecting portion 21 that can be connected to the mouth of the bushing 30. The connecting portion 21 has a connection state connected to the bushing 30 and a separation state separated from the bushing 30. Both ends of the elastic piece 40 are respectively connected to the two bushing expansion pieces 20. When the two bushing expansion pieces 20 are both connected to the bushing 30, the elastic piece 40 applies an elastic force to the two bushing expansion pieces 20 to move the two connecting portions 21 away from each other so as to expand the opening of the bushing 30. The upper end of the insulating operating rod 50 is connected to the mounting frame 10.

[0029] When the portable sleeve installation device provided by the present embodiment is used, when the sleeve needs to be installed, first, the connection parts 21 of the two sleeve expansion pieces 20 are connected to the two sides of the mouth of the sleeve 30 respectively. At this time, the elastic member 40 applies an elastic force to the two sleeve expansion pieces 20 to make the two connection parts 21 move away from each other to expand the opening of the sleeve 30, so that the wire 70 can be inserted into the sleeve 30 through the opening. Then, after the wire 70 is inserted into the sleeve 30, the connection part 21 is switched from the connection state connected to the sleeve 30 to the separation state separated from the sleeve 30. Under the action of the elastic member 40, the two connection parts 21 move away from each other, that is, the two sleeve expansion pieces 20 are separated from the sleeve 30 respectively, and the portable sleeve installation device can be removed from the sleeve 30. With the above structure, there is no need for the operator to wear a safety belt and climb the ladder to install the sleeve, and there is no need to shut down the power, which can improve the efficiency of installing the sleeve. Furthermore, since the upper end of the insulating operating rod 50 is connected to the mounting frame 10, the portable bushing installation device can be lifted by the insulating operating rod 50, without the risk of falling from a high altitude or electric shock, thereby improving safety. Therefore, the portable bushing installation device can solve the problems of low efficiency and potential safety hazards in the installation of bushings in the related art.

[0030] Through this design, the operator can easily expand and fix the casing 30 at the required position, which greatly saves installation time and is particularly suitable for power line maintenance and inspection work that requires frequent installation and removal of the casing 30. In actual use, the device can significantly improve the efficiency of installing the casing 30 and reduce manual operation errors, especially in environments where a large number of wires 70 need to be handled, such as in the construction or renovation projects of large substations, where its role is more prominent and can help power workers quickly locate and install the casing 30, effectively preventing the wires 70 from being damaged in complex environments.

[0031] like Figure 1As shown, the casing expansion member 20 includes an expansion plate 22 and a swing rod 23, the connection portion 21 is disposed on the expansion plate 22, the first end of the swing rod 23 is connected to the expansion plate 22, the swing rod 23 is rotatably connected to the mounting frame 10 via a hinge portion 231, and the two ends of the elastic member 40 are respectively connected to the second ends of the swing rods 23 of the two casing expansion members 20. This structure can not only effectively expand the casing 30, but also automatically shrink when not in use, reducing space occupation, and is very suitable for use in a narrow working environment.

[0032] In the wiring of electric wires inside power facilities, the space is usually very small. The sleeve expander 20 of this design can automatically shrink back to its original position after expanding the sleeve 30, avoiding the inconvenience of operation in a small space, while also reducing interference with surrounding equipment and improving construction safety and efficiency.

[0033] like Figure 1 As shown, the connection portion 21 is specifically a flange structure 211 disposed at one end of the expansion plate 22 away from the mounting frame 10, and the inner wall of the flange structure 211 forms a limiting groove 212 for inserting the mouth of the sleeve 30, and the notch of the limiting groove 212 is disposed toward the mounting frame 10. Such a flange structure 211 can ensure the stability of the sleeve 30 during expansion, prevent the sleeve 30 from slipping during operation, improve the accuracy and safety of installation, and can effectively avoid accidents caused by improper operation, especially in the maintenance of high-voltage power facilities.

[0034] Furthermore, by inserting the mouth of the sleeve 30 into the limiting groove 212 , on the one hand, it has the advantage of firm limiting, and on the other hand, it is convenient to separate the sleeve 30 from the sleeve expansion piece 20 .

[0035] In the maintenance of high-voltage power facilities, the connection portion 21 using this flange structure 211 can ensure the accurate positioning of the bushing 30 during the installation process, prevent the high-voltage wires from being exposed due to the bushing 30 slipping, thereby avoiding possible risks of electric shock and protecting the lives of operators.

[0036] like Figure 1 As shown, a hinged portion 231 rotatably connected to the mounting frame 10 is provided in the middle of the swing rod 23, and both ends of the elastic member 40 are respectively connected to the second ends of the swing rods 23 of the two sleeve expansion members 20. The design of the hinged portion 231 enables the swing rod 23 to rotate flexibly and adapt to sleeves 30 of different sizes, thereby enhancing the versatility and adaptability of the device and being suitable for the installation of sleeves 30 of various specifications.

[0037] The swing arm 23 with such an articulated design can flexibly adjust the expansion force according to the size of the sleeve 30, ensuring precise fit for each installation. It is suitable for the installation of sleeves of various specifications, from communication wires to high-voltage power wires, greatly broadening the application range of the device.

[0038] Furthermore, since both ends of the elastic member 40 are respectively connected to the second ends of the swing rods 23 of the two sleeve expansion members 20, the elastic member 40 will not interfere with the sleeve and other components during the installation of the sleeve, thereby facilitating the installation operation.

[0039] like Figure 1 As shown, the hinged portion 231 is specifically a hinged cylinder 2311, and the hinged cylinder 2311 is rotatably sleeved on the mounting frame 10. The use of the hinged cylinder 2311 not only ensures the stable rotation of the swing rod 23, but also simplifies the structure of the device, reduces the manufacturing cost, and is particularly suitable for large-scale production to meet the wide needs of the fields of electricity, communication, etc.

[0040] The use of the articulated cylinder 2311 makes the rotation of the swing arm 23 smoother, reduces vibration during operation, and improves the working stability of the device. It also simplifies the maintenance process, reduces the maintenance cost of long-term operation, and meets its daily maintenance and rapid response needs.

[0041] In this embodiment, the elastic member 40 is specifically a spring 41. As an elastic member, the spring 41 can provide a stable and continuous expansion force to ensure reliable expansion of the mouth of the sleeve 30, and can quickly return to its original state when not in use, thereby improving the response speed and service life of the device.

[0042] Using the spring 41 as the elastic member can not only ensure that a stable expansion force can be provided under various environmental conditions, but also can quickly rebound and return to the initial state after the operator releases the sleeve 30. This rapid response capability is particularly suitable for emergency repair scenarios that require rapid installation and removal of the sleeve, such as emergency repair work on power lines after natural disasters.

[0043] The spring 41 is in a naturally contracted state when not in operation, is stretched when in operation, and contracts and returns to a natural state after the operation is completed.

[0044] like Figure 1 As shown, the sleeve expansion member 20 includes at least two swinging rods 23, and the convenient sleeve installation device includes at least two elastic members 40. The at least two swinging rods 23 and the at least two elastic members 40 are arranged one by one, and the at least two swinging rods 23 are arranged at intervals along the length direction of the expansion plate 22. The arrangement of multiple swinging rods 23 and elastic members 40 can expand the sleeve 30 more evenly, prevent the sleeve 30 from deforming during the expansion process, and ensure the installation quality.

[0045] The arrangement of multiple swinging rods 23 and elastic members 40 is suitable for occasions with high requirements for installation accuracy, such as wire protection of precision instruments. In the installation of wire protection of precision instruments, the design of using multiple swinging rods 23 and elastic members 40 can ensure the uniformity and stability of the sleeve 30 during expansion, avoid deformation of the sleeve 30 due to local uneven force, protect the wire 70 from damage, and improve the aesthetics and neatness of wire wiring.

[0046] like Figure 1 As shown, the portable bushing installation device also includes a connector 60, and the mounting frame 10 is detachably connected to the insulating operating rod 50 through the connector 60. The provision of the connector 60 not only ensures a firm connection between the mounting frame 10 and the insulating operating rod 50, but also facilitates the disassembly, assembly and maintenance of the device, thereby improving the operating efficiency.

[0047] The mounting frame 10 is connected to the insulating operating rod 50 via the connector 60, which not only ensures the overall stability and safety of the device during operation, but also facilitates rapid disassembly and assembly in different working scenarios. It is particularly suitable for on-site operation needs of power repair teams, and can quickly adjust tool configurations to cope with various emergencies.

[0048] like Figure 1 As shown, the connecting member 60 is specifically a connecting tube 61, the inner wall of the connecting tube 61 is provided with an internal thread, the upper end of the insulating operating rod 50 is provided with an external thread, and the upper end of the insulating operating rod 50 is inserted into the connecting tube 61 and threadedly connected to the connecting tube 61. The threaded connection method is reliable and easy to disassemble and assemble.

[0049] In this embodiment, the insulating operating rod 50 is a retractable structure and can be adjusted according to the actual working height requirements. The retractable insulating operating rod 50 can adapt to different working distances, and the operator does not need to directly contact the bushing 30, which reduces the risk of electric shock, improves the safety of the operation, and is suitable for live operations of power facilities.

[0050] During live operations at power facilities, the operator can maintain a safe distance and reduce the risk of electric shock by using the retractable insulating operating rod 50. At the same time, the operator can flexibly adjust the length of the operating rod according to the specific conditions of the work site, thereby improving the flexibility and safety of the operation. Especially when handling high-voltage wires, this design can effectively protect the personal safety of the operator.

[0051] In this embodiment, the expansion plate 22 is located below the mounting frame 10, the flange structure 211 is provided at the lower end of the expansion plate 22, and the notch of the limit slot 212 faces upward. This design allows the connection between the sleeve and the device to be completed conveniently on the ground, and the sleeve can be inserted and connected by simply aligning the mouth of the sleeve with the upward limit slot 212, which greatly reduces the difficulty and time of operation and improves work efficiency. The design of the notch facing upward allows the sleeve to be stably maintained in the limit slot when it is opened by the expansion plate until the installation is completed and the release is completed, which enhances the controllability and reliability during the operation.

[0052] The distance between the hinge 231 and the first end of the swing rod 23 is greater than the distance between the hinge 231 and the second end of the swing rod 23. A longer force arm is formed between the open end (first end) of the swing rod and the hinge, which can reduce the stress of the spring during expansion and reset, extend the service life of the spring, and make the spring work more smoothly during operation, avoid excessive changes in instantaneous force, and improve the reliability and durability of the device.

[0053] In this embodiment, the mounting frame is a frame-shaped structure, which has the advantages of simple structure and low cost.

[0054] Among them, the telescopic mechanism of the insulating operating rod can adopt a built-in spiral tube structure to achieve telescopic operation through rotation operation.

[0055] Among them, an anti-slip pad can be set at the lower end of the insulating operating rod to improve the anti-slip effect.

[0056] In this embodiment, the insulating operating rod is a 10kV insulating telescopic rod, which is made of insulating material and can withstand voltages of 10kV and below.

[0057] This convenient casing installation device can solve the pain points of three-wire hanging in different places. The existing power supply station’s daily casing is installed manually. To install the casing manually, you need to wear a safety belt and climb a ladder or wear foot buckles to climb a pole to install the casing at high altitude. Especially when the safe distance between the live line and the human body is not enough, it is also necessary to shut down the casing line. Such conventional casing methods often have complicated steps, long installation time, low installation efficiency, and risks of electric shock and falling from height. In particular, when the safety distance is insufficient and the line needs to be shut down, it often affects the user's sense of gain in electricity use and reduces the reliability of the line power supply, which is not in line with the direction of our future power development.

[0058] The inventor has developed a convenient installation bushing with adjustable height and 10kV voltage resistance according to the daily bushing needs of power supply stations, such as three-wire hanging bushings, anti-collision marking bushings, and bushings required for lines crossing densely populated areas. The convenient bushing installation device can safely and efficiently install the bushing on the line at a specified height, reducing the need to climb ladders and poles, reducing the risk of falling from heights and electric shock, reducing the number of power outages, improving power supply reliability, and improving work efficiency.

[0059] The operation of the device is briefly described as follows: On the ground, the spring is in a naturally compressed state, and the opening of the sleeve expansion piece opens to both sides.

[0060] Step 1: Open the sleeve and insert it into both sides of the sleeve expansion opening, and the spring will be stretched;

[0061] Step 2: Connect the insulating telescopic rod to the connector to ensure that the connector and the insulating telescopic rod are firmly connected;

[0062] Step 3: Pull open the insulating telescopic rod to make the height of the insulating rod meet the working height requirements of the work site;

[0063] Step 4: Extend the insulating telescopic arm and the casing expansion piece as a whole to just above a wire that needs casing;

[0064] Step 5: Pull the insulating rod downward. At this time, the sleeve is inserted into the wire. The spring shrinks naturally after being released. The two sides of the opening of the spring-linked sleeve expansion piece open, and the sleeve installation device is completely separated from the sleeve.

[0065] Step 6: Contract the insulating telescopic rod to its original state, remove the casing expansion piece, and complete a casing work.

[0066] The device provided by this embodiment has the following beneficial effects:

[0067] (1) The spring-casing expander structure is used to stretch the casing to expand, and then the casing is released mechanically, so the casing movement is reliable;

[0068] (2) The insulating telescopic rod is made of insulating high-voltage resistant material to effectively isolate live parts, ensure personal safety and avoid electric shock; the height of the telescopic rod is adjustable, which is suitable for various heights of medium and low voltage line casings in power supply stations;

[0069] (3) It can avoid climbing poles and ladders, greatly improving the safety of operations; it can operate when the low-voltage line is energized, which can reduce power outages for users and effectively improve the reliability of electricity; it can realize the direct insertion of casing (anti-collision marking casing / PVC casing to avoid three-wire hanging, etc.) into the line on the ground, reducing the time of wearing safety belts and climbing, and greatly improving work efficiency.

[0070] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0071] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being only exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0072] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0073] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0074] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only to facilitate the distinction between corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0075] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A convenient casing installation device, characterized in that: The portable casing installation device comprises: Mounting frame (10); Two sleeve expansion pieces (20), respectively located on both sides of the mounting frame (10) and rotatably connected to the mounting frame (10), the two sleeve expansion pieces (20) are each provided with a connection portion (21) that can be connected to the mouth of the sleeve (30), the connection portion (21) having a connection state connected to the sleeve (30) and a separation state separated from the sleeve (30); an elastic member (40), wherein both ends of the elastic member (40) are respectively connected to the two sleeve expansion members (20), and when the two sleeve expansion members (20) are connected to the sleeve (30), the elastic member (40) applies an elastic force to the two sleeve expansion members (20) so as to move the two connecting portions (21) away from each other, thereby expanding the opening of the sleeve (30); An insulating operating rod (50), the upper end of the insulating operating rod (50) being connected to the mounting frame (10).

2. The portable casing installation device according to claim 1, characterized in that: The casing expansion piece (20) comprises: An expansion plate (22), the connecting portion (21) being arranged on the expansion plate (22); A swing rod (23), the first end of which is connected to the expansion plate (22), the swing rod (23) is rotatably connected to the mounting frame (10) via a hinge (231), and the two ends of the elastic member (40) are respectively connected to the second ends of the swing rods (23) of the two sleeve expansion members (20).

3. The portable casing installation device according to claim 2, characterized in that: The connecting portion (21) is specifically a flange structure (211) arranged at one end of the expansion plate (22) away from the mounting frame (10), the inner wall of the flange structure (211) forms a limiting groove (212) in which the mouth of the sleeve (30) can be inserted, and the notch of the limiting groove (212) is arranged toward the mounting frame (10).

4. The portable casing installation device according to claim 2, characterized in that: A hinged portion (231) rotatably connected to the mounting frame (10) is provided in the middle of the swing rod (23), and both ends of the elastic member (40) are respectively connected to the second ends of the swing rods (23) of the two sleeve expansion members (20).

5. The portable casing installation device according to claim 4, characterized in that: The hinged portion (231) is specifically a hinged tube (2311), and the hinged tube (2311) is rotatably sleeved on the mounting frame (10).

6. The portable casing installation device according to claim 2, characterized in that: The elastic member (40) is specifically a spring (41).

7. The portable casing installation device according to claim 2, characterized in that: The sleeve expansion piece (20) comprises at least two swinging rods (23), and the portable sleeve installation device comprises at least two elastic members (40). The at least two swinging rods (23) and the at least two elastic members (40) are arranged in a one-to-one correspondence, and the at least two swinging rods (23) are arranged at intervals along the length direction of the expansion plate (22).

8. The portable casing installation device according to claim 1, characterized in that: The portable bushing installation device also includes a connecting piece (60), and the installation frame (10) is connected to the insulating operating rod (50) via the connecting piece (60).

9. The portable casing installation device according to claim 8, characterized in that: The connecting piece (60) is specifically a connecting tube (61), the inner wall of the connecting tube (61) is provided with an internal thread, the upper end of the insulating operating rod (50) is provided with an external thread, and the upper end of the insulating operating rod (50) is inserted into the connecting tube (61) and is threadedly connected to the connecting tube (61).

10. The portable casing installation device according to claim 1, characterized in that: The insulating operating rod (50) is a retractable structure and can be adjusted according to actual working height requirements.

Images