Tensioner assembly facilitating oil injection

Abstract

The utility model belongs to the technical field of tensioners, and particularly relates to a tensioner assembly convenient for oil injection, which comprises an oil cylinder, a piston slidably connected in the oil cylinder, an ejector rod fixedly connected on the upper surface of the piston, a base mounted on the upper surface of the oil cylinder, a tensioning block slidably connected in the base, and a tensioning block fixedly connected on the upper surface of the ejector rod. A rack is fixedly connected to one side of the mounting block, a rotating shaft is rotationally connected to the interior of the base, a gear is fixedly connected to the outer wall of the rotating shaft, the gear is meshed with the rack, a rotating rod is mounted at one end of the rotating shaft, an anti-skid pad is fixedly connected to the outer wall of the rotating rod, and an oil filling pipe is fixedly connected to the bottom end of the oil cylinder; the outer wall of the oil filling pipe is fixedly connected with a one-way valve. The rack drives the ejector rod to move upwards, the piston moves upwards synchronously, at the moment, the internal space of the oil cylinder is enlarged, the pressure intensity of pressure oil in the oil cavity is reduced, oil is injected into the oil cylinder through the one-way valve, and the effect of facilitating oil injection is achieved through the design.

Description

Technical Field

[0001] The utility model relates to the technical field of tensioners, in particular to a tensioner assembly which is convenient for oil injection. Background Art

[0002] Heavy engineering machinery, such as excavators, often use crawler chassis. The crawler tracks need to use tensioners to control the tension of the crawler tracks. When in use, the oil cylinder is installed on the vehicle body, and the tensioner wheel is against the inner side of the crawler track. When the pressure oil in the oil chamber is too little, the tension of the crawler track will be insufficient. At this time, pressurized oil needs to be injected into the oil chamber. Since the pressure of the crawler track on the tensioner wheel is directly transmitted to the oil cylinder, the pressure of the pressure oil in the oil chamber is relatively high. When filling the oil, a pressurizing device is required to inject the pressurized oil into the oil chamber. The existing pressurizing equipment is not convenient to carry with the vehicle, and it is inconvenient to refuel.

[0003] A patent with a search announcement number of CN211494298U discloses a tensioner assembly that is convenient for oil injection, including an oil cylinder equipped with an oil injection port, a piston installed in the oil cylinder, the piston is connected to a push rod, a tensioner wheel is installed on the push rod, a plurality of upper convex teeth are provided on the upper side of the push rod, a plurality of lower convex teeth are provided on the lower side of the push rod, a base is installed at the front end of the oil cylinder, a push rod that can move up and down is slidably connected to the base, the lower end of the push rod is located below the base, a plurality of rear convex teeth are provided on the rear side of the push rod, a plurality of front convex teeth are provided on the front side of the push rod, an upper gear meshing with the upper convex teeth and the rear convex teeth is rotatably connected to the base, and a lower gear meshing with the lower convex teeth and the front convex teeth is rotatably connected to the base. To sum up, the utility model uses a jack that can be carried on the vehicle to push out the push rod, thereby reducing the pressure of the pressure oil in the oil chamber. The pressure oil can be injected into the oil chamber without using a pressurizing device, which makes refueling convenient and improves economic benefits. The patent requires the use of a jack to push out the push rod, but some people forget to carry the jack on their cars, and the gear rack will wear during use. In this patent, it is inconvenient to maintain the gear rack. Summary of the invention

[0004] In view of the deficiencies of the prior art, the utility model provides a tensioner assembly that is convenient for oil filling, which solves the problem that a jack is needed to push out the push rod, but some people forget to carry the jack on their vehicles, making it inconvenient to fill oil.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tensioner assembly for convenient oil injection, comprising an oil cylinder, a piston is slidably connected inside the oil cylinder, a push rod is fixedly connected to the upper surface of the piston, a base is installed on the upper surface of the oil cylinder, the push rod is slidably connected to the inside of the base, a tensioning block is fixedly connected to the upper surface of the push rod, a mounting block is installed inside the push rod, a rack is fixedly connected to one side of the mounting block, a rotating shaft is rotatably connected to the inside of the base, a gear is fixedly connected to the outer wall of the rotating shaft, the gear is meshed with the rack, a rotating rod is installed at one end of the rotating shaft, an anti-slip pad is fixedly connected to the outer wall of the rotating rod, a refueling pipe is fixedly connected to the bottom end of the oil cylinder, and a one-way valve is fixedly connected to the outer wall of the refueling pipe.

[0006] As a preferred technical solution of the utility model, a fixing plate is fixedly connected inside the oil cylinder, a sealing ring is fixedly connected inside the fixing plate, and the push rod is slidably connected to the inner wall of the sealing ring.

[0007] As a preferred technical solution of the utility model, the base includes a first shell and a second shell, and connecting plates are fixedly connected on both sides of the lower surfaces of the first shell and the second shell, and connecting grooves are slidably connected to the outer walls of the connecting plates, and the connecting grooves are opened on both sides of the upper surface of the cylinder.

[0008] As a preferred technical solution of the utility model, buckles are fixedly connected on both sides of one end of the first shell, and a slot is clamped on the outer wall of the buckle, and the slot is opened at one end of the second shell.

[0009] As a preferred technical solution of the utility model, connecting rods are fixedly connected to both sides of one end of the second shell, and the outer wall of the connecting rod is slidably connected to a connecting hole, which is opened at one end of the first shell.

[0010] As a preferred technical solution of the utility model, first screw holes are opened on both sides of the oil cylinder, the inner walls of the first screw holes are threadedly connected with first screws, the first screw holes penetrate the connecting plate, and the rotating shaft is fixedly connected to the rotating rod by rivets.

[0011] As a preferred technical solution of the utility model, the outer wall of the push rod is provided with a mounting groove, the mounting block is slidably connected to the inner wall of the mounting groove, the outer wall of the push rod is provided with a second screw hole, the inner wall of the second screw hole is threadedly connected with a second screw, and the second screw hole passes through the mounting block.

[0012] Compared with the prior art, the utility model provides a tensioner assembly that is convenient for oil injection and has the following beneficial effects:

[0013] 1. This tensioner assembly, which is convenient for oil injection, drives the rotating shaft to rotate by rotating the rotating rod. The rotating shaft drives the gear to rotate during the rotation process. The gear drives the rack to move during the rotation process. The rack drives the push rod to move upward during the movement process. During the upward movement of the push rod, the piston also moves upward synchronously. At this time, the internal space of the oil cylinder is expanded, and the pressure of the oil in the oil chamber is reduced. At this time, oil can be injected into the oil cylinder through the one-way valve. This design achieves the effect of convenient oil injection.

[0014] 2. The tensioner assembly is convenient for oil injection. The first screw is taken out from the first screw hole by rotating the first screw, and the base is removed from the oil cylinder by pulling the base upward, and then the first shell is separated from the second shell by pulling the first shell, and the second screw is taken out from the second screw hole by rotating the second screw, and then the mounting block is taken out from the top rod by pulling the mounting block. This design achieves the effect of facilitating the replacement of racks and gears, and facilitates the maintenance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the front view of the structure of the utility model;

[0016] Figure 2 It is a three-dimensional schematic diagram of the structure of the utility model;

[0017] Figure 3 This is a structural breakdown diagram of the utility model;

[0018] Figure 4 It is a schematic diagram of the structure of the connecting hole part of the utility model.

[0019] In the figure: 1. oil cylinder; 2. piston; 3. push rod; 4. fixing plate; 5. sealing ring; 6. base; 601. first shell; 602. second shell; 603. connecting plate; 604. connecting groove; 605. buckle; 606. slot; 607. connecting rod; 608. connecting hole; 7. second screw; 8. tensioning block; 9. mounting block; 10. rack; 11. rotating shaft; 12. gear; 13. rotating rod; 14. anti-skid pad; 15. refueling pipe; 16. one-way valve; 17. first screw hole; 18. first screw; 19. rivet; 20. mounting groove; 21. second screw hole. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0021] See also Figure 1-4 In this embodiment: a tensioner assembly convenient for oil injection includes an oil cylinder 1, a piston 2 is slidably connected inside the oil cylinder 1, a push rod 3 is fixedly connected to the upper surface of the piston 2, a base 6 is installed on the upper surface of the oil cylinder 1, the push rod 3 is slidably connected inside the base 6, a tensioning block 8 is fixedly connected to the upper surface of the push rod 3, a mounting block 9 is installed inside the push rod 3, a rack 10 is fixedly connected to one side of the mounting block 9, a rotating shaft 11 is rotatably connected inside the base 6, a gear 12 is fixedly connected to the outer wall of the rotating shaft 11, the gear 12 is meshed with the rack 10, a rotating rod 13 is installed at one end of the rotating shaft 11, and an anti-slip The bottom end of the oil cylinder 1 is fixedly connected with a filling pipe 15, and the outer wall of the filling pipe 15 is fixedly connected with a one-way valve 16. The rotating shaft 11 is driven to rotate by rotating the rotating rod 13. The rotating shaft 11 drives the gear 12 to rotate during the rotation. The gear 12 drives the rack 10 to move during the rotation. The rack 10 drives the push rod 3 to move upward during the movement. The piston 2 also moves upward synchronously during the upward movement of the push rod 3. At this time, the internal space of the oil cylinder 1 is expanded, and the pressure of the oil in the oil chamber is reduced. At this time, the inside of the oil cylinder 1 can be filled with oil through the one-way valve 16. This design achieves the effect of convenient oil filling.

[0022] As a preferred embodiment, the interior of the oil cylinder 1 is fixedly connected to a fixing plate 4, the interior of the fixing plate 4 is fixedly connected to a sealing ring 5, and the push rod 3 is slidably connected to the inner wall of the sealing ring 5. This design achieves the effect of preventing the pressurized oil from leaking from the oil cylinder 1. Example

[0023] See also Figure 1-4 In this implementation scheme:

[0024] As a preferred embodiment, the base 6 includes a first shell 601 and a second shell 602. Both sides of the lower surfaces of the first shell 601 and the second shell 602 are fixedly connected with connecting plates 603. The outer wall of the connecting plate 603 is slidably connected with a connecting groove 604. The connecting groove 604 is arranged on both sides of the upper surface of the oil cylinder 1. Both sides of one end of the first shell 601 are fixedly connected with buckles 605. The outer wall of the buckle 605 is clamped with a clamping groove 606. The clamping groove 606 is arranged at one end of the second shell 602. Both sides of one end of the second shell 602 are fixedly connected with connecting rods 607. The outer wall of the connecting rod 607 is slidably connected with connecting holes 608. The connecting holes 608 are arranged at one end of the first shell 601. Both sides of the oil cylinder 1 A first screw hole 17 is provided, and a first screw 18 is threadedly connected to the inner wall of the first screw hole 17. The first screw hole 17 passes through the connecting plate 603. The rotating shaft 11 is fixedly connected to the rotating rod 13 by a rivet 19. The first screw 18 is taken out from the first screw hole 17 by rotating the first screw 18, and the base 6 is removed from the oil cylinder 1 by pulling the base 6 upward, and then the first shell 601 is pulled apart from the second shell 602. During the separation of the first shell 601 from the second shell 602, the buckle 605 slides out of the slot 606, and the connecting rod 607 slides out of the connecting hole 608. This design facilitates the replacement and maintenance of the gear 12.

[0025] As a preferred embodiment, a mounting groove 20 is provided on the outer wall of the push rod 3, and the mounting block 9 is slidably connected to the inner wall of the mounting groove 20. A second screw hole 21 is provided on the outer wall of the push rod 3, and the inner wall of the second screw hole 21 is threadedly connected with a second screw 7. The second screw hole 21 passes through the mounting block 9, and the mounting block 9 is removed from the push rod 3 by pulling the mounting block 9. This design facilitates the replacement of the rack 10 and the gear 12, and the above design facilitates the maintenance of the device.

[0026] The working principle and use process of the utility model are as follows: when the device needs to be used, the rotating shaft 11 is driven to rotate by rotating the rotating rod 13, and the rotating shaft 11 drives the gear 12 to rotate during the rotation process, and the gear 12 drives the rack 10 to move during the rotation process, and the rack 10 drives the push rod 3 to move upward during the movement process, and the piston 2 also moves upward synchronously during the upward movement of the push rod 3. At this time, the internal space of the oil cylinder 1 is expanded, and the pressure of the oil in the oil chamber is reduced. At this time, the inside of the oil cylinder 1 can be filled with oil through the one-way valve 16. After the oil filling is completed, the use of the device is completed;

[0027] When the device needs to be maintained, the first screw 18 is removed from the first screw hole 17 by rotating the first screw 18, and the base 6 is removed from the cylinder 1 by pulling the base 6 upward, and then the first shell 601 is pulled to separate the first shell 601 from the second shell 602, and the second screw 7 is removed from the second screw hole 21 by rotating the second screw 7, and then the mounting block 9 is pulled out of the top rod 3, and the gear 12 and the rack 10 can be replaced at this time.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A tensioner assembly convenient for oil injection, comprising an oil cylinder (1), characterized in that: The inside of the oil cylinder (1) is slidably connected to a piston (2), the upper surface of the piston (2) is fixedly connected to a push rod (3), the upper surface of the oil cylinder (1) is mounted with a base (6), the push rod (3) is slidably connected to the inside of the base (6), the upper surface of the push rod (3) is fixedly connected to a tensioning block (8), a mounting block (9) is mounted inside the push rod (3), one side of the mounting block (9) is fixedly connected to a rack (10), the inside of the base (6) is rotatably connected to a rotating shaft (11), the outer wall of the rotating shaft (11) is fixedly connected to a gear (12), the gear (12) meshes with the rack (10), one end of the rotating shaft (11) is mounted with a rotating rod (13), the outer wall of the rotating rod (13) is fixedly connected to an anti-slip pad (14), the bottom end of the oil cylinder (1) is fixedly connected to a refueling pipe (15), the outer wall of the refueling pipe (15) is fixedly connected to a one-way valve (16).

2. The tensioner assembly for convenient oil injection according to claim 1, characterized in that: A fixing plate (4) is fixedly connected inside the oil cylinder (1), a sealing ring (5) is fixedly connected inside the fixing plate (4), and the push rod (3) is slidably connected to the inner wall of the sealing ring (5).

3. The tensioner assembly for convenient oil injection according to claim 1, characterized in that: The base (6) comprises a first shell (601) and a second shell (602); both sides of the lower surfaces of the first shell (601) and the second shell (602) are fixedly connected with connecting plates (603); the outer walls of the connecting plates (603) are slidably connected with connecting grooves (604); and the connecting grooves (604) are provided on both sides of the upper surface of the oil cylinder (1).

4. The tensioner assembly for convenient oil injection according to claim 3, characterized in that: Buckles (605) are fixedly connected to both sides of one end of the first shell (601), and a slot (606) is snapped onto the outer wall of the buckle (605), and the slot (606) is provided at one end of the second shell (602).

5. The tensioner assembly for convenient oil injection according to claim 3, characterized in that: Connecting rods (607) are fixedly connected to both sides of one end of the second shell (602), and connecting holes (608) are slidably connected to the outer wall of the connecting rod (607), and the connecting hole (608) is opened at one end of the first shell (601).

6. The tensioner assembly for convenient oil injection according to claim 1, characterized in that: First screw holes (17) are provided on both sides of the oil cylinder (1), and first screws (18) are threadedly connected to the inner walls of the first screw holes (17). The first screw holes (17) penetrate the connecting plate (603), and the rotating shaft (11) is fixedly connected to the rotating rod (13) via rivets (19).

7. The tensioner assembly for convenient oil injection according to claim 1, characterized in that: The outer wall of the push rod (3) is provided with a mounting groove (20), the mounting block (9) is slidably connected to the inner wall of the mounting groove (20), the outer wall of the push rod (3) is provided with a second screw hole (21), the inner wall of the second screw hole (21) is threadedly connected with a second screw (7), and the second screw hole (21) passes through the mounting block (9).

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