Maintenance tool special for liquid oxygen return valve

Abstract

The utility model discloses a special maintenance tool for a liquid oxygen return valve, which comprises a gear box, the top of the gear box is provided with a box cover, the bottom of the inner wall of the gear box is movably connected with a first transmission wheel through a rotating shaft, the top of the first transmission wheel is provided with a rotating groove, and the right side of the first transmission wheel is meshed with a second transmission wheel; the bottom of the second transmission wheel is movably connected with the bottom of the inner wall of the gearbox through a rotating shaft, the top of the second transmission wheel is fixedly connected with a first torque wheel, the right side of the first torque wheel is meshed with a second torque wheel, and a sleeve rod is fixedly connected into the second torque wheel. By means of the tool, a fastening bolt in the liquid oxygen throttle valve can be effectively screwed, the phenomenon that a user only operates through a common tool is very labor-consuming is avoided, the practicability of the tool is enhanced, and the phenomenon that the user cannot rapidly fasten the fastening bolt through a maintenance tool is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid oxygen reflux valve technical field, concretely is liquid oxygen reflux valve special overhauling frock. BACKGROUND

[0002] Liquid oxygen has extensive industrial and medical uses, the method of manufacturing liquid oxygen in industry is to carry out fractionation to liquid air, and the total expansion ratio of liquid oxygen is as high as 860:1, because of this advantage, it is widely used in industrial production and military aspects in modern times, due to its low-temperature characteristics, liquid oxygen can make the substances contacted by it very brittle, and liquid oxygen is also a very strong oxidant: organic matter burns violently in liquid oxygen, and some substances may explode if immersed in liquid oxygen for a long time, including asphalt.

[0003] When liquid oxygen is transported, a reflux valve needs to be used, and the fastening nut inside the liquid oxygen reflux valve will be loose after long-term use, which makes the nut position improper, and the reflux valve cannot be normally used, but the existing maintenance tool is inconvenient to operate, and after the tool is inserted into the reflux valve, it cannot be effectively used, reducing the practicability of the maintenance tool.

[0004] Therefore, the maintenance tool needs to be improved to prevent the user from being unable to quickly fasten the fastening screw through the maintenance tool. UTILITY MODEL CONTENTS

[0005] To solve the problems in the background art, the utility model aims to provide a liquid oxygen reflux valve special overhauling frock, which is convenient to use, and solves the problems of inconvenient operation of the existing maintenance tool, ineffective use of the tool after being inserted into the reflux valve, and reduced practicability of the maintenance tool.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a liquid oxygen reflux valve special overhauling frock, comprising:

[0007] The utility model provides a gear box, the top of gear box is equipped with the box cover, the bottom of gear box inner wall is swingly connected with first transmission wheel through the pivot, the top of first transmission wheel is equipped with the rotation groove, the right side of first transmission wheel is engaged with second transmission wheel, the bottom of second transmission wheel is swingly connected with the bottom of gear box inner wall through the pivot, the top of second transmission wheel is fixedly connected with first torque wheel, the right side of first torque wheel is engaged with second torque wheel, the inside of second torque wheel is fixedly connected with sleeve rod, the bottom of sleeve rod is passed to the bottom of gear box and is connected with the inner wall of gear box slidingly, the top of sleeve rod is passed to the outside of box cover and is connected with the inner wall of box cover slidingly, the top and bottom of sleeve rod surface are all fixedly connected with the limiting board, the one end of limiting board away from sleeve rod all is contacted with the bottom of gear box inner wall and the bottom of box cover, the inside of sleeve rod is connected with torque wrench slidingly, the top of box cover is fixedly equipped with the placing mouth, the front side of box cover top is equipped with the protection mechanism,

[0008] The protection mechanism comprises a transmission box fixedly connected to the front side of the top of the box cover, a limiting groove is formed in the rear side of the transmission box, a connecting rod is rotatably connected to the inside of the limiting groove through a pin, a protective sleeve is fixedly connected to the rear side of the connecting rod, the protective sleeve is sleeved on the surface of the placing mouth, a rotating rod is arranged on the top of the transmission box, the bottom of the rotating rod extends into the inside of the transmission box and is movably connected to the bottom of the inner wall of the transmission box through a bearing, an elliptical push block is fixedly connected to the surface of the rotating rod, push plates are arranged on the two sides of the elliptical push block, clamping blocks are fixedly connected to the inner sides of the push plates, the inner sides of the clamping blocks extend into the inside of the connecting rod and are movably connected to the inner wall of the connecting rod.

[0009] As preferred in the utility model, a rotating block is fixedly connected to the top of the rotating rod, and the rotating block is used in cooperation with the rotating rod.

[0010] As preferred in the utility model, guide rods are fixedly connected to the two sides of the inner wall of the transmission box in a transverse manner, and the guide rods extend through the push plates and are movably connected to the push plates.

[0011] As preferred in the utility model, a rebounder is fixedly connected to the outer side of the push plate, and the outer side of the rebounder is fixedly connected to the inner wall of the transmission box.

[0012] As preferred in the utility model, openings are formed in the two sides of the inner wall of the limiting groove, the width of the openings is greater than the width of the clamping blocks, and the openings are used in cooperation with the clamping blocks.

[0013] As preferred in the utility model, a friction pad is fixedly connected to the inner side of the clamping block, and the surface of the friction pad is in contact with the inner wall of the connecting rod.

[0014] As preferred in the utility model, a rotating groove is formed in the surface of the rotating block, and the rotating groove is used in cooperation with the rotating block.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] 1、 the utility model discloses can be effectively to the fastening bolt inside the liquid oxygen throttling valve tight twist tight, avoid the phenomenon that the user only through the ordinary tool operation appears very hard, strengthen the practicality of the overhaul tooling, prevent the user unable to fasten the fastening screw through the maintenance tool phenomenon.

[0017] 2、 the utility model discloses through setting the swivel block, can be convenient for user rotation swivel block, improved the comfort of user. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is structure schematic diagram of the utility model;

[0019] Figure 2 It is structure exploded view of the utility model;

[0020] Figure 3 It is local structure enlarged view of the utility model;

[0021] Figure 4 It is transmission box section enlarged view of the utility model.

[0022] In the drawing: 1, gear box;2, box cover;3, first transmission wheel;4, rotary groove;5, second transmission wheel;6, first torque wheel;7, second torque wheel;8, sleeve rod;9, limit plate;10, torque wrench;11, placing opening;12, protection mechanism;121, transmission box;122, limit groove;123, connecting rod;124, protection sleeve;125, rotating rod;126, oval push block;127, push plate;128, clamping block;13, swivel block;14, guide rod;15, springback device;16, opening;17, friction pad;18, rotary groove. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] As Figures 1 to 4 shown, the utility model provides a special overhaul tooling for liquid oxygen reflux valve, comprising:

[0025] The gear box 1, the top of the gear box 1 is provided with a box cover 2, the bottom of the inner wall of the gear box 1 is movably connected with a first transmission wheel 3 through a rotating shaft, a rotating groove 184 is formed in the top of the first transmission wheel 3, the right side of the first transmission wheel 3 is engaged with a second transmission wheel 5, the bottom of the second transmission wheel 5 is movably connected with the bottom of the inner wall of the gear box 1 through a rotating shaft, the top of the second transmission wheel 5 is fixedly connected with a first torque wheel 6, the right side of the first torque wheel 6 is engaged with a second torque wheel 7, the inside of the second torque wheel 7 is fixedly connected with a sleeve rod 8, the bottom of the sleeve rod 8 penetrates to the bottom of the gear box 1 and is slidably connected with the inner wall of the gear box 1, the top of the sleeve rod 8 penetrates to the outside of the box cover 2 and is slidably connected with the inner wall of the box cover 2, the top and the bottom of the surface of the sleeve rod 8 are fixedly connected with limit plates 9, the ends, away from the sleeve rod 8, of the limit plates 9 are in contact with the bottom of the inner wall of the gear box 1 and the bottom of the box cover 2, a torque wrench 10 is slidably connected in the inside of the sleeve rod 8, a placing opening 11 is fixedly formed in the top of the box cover 2, a protection mechanism 12 is arranged on the front side of the top of the box cover 2;

[0026] The protection mechanism 12 comprises a transmission box 121 fixedly connected to the top of the front side of the box cover 2, a limiting groove 122 is formed in the rear side of the transmission box 121, a connecting rod 123 is rotatably connected in the inside of the limiting groove 122 through a pin rod, a protection sleeve 124 is fixedly connected to the rear side of the connecting rod 123, the protection sleeve 124 is sleeved on the surface of the placing opening 11, a rotating rod 125 is arranged on the top of the transmission box 121, the bottom of the rotating rod 125 extends to the inside of the transmission box 121 and is movably connected with the bottom of the inner wall of the transmission box 121 through a bearing, an elliptical push block 126 is fixedly connected to the surface of the rotating rod 125, push plates 127 are arranged on the two sides of the elliptical push block 126, clamping blocks 128 are fixedly connected to the inner sides of the push plates 127, the inner sides of the clamping blocks 128 extend to the inside of the connecting rod 123 and are slidably connected with the inner wall of the connecting rod 123.

[0027] With reference to Figure 1 The top of the rotating rod 125 is fixedly connected with a rotating block 13, and the rotating block 13 is used in cooperation with the rotating rod 125.

[0028] As a technical optimization scheme of the utility model, the rotating block 13 is arranged, so that the user can conveniently rotate the rotating block 13, and the comfort of the user is improved.

[0029] With reference to Figure 3 The two sides of the inner wall of the transmission box 121 are fixedly connected with guide rods 14 in the transverse direction, the guide rods 14 penetrate through the push plates 127 and are slidably connected with the push plates 127.

[0030] As a technical optimization scheme of the utility model, the guide rods 14 are arranged, so that the push plates 127 can be guided, and the phenomenon that the push plates 127 are inclined and stuck during movement is prevented.

[0031] With reference to Figure 4The outer side of the push plate 127 is fixedly connected with a rebounder 15, and the outer side of the rebounder 15 is fixedly connected with the inner wall of the transmission box 121.

[0032] As a technical optimization scheme of the utility model, the rebounder 15 is arranged, so that the push plate 127 is automatically moved inward, and the stability of the push plate 127 is improved.

[0033] Reference Figure 4 The two sides of the inner wall of the limiting groove 122 are both provided with an opening 16, the width of the opening 16 is greater than the width of the clamping block 128, and the opening 16 is used in cooperation with the clamping block 128.

[0034] As a technical optimization scheme of the utility model, the opening 16 is arranged, so that the clamping block 128 can pass through the transmission box 121 for limiting, and the phenomenon that the clamping block 128 is stuck is prevented due to the opening 16 being too small.

[0035] Reference Figure 4 The inner side of the clamping block 128 is fixedly connected with a friction pad 17, and the surface of the friction pad 17 is in contact with the inner wall of the connecting rod 123.

[0036] As a technical optimization scheme of the utility model, the friction pad 17 is arranged, so that the clamping block 128 is more closely in contact with the connecting rod 123, and the contact area of the clamping block 128 and the connecting rod 123 is increased.

[0037] Reference Figure 2 The surface of the rotating block 13 is provided with a rotating groove 18, and the rotating groove 18 is used in cooperation with the rotating block 13.

[0038] As a technical optimization scheme of the utility model, the rotating groove 18 is arranged, so that the rotating block 13 can be conveniently rotated by a user, and the phenomenon that the user slips when rotating the rotating block 13 is prevented.

[0039] The working principle and use process of the utility model are: when using, firstly, the back of the gear box 1 is pasted at the inlet and outlet of the liquid oxygen throttling valve, the torque wrench 10 inside the sleeve rod 8 extends to the inside of the liquid oxygen throttling valve and is sleeved on the surface of the fastening bolt, then the rotating block 13 is rotated, the rotating block 13 drives the rotating rod 125 and the oval push block 126 to rotate, the oval push block 126 pushes the push plate 127 to move outward, the push plate 127 drives the clamping block 128 to move outward, the clamping block 128 moves away from the connecting rod 123, after moving away, the connecting rod 123 and the protective sleeve 124 are turned forward, the protective sleeve 124 moves away from the placing opening 11, after moving away, the torque multiplier is placed into the inside of the placing opening 11 and is inserted into the inside of the rotating groove 4, the torque multiplier is started, the torque multiplier drives the first transmission wheel 3 to rotate, the first transmission wheel 3 drives the second transmission wheel 5 to rotate, the second transmission wheel 5 drives the first torque wheel 6 to rotate, the first torque wheel 6 drives the second torque wheel 7 to rotate, the second torque wheel 7 drives the sleeve rod 8 and the torque wrench 10 to rotate, the torque wrench 10 is tightened to the fastening bolt.

[0040] In conclusion: the liquid oxygen backflow valve special maintenance tool, through the back of the gear box 1 is pasted at the inlet and outlet of the liquid oxygen throttling valve, the torque wrench 10 inside the sleeve rod 8 extends to the inside of the liquid oxygen throttling valve and is sleeved on the surface of the fastening bolt, then the rotating block 13 is rotated, the rotating block 13 drives the rotating rod 125 and the oval push block 126 to rotate, the oval push block 126 pushes the push plate 127 to move outward, the push plate 127 drives the clamping block 128 to move outward, the clamping block 128 moves away from the connecting rod 123, after moving away, the connecting rod 123 and the protective sleeve 124 are turned forward, the protective sleeve 124 moves away from the placing opening 11, after moving away, the torque multiplier is placed into the inside of the placing opening 11 and is inserted into the inside of the rotating groove 4, the torque multiplier is started, the torque multiplier drives the first transmission wheel 3 to rotate, the first transmission wheel 3 drives the second transmission wheel 5 to rotate, the second transmission wheel 5 drives the first torque wheel 6 to rotate, the first torque wheel 6 drives the second torque wheel 7 to rotate, the second torque wheel 7 drives the sleeve rod 8 and the torque wrench 10 to rotate, the torque wrench 10 is tightened to the fastening bolt, thereby having the advantage of being convenient to use, solving the inconvenient operation of the existing maintenance tool, and after the tool is inserted into the backflow valve, the tool cannot be effectively used, reducing the practicability of the maintenance tool.

[0041] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0042] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. Special maintenance tool for liquid oxygen reflux valve, characterized by: include: A gear box (1), wherein a box cover (2) is provided on the top of the gear box (1), a first transmission wheel (3) is movably connected to the bottom of the inner wall of the gear box (1) via a rotating shaft, a rotating groove (18) (4) is provided on the top of the first transmission wheel (3), a second transmission wheel (5) is meshed on the right side of the first transmission wheel (3), the bottom of the second transmission wheel (5) is movably connected to the bottom of the inner wall of the gear box (1) via a rotating shaft, a first torque wheel (6) is fixedly connected to the top of the second transmission wheel (5), a second torque wheel (7) is meshed on the right side of the first torque wheel (6), and a sleeve rod (8) is fixedly connected inside the second torque wheel (7). ), the bottom of the sleeve rod (8) passes through the bottom of the gear box (1) and is slidably connected to the inner wall of the gear box (1), the top of the sleeve rod (8) passes through the outside of the box cover (2) and is slidably connected to the inner wall of the box cover (2), the top and bottom of the surface of the sleeve rod (8) are fixedly connected to the limit plate (9), the end of the limit plate (9) away from the sleeve rod (8) is in contact with the bottom of the inner wall of the gear box (1) and the bottom of the box cover (2), the interior of the sleeve rod (8) is slidably connected to a torque wrench (10), the top of the box cover (2) is fixedly provided with a placement opening (11), and the front side of the top of the box cover (2) is provided with a protective mechanism (12); The protective mechanism (12) comprises a transmission box (121) fixedly connected to the front side of the top of the box cover (2), a limiting groove (122) is provided on the rear side of the transmission box (121), a connecting rod (123) is rotatably connected to the interior of the limiting groove (122) through a pin, a protective sleeve (124) is fixedly connected to the rear side of the connecting rod (123), and the protective sleeve (124) is sleeved on the surface of the placement port (11), and a rotating rod (125) is provided on the top of the transmission box (121). ), the bottom of the rotating rod (125) extends to the interior of the transmission box (121) and is movably connected to the bottom of the inner wall of the transmission box (121) through a bearing, the surface of the rotating rod (125) is fixedly connected to an elliptical push block (126), both sides of the elliptical push block (126) are provided with a push plate (127), the inner side of the push plate (127) is fixedly connected to a clamping block (128), the inner side of the clamping block (128) extends to the interior of the connecting rod (123) and is slidably connected to the inner wall of the connecting rod (123).

2. The special maintenance tool for liquid oxygen reflux valve according to claim 1 is characterized in that: The top of the rotating rod (125) is fixedly connected with a rotating block (13), and the rotating block (13) is used in conjunction with the rotating rod (125).

3. The special maintenance tool for liquid oxygen reflux valve according to claim 1 is characterized in that: Both sides of the inner wall of the transmission box (121) are transversely fixedly connected with guide rods (14), and the guide rods (14) pass through the push plate (127) and are slidably connected to the push plate (127).

4. The special maintenance tool for liquid oxygen reflux valve according to claim 1, characterized in that: The outer side of the push plate (127) is fixedly connected to a rebounder (15), and the outer side of the rebounder (15) is fixedly connected to the inner wall of the transmission box (121).

5. The special maintenance tool for liquid oxygen reflux valve according to claim 1 is characterized in that: Openings (16) are provided on both sides of the inner wall of the limiting groove (122); the width of the opening (16) is greater than the width of the clamping block (128); and the opening (16) is used in conjunction with the clamping block (128).

6. The special maintenance tool for liquid oxygen reflux valve according to claim 1, characterized in that: A friction pad (17) is fixedly connected to the inner side of the clamping block (128), and the surface of the friction pad (17) contacts the inner wall of the connecting rod (123).

7. The special maintenance tool for liquid oxygen reflux valve according to claim 2, characterized in that: A rotation groove (18) is provided on the surface of the rotation block (13), and the rotation groove (18) is used in conjunction with the rotation block (13).

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