Hydraulic chain tightener for scraper conveyer

Abstract

The hydraulic chain tightener comprises a manual hydraulic pump and a hydraulic push rod, a hydraulic switch is arranged at one end of the manual hydraulic pump, the hydraulic switch and the hydraulic push rod are connected through a pipeline, a pressing head is arranged on the hydraulic switch, an end block is fixed to the end of the pressing head, and the end block is connected with the hydraulic push rod through a pipeline. The two sides of the end block are connected with connecting blocks in a sliding mode. Through the end block, the end column, the connecting block, the movable handle, the inner rod and the spring, the movable handle is sleeved on the end column in a sliding mode, the end column is freely installed on the end block in a sliding mode through the connecting block, after hydraulic adjustment is completed, the movable handle is loosened, and at the moment, the spring in a compressed state releases elastic force; the movable handle is pushed to drive the inner rod to be pulled out of the connecting groove, so that the end column of the inner rod freely swings on the end block again, the situation that the pressing head is driven to work due to accidental touch is avoided, the situation that the chain tightening precision is changed due to accidental touch is effectively avoided, and the chain tightening device is more reliable to use.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic chain tighteners, and in particular relates to a hydraulic chain tightener used for a scraper conveyor. Background Art

[0002] The hydraulic chain tensioner is mainly composed of a manual hydraulic pump, a reversing valve, a non-return valve, a hydraulic pipeline, a hydraulic push rod, a connecting chain ring, a chain tightening hook, etc. It is manually operated and the required chain tightening force is controlled by the staff. It is safe to use and easy to control. It is a new type of device designed for scraper conveyors. It has a compact structure, is flexible and convenient to use, is simple to operate, has a good chain tightening effect, and is safe to use. It is a more convenient and ideal product among the current chain tensioners.

[0003] When tightening the chain of a scraper conveyor, the existing hydraulic chain tightener hangs the chain tightening hook on the chute chain, then operates the oil pump, the hydraulic cylinder push rod retracts, the chain links of the two ends of the chute are pulled close to the appropriate position, and the chute chain links are connected. The oil pump is operated, the operating valve is switched, and the hydraulic cylinder push rod is extended by pressing the handle, and the chain tightening work is completed by removing the hook. However, there are the following defects:

[0004] (1) When using the existing hydraulic chain tensioner, the hydraulic control is performed manually by pressing the handle. However, the handle used for control is connected to the switch pressure head as a whole, which is easy to be accidentally touched, causing the chain tensioner to work and the position of the chute chain to change after the chain tensioner is adjusted, affecting the chain tensioning accuracy. For this reason, we propose a hydraulic chain tensioner for scraper conveyors. Utility Model Content

[0005] The utility model aims to provide a hydraulic chain tightener for a scraper conveyor to solve the problem that the hydraulic chain tightener proposed in the above background technology is easy to accidentally touch the handle during chain tightening adjustment, resulting in poor chain tightening accuracy.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hydraulic chain tightener for a scraper conveyor, comprising a manual hydraulic pump and a hydraulic push rod, a hydraulic switch is arranged at one end of the manual hydraulic pump, the hydraulic switch and the hydraulic push rod are connected by a pipeline, a pressure head is arranged on the hydraulic switch, an end block is fixed to the end of the pressure head, both sides of the end block are connected with connecting blocks by sliding, an end column is fixed to the side of the connecting block, a movable handle is sleeved on the outer wall of the end column, an inner rod passes through the inside of the end column, a connecting groove is opened on the surface of the end block, one end of the inner rod is placed inside the connecting groove, the other end of the inner rod is connected to the movable handle, a spring is arranged at one end of the end column, and the spring is inside the movable handle.

[0007] Preferably, a side groove is formed on the side wall of the end column, a side block is provided inside the side groove, and the side block is fixed on the inner wall of the movable handle.

[0008] Preferably, an anti-slip sleeve is sleeved on the outer wall of one end of the movable handle, and the longitudinal section of the anti-slip sleeve is a circular structure.

[0009] Preferably, a baffle is sleeved on the outer wall of the movable handle, and the longitudinal section of the baffle is a circular structure.

[0010] Preferably, the cross section of the connecting block is an L-shaped structure, and the longitudinal section of the end block is a semicircular structure.

[0011] Preferably, a spherical groove is formed on the end surface of the connecting block, and a ball is embedded in the spherical groove.

[0012] Preferably, both ends of the hydraulic push rod are connected with chain rings, and the chain rings are connected with hooks.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] (1) Through the designed end block, end column, connecting block, movable handle, inner rod and spring, the movable handle is slidably mounted on the end column. The end column is freely slidably installed on the end block through the connecting block. When hydraulic adjustment is required, the movable handle is pushed to drive one end of the inner rod inside to be inserted into the connecting groove on the surface of the end block. At this time, the end block and the end column can move synchronously, and then the pressure head is driven to work by pulling and pressing the movable handle. After the adjustment is completed, the movable handle is released. At this time, the spring in the compressed state releases the elastic force, pushing the movable handle to drive the inner rod to be pulled out of the connecting groove, so that the end column The movable handle can be freely swung on the end block again to prevent accidental collision and driving the pressure head to work, and can effectively avoid accidental collision and change of the tightening chain accuracy, making the utility model more reliable to use. The movable handle is limited by the designed side blocks and side grooves to prevent it from detaching from the end column. The designed anti-slip sleeve has an anti-slip effect to prevent wetness and slippage between the hand and the movable handle that affects the use. The designed baffle can ensure that the hand is against the baffle, which makes it easier to apply force to the movable handle to push it. The designed ball has a lubrication effect to reduce the friction resistance and wear between the end block and the connecting block. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 For this utility model Figure 1 A in the enlarged view;

[0017] Figure 3 It is an assembly cross-sectional view of the movable handle, end column, end block and inner rod of the utility model;

[0018] Figure 4 For this utility model Figure 3 The enlarged view of point B in the figure;

[0019] Figure 5 It is a three-dimensional diagram of the end block of the utility model;

[0020] Figure 6 It is a three-dimensional diagram of the connecting block of the utility model.

[0021] In the figure: 1. manual hydraulic pump; 2. baffle; 3. movable handle; 4. hydraulic switch; 5. hook; 6. chain link; 7. hydraulic push rod; 8. pressure head; 9. anti-slip sleeve; 10. end column; 11. connecting block; 12. end block; 13. ball; 14. spring; 15. inner rod; 16. connecting groove; 17. side groove; 18. side block. DETAILED DESCRIPTION

[0022] 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.

[0023] Example

[0024] See also Figures 1 to 6The utility model provides a technical solution: a hydraulic chain tightener for a scraper conveyor, comprising a manual hydraulic pump 1 and a hydraulic push rod 7, a hydraulic switch 4 is arranged at one end of the manual hydraulic pump 1, the hydraulic switch 4 and the hydraulic push rod 7 are connected by a pipeline, a pressure head 8 is arranged on the hydraulic switch 4, both ends of the hydraulic push rod 7 are connected with a chain ring 6, a hook 5 is connected to the chain ring 6, an end block 12 is fixed to the end of the pressure head 8, both sides of the end block 12 are connected with a connecting block 11 by sliding, and the side of the connecting block 11 The end block 12 is provided with an end column 10, the outer wall of the end column 10 is provided with a movable handle 3, the interior of the end column 10 is penetrated by an inner rod 15, the surface of the end block 12 is provided with a connecting groove 16, one end of the inner rod 15 is placed in the connecting groove 16, the other end of the inner rod 15 is connected to the movable handle 3, and a spring 14 is provided at one end of the end column 10. Through the designed end block 12, end column 10, connecting block 11, movable handle 3, inner rod 15 and spring 14, the movable handle 3 is slidably mounted on the end column 10, and the end column 10 is freely slidably mounted on the end block 12 through the connecting block 11. When hydraulic adjustment is required, the movable handle 3 is pushed to drive one end of the inner rod 15 inside to be inserted into the connecting groove 16 on the surface of the end block 12. At this time, the end block 12 and the end column 10 can move synchronously, and then the pressure head 8 is driven to work by pulling and pressing the movable handle 3. After the adjustment is completed, the movable handle 3 is released. The spring 14 in the compressed state releases its elastic force, pushing the movable handle 3 to drive the inner rod 15 to be pulled out of the connecting groove 16. Out, so that the end column 10 is again in the free swing on the end block 12, to prevent accidental collision and drive the pressure head 8 to work, effectively avoid accidental collision and change the tightening chain accuracy, make the utility model more reliable to use, and the spring 14 is inside the movable handle 3, the side wall of the end column 10 is provided with a side groove 17, the side groove 17 is provided with a side block 18, through the designed side block 18 and side groove 17, the movable handle 3 is limited to avoid detachment from the end column 10, and the side block 18 is fixed to the inner wall of the movable handle 3.

[0025] In the present embodiment, preferably, an anti-skid sleeve 9 is sleeved on the outer wall of one end of the movable handle 3. The designed anti-skid sleeve 9 can play an anti-skid role to prevent the hand and the movable handle 3 from getting wet and slippery and affecting the use. The longitudinal section of the anti-skid sleeve 9 is a circular structure. The outer wall of the movable handle 3 is sleeved on the baffle 2. The designed baffle 2 can ensure that the hand is against the baffle 2, which makes it easier to apply force to the movable handle 3 to push it. The longitudinal section of the baffle 2 is a circular structure, the cross-section of the connecting block 11 is an L-shaped structure, the longitudinal section of the end block 12 is a semicircular structure, and a spherical groove is provided on the end face of the connecting block 11. The spherical groove is inlaid with a ball 13. The designed ball 13 can play a lubricating role to reduce the friction resistance and wear between the end block 12 and the connecting block 11.

[0026] The working principle and use process of the utility model are as follows: the movable handle 3 is slidably mounted on the end column 10, and the end column 10 is freely slidably installed on the end block 12 through the connecting block 11. When hydraulic adjustment is required, the movable handle 3 is pushed to drive one end of the inner rod 15 inside to be inserted into the connecting groove 16 on the surface of the end block 12. At this time, the end block 12 and the end column 10 can move synchronously, and then the pressure head 8 is driven to work by pulling and pressing the movable handle 3. After the adjustment is completed, the movable handle 3 is released. At this time, the spring 14 in the compressed state releases the elastic force, pushing the movable handle 3 to drive the inner rod 15 to be pulled out from the connecting groove 16, so that the end column 10 is free to swing on the end block 12 again, preventing accidental collision from driving the pressure head 8 to work, effectively avoiding accidental collision from changing the tightening chain accuracy, and making the use of the utility model more reliable.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic chain tightener for a scraper conveyor, comprising a manual hydraulic pump (1) and a hydraulic push rod (7), wherein one end of the manual hydraulic pump (1) is provided with a hydraulic switch (4), the hydraulic switch (4) and the hydraulic push rod (7) are connected by a pipeline, and a pressure head (8) is provided on the hydraulic switch (4), characterized in that: An end block (12) is fixed to the end of the pressure head (8), and both sides of the end block (12) are connected to connecting blocks (11) by sliding. An end column (10) is fixed to the side of the connecting block (11), and the outer wall of the end column (10) is sleeved with a movable handle (3). An inner rod (15) passes through the interior of the end column (10). A connecting groove (16) is provided on the surface of the end block (12), one end of the inner rod (15) is placed inside the connecting groove (16), and the other end of the inner rod (15) is connected to the movable handle (3). A spring (14) is provided at one end of the end column (10), and the spring (14) is inside the movable handle (3).

2. A hydraulic chain tightener for a scraper conveyor according to claim 1, characterized in that: The side wall of the end column (10) is provided with a side groove (17), the interior of the side groove (17) is provided with a side block (18), and the side block (18) is fixed on the inner wall of the movable handle (3).

3. A hydraulic chain tightener for a scraper conveyor according to claim 2, characterized in that: An anti-slip sleeve (9) is sleeved on the outer wall of one end of the movable handle (3), and the longitudinal section of the anti-slip sleeve (9) is a circular structure.

4. A hydraulic chain tightener for a scraper conveyor according to claim 3, characterized in that: The outer wall of the movable handle (3) is sleeved with a baffle (2), and the longitudinal section of the baffle (2) is a circular structure.

5. The hydraulic chain tightener for a scraper conveyor according to claim 1, characterized in that: The cross section of the connecting block (11) is an L-shaped structure, and the longitudinal section of the end block (12) is a semicircular structure.

6. A hydraulic chain tightener for a scraper conveyor according to claim 5, characterized in that: The end surface of the connection block (11) is provided with a spherical groove, and a ball (13) is embedded in the spherical groove.

7. The hydraulic chain tightener for a scraper conveyor according to claim 1, characterized in that: Both ends of the hydraulic push rod (7) are connected to chain links (6), and the chain links (6) are connected to hooks (5).

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