Bolt dismounting and mounting device for narrow and small space

Abstract

The utility model discloses a bolt dismounting and mounting device for a narrow space, which belongs to the field of mechanical tools and comprises a seat body, a connecting component is in threaded connection with the outer wall of the seat body, a bottom connecting component is inserted into the connecting component, and a connecting sleeve is mounted on the inner wall of the bottom connecting component in a threaded manner. The end, away from the bottom connecting assembly, of the connecting sleeve is in threaded connection with a top connecting assembly, the outer wall of the top connecting assembly is in threaded connection with a mounting assembly, and an electric wrench is fixedly mounted at the top of the seat body. The beneficial effects of the utility model are that the installation assembly, the top connecting assembly, the bottom connecting assembly and the connecting sleeve are designed in a modularized manner, so that disassembly and split charging are realized, and transportation and management are facilitated; and the adaptability is good, and the connecting sleeve and the driven rod with different lengths can be selected according to the distance of a narrow space to meet the requirements of transmission and the operation distance of extending the bolt sleeve.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical tool field, specifically, relate to a bolt dismounting device for narrow space. BACKGROUND

[0002] In the industry such as machinery, electric power, building and urban rail transit, often need to carry out the dismounting operation to the bolt in the narrow space, the traditional wrench is difficult to effectively work in the narrow space due to structural limitation, often need to adopt the destructive means such as first unloading external shell or using prying, knocking, drilling and dismounting, these methods not only time-consuming and laborious, and easy to damage equipment, affect maintenance efficiency and quality, therefore, it is particularly important to develop a bolt dismounting device suitable for narrow space.

[0003] Due to the bolt of the equipment in the narrow space is inconvenient to dismount under part condition, and the work under the premise of not dismounting and moving away the obstacle can only be manually dismounted by entering the narrow space by the staff, not only is not conducive to the force, but also is difficult to use electric wrench and other tools to assist, therefore, a bolt dismounting device for narrow space is proposed. UTILITY MODEL CONTENTS

[0004] In order to overcome the difficulty of traditional wrench in effective work in narrow space due to structural limitation in the prior art, the utility model provides a bolt dismounting device for narrow space, which comprises a seat body, a connecting assembly is threadedly connected to the outer wall of the seat body, a bottom connecting assembly is inserted into the inside of the connecting assembly, a connecting sleeve is threadedly installed on the inner wall of the bottom connecting assembly, a top connecting assembly is threadedly connected to the end of the connecting sleeve away from the bottom connecting assembly, an installation assembly is threadedly connected to the outer wall of the top connecting assembly, an electric wrench is fixedly installed on the top of the seat body, and a transmission rod is coaxially connected to the output end of the electric wrench.

[0005] The bottom connecting assembly comprises a bottom pipe body, a bottom bearing seat is fixedly installed in the inside of the bottom pipe body, a driven rod is movably installed in the inside of the bottom bearing seat, a first bevel gear is fixedly installed on the outside of the driven rod, a threaded sleeve rod is fixedly connected in the inside of the first bevel gear, and the end of the transmission rod away from the electric wrench is threadedly installed in the inside of the threaded sleeve rod.

[0006] The top connecting assembly comprises a top pipe body, a top bearing seat is fixedly installed in the inside of the top pipe body, a connecting rod is movably installed in the inside of the top bearing seat, a second bevel gear is fixedly installed on the outside of the connecting rod, and the end of the driven rod away from the first bevel gear is fixedly connected in the inside of the second bevel gear.

[0007] Preferably, the mounting assembly comprises a mounting disc, the mounting disc is threadedly connected with the connecting rod, and the outer wall of the mounting disc is detachably provided with four bolt sleeves.

[0008] The bolt sleeve is used for adapting to bolts of different sizes, and therefore more bolt sleeves can be installed to meet the adaptability requirement.

[0009] Preferably, the front surface and the back surface of the seat body are both provided with threaded holes for positioning.

[0010] Preferably, the connecting assembly comprises an annular positioning seat, the outer wall of the annular positioning seat is fixedly provided with a connecting arm, the bottom pipe body is inserted into the inner portion of the annular positioning seat, the inner portion of the connecting arm is threadedly provided with a positioning screw rod, and the positioning screw rod penetrates through the connecting arm and is threadedly connected to the inner portion of the threaded hole.

[0011] The connecting assembly is used for improving the stability between the bottom connecting assembly and the electric wrench.

[0012] Preferably, the inner walls of the top pipe body and the bottom pipe body are both provided with connecting threads.

[0013] Preferably, the connecting sleeve is internally hollow in the upper and lower grooves, the outer walls of the two ends of the connecting sleeve are both provided with butt threads, and the two ends of the connecting sleeve are threadedly connected with the top pipe body and the bottom pipe body respectively.

[0014] Preferably, the top pipe body and the bottom pipe body are both in the shape of an "L" letter.

[0015] Beneficial effects:

[0016] The beneficial effects of the technical scheme of the utility model are as follows:

[0017] (1) The modular design of the mounting assembly, the top connecting assembly, the bottom connecting assembly and the connecting sleeve can be easily disassembled, transported and managed, and has good adaptability, so that different lengths of the connecting sleeve and the driven rod can be selected according to the distance of the narrow space to meet the operation distance of the transmission and the extension bolt sleeve, and the bolt sleeve can also be adapted to engage with bolts of various specifications and sizes, thereby meeting the requirement of bolt disassembly in a narrow environment.

[0018] (2) The seat body is stably connected with the bottom connecting assembly through the connecting assembly, and the connecting assembly can be disassembled, so that the compactness between the components can be significantly improved when the connecting assembly is connected with the bottom connecting assembly and the seat body at the same time, and the requirement of bolt disassembly can be met without affecting the flexibility, thereby improving the work efficiency, reducing the labor intensity of the operator and reducing the occurrence of safety accidents. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be considered as limiting the scope. For those skilled in the art, other related drawings can be obtained without creative labor on the basis of the drawings.

[0020] Fig. 1 is a structural schematic diagram of the present application;

[0021] Fig. 2 is a structural schematic diagram of the mounting assembly of the present application;

[0022] Fig. 3 is a structural sectional view of the top pipe body and the bottom pipe body of the present application;

[0023] Fig. 4 is a structural side view of the connecting assembly of the present application.

[0024] In the drawings: 1, seat body; 2, connecting assembly; 20, annular positioning seat; 21, connecting arm; 22, positioning screw; 3, electric wrench; 31, transmission rod; 4, bottom connecting assembly; 40, bottom bearing seat; 41, driven rod; 42, first bevel gear; 43, bottom pipe body; 44, threaded sleeve rod; 5, connecting sleeve; 6, top connecting assembly; 60, top bearing seat; 61, connecting rod; 62, second bevel gear; 63, top pipe body; 7, mounting assembly; 70, mounting disc; 71, bolt sleeve. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0026] The present application will be further described in combination with the drawings and embodiments as follows:

[0027] As Figs. 1 to 4As shown, a bolt dismounting device for narrow space, in embodiment 1, the outer wall of the top connecting assembly 6 is threadedly connected with the mounting assembly 7, the top of the seat body 1 is fixedly installed with the electric wrench 3, the output end of the electric wrench 3 is coaxially connected with the transmission rod 31, and the end of the transmission rod 31 away from the electric wrench 3 is threadedly installed in the inside of the threaded sleeve rod 44, and the mounting assembly 7 connected with the top connecting assembly 6 and the bottom connecting assembly 4 is threadedly connected with the transmission rod 31, so that the device can be assembled on the spot for dismounting and has the characteristic of portability.

[0028] In addition, the connecting sleeve 5 is internally hollow with upper and lower slots, and the outer walls of the two ends of the connecting sleeve 5 are provided with butt threads, and the two ends of the connecting sleeve 5 are threadedly connected with the top pipe body 63 and the bottom pipe body 43 respectively, and the length of the connecting sleeve 5 and the driven rod 41 is not fixed, and appropriate lengths of the connecting sleeve 5 and the driven rod 41 can be selected according to the on-site operation requirements, mainly to enable the mounting assembly 7 to be attached to the target bolt in a narrow environment, so that the bolt can be dismounted without personnel entering the narrow space or moving obstacles.

[0029] As shown in Figs. 1 to 4 As shown, a bolt dismounting device for narrow space, in embodiment 2, the mounting assembly 7 comprises a mounting disc 70, the mounting disc 70 is threadedly connected with the connecting rod 61, and the outer wall of the mounting disc 70 is detachably installed with four bolt sleeves 71, the mounting disc 70 is provided with four grooves on the side away from the connecting rod 61, and the grooves can be clamped with the bolt sleeves 71, in order to meet the use requirements, the barrel diameters of the bolt sleeves 71 are not consistent, and different sizes of bolts can be fitted to meet the dismounting requirements;

[0030] It should be noted that the size of the mounting disc 70, the groove and the bolt sleeve 71 is also not fixed, and the bolt sleeve 71 of a common model bolt can meet most dismounting requirements according to the use requirements, in addition, in order to prevent the problem of low visibility in a narrow environment, a video probe can also be installed on the top pipe body 63 to explore the situation at the mounting disc 70, and the data transmission line is not attached to the rotating parts such as the connecting rod 61, so it is not affected, and the display screen cooperating with the feedback video information can complete the work of dismounting the bolt in a narrow area by one person.

[0031] Working principle: in use first connecting the driven rod 41 both ends of the first bevel gear 42 and the second bevel gear 62 respectively, and according to the length of the work space selected to assemble the top pipe body 63 and the bottom pipe body 43 with the connecting sleeve 5, and the threaded connection of the rotating installation disc 70 and the connecting rod 61, finally the transmission rod 31 and the threaded sleeve rod 44 are connected, the assembly work can be completed, according to the length advantage of the connecting sleeve 5, the bolt sleeve 71 is engaged to the bolt, according to the size of the bolt, different bolt sleeve 71 can be selected to adapt, finally start the electric wrench 3 to make the transmission rod 31 rotate, when the transmission rod 31 rotates, the first bevel gear 42, the driven rod 41, the second bevel gear 62, the connecting rod 61 are driven, so that the bolt sleeve 71 engaged with the bolt rotates and takes out the bolt.

[0032] The preferred embodiments of the present application have been described above, but the present application is not limited to the above embodiments, and various modifications and changes can be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A bolt dismounting device for a narrow space, characterized in that, The utility model provides a kind of electric wrench, including seat body (1), the outer wall of seat body (1) is threadedly connected with connecting assembly (2), the inside of connecting assembly (2) is inserted with bottom connecting assembly (4), the inner wall of bottom connecting assembly (4) is threadedly installed with connecting sleeve (5), the end of connecting sleeve (5) away from bottom connecting assembly (4) is threadedly connected with top connecting assembly (6), the outer wall of top connecting assembly (6) is threadedly connected with installation assembly (7), the top of seat body (1) is fixedly installed with electric wrench (3), the output end of electric wrench (3) is coaxially connected with transmission rod (31). The bottom connecting assembly (4) includes a bottom pipe body (43), and a bottom bearing seat (40) is fixedly installed inside the bottom pipe body (43), a driven rod (41) is movably installed inside the bottom bearing seat (40), a first bevel gear (42) is fixedly installed outside the driven rod (41), a threaded sleeve rod (44) is fixedly connected inside the first bevel gear (42), and the end of the transmission rod (31) away from the electric wrench (3) is threadedly installed inside the threaded sleeve rod (44). The top connecting assembly (6) includes a top pipe body (63), and a top bearing seat (60) is fixedly installed inside the top pipe body (63), a connecting rod (61) is movably installed inside the top bearing seat (60), a second bevel gear (62) is fixedly installed outside the connecting rod (61), and the end of the driven rod (41) away from the first bevel gear (42) is fixedly connected inside the second bevel gear (62).

2. A bolt dismounting device for narrow spaces according to claim 1, characterized in that The installation assembly (7) includes a mounting disc (70), the mounting disc (70) is threadedly connected with the connecting rod (61), and four bolt sleeves (71) are detachably installed on the outer wall of the mounting disc (70).

3. A bolt dismounting device for narrow spaces according to claim 1, characterized in that Threaded holes for positioning are formed on the front and back of the seat body (1).

4. A bolt dismounting device for a confined space according to claim 3, characterized in that The connecting assembly (2) includes an annular positioning seat (20), a connecting arm (21) is fixedly installed on the outer wall of the annular positioning seat (20), the bottom pipe body (43) is inserted inside the annular positioning seat (20), a positioning screw (22) is threadedly installed inside the connecting arm (21), and the positioning screw (22) penetrates through the connecting arm (21) and is threadedly connected inside the threaded hole.

5. The bolt dismounting device for a narrow space according to claim 1, characterized in that, Connecting threads are formed on the inner walls of the top pipe body (63) and the bottom pipe body (43).

6. A bolt dismounting device for a confined space according to claim 5, characterized in that The connecting sleeve (5) is hollow in the upper and lower slotted interior, and butt threads are formed on the outer walls of the two ends of the connecting sleeve (5), the two ends of the connecting sleeve (5) are threadedly connected with the top pipe body (63) and the bottom pipe body (43) respectively.

7. A bolt dismounting device for narrow spaces according to claim 5, characterized in that The top pipe body (63) and the bottom pipe body (43) are both in the shape of an "L".

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