Oscillating cylinder hydraulic motor device for chain tensioning and chain tensioning method of oscillating cylinder hydraulic motor device

Abstract

The invention discloses a tilt cylinder hydraulic motor device for chain tensioning and a chain tensioning method thereof.The tilt cylinder hydraulic motor device comprises a shell, a flow distribution valve arranged on one side of the shell, an integrated valve communicating with the flow distribution valve and a hydraulic assembly arranged in the shell; the hydraulic assembly comprises a crankshaft, a plurality of tilt cylinders connected to the crankshaft and an output spline arranged at one end of the crankshaft, the output spline is connected with a non-return device, the tilt cylinders communicate with the pile-up valve, one end of each tilt cylinder is hinged to a rotating connector, and the output spline is meshed with a tensioning assembly. The tensioning assembly comprises a rotating frame, an idle gear hinged to the rotating frame and adjusting gear teeth arranged at one end of the rotating frame, the adjusting gear teeth are in meshed connection with a worm, a transmission gear is arranged in the rotating frame, the inner side of the transmission gear is meshed with the output spline, and the outer side of the transmission gear is meshed with the idle gear; the position of the idle wheel can be adjusted by rotating the adjusting column, then the chain tightening device is driven to tighten a chain, an adjusting handle does not need to be arranged on the chain tightening device, and space is saved.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical transmission, and in particular relates to a swing cylinder hydraulic motor device for chain tensioning and a chain tightening method thereof. Background Art

[0002] Hydraulic motors, also known as oil motors, are mainly used in injection molding machinery, ships, hoists, engineering machinery, construction machinery, coal mining machinery, mining machinery, metallurgical machinery, ship machinery, petrochemical industry, port machinery and other fields. High-speed motor gear motors have the advantages of small size, light weight, simple structure, good processability, insensitivity to oil pollution, impact resistance and small inertia. Especially in coal mine work, the explosion-proof requirements are high. Compared with electric motors, hydraulic motors can better meet the use requirements.

[0003] An emulsion motor is a type of hydraulic motor. In the prior art, the emulsion of the emulsion motor is set in the motor housing. During long-term use, the precision-machined parts inside the emulsion motor are easily rusted under the action of the emulsion. After rusting, the motor cannot operate flexibly or is directly blocked and can no longer be used. It must be shut down for maintenance or directly replaced, which has the disadvantages of high maintenance cost and short life.

[0004] In the prior art, the hydraulic motor and the tensioning device are installed together on the transmission device. The tensioning device is provided with an external handle, which has certain requirements on space and may interfere with other components. In addition, the structure of the disengagement and engagement of the adjustment handle is relatively complicated, and there may be jamming during operation, which affects the use effect. In summary, there is an urgent need for a swing cylinder hydraulic motor device for chain tensioning and a chain tightening method thereof. Summary of the invention

[0005] In order to solve some or all of the technical problems existing in the above-mentioned prior art, the present invention provides a swing cylinder hydraulic motor device for chain tensioning and a chain tightening method thereof.

[0006] On the one hand, the present invention provides a swing cylinder hydraulic motor device for chain tensioning, wherein the swing cylinder hydraulic motor device is connected to a chain tightening device, wherein the chain tightening device is provided with an output gear, and the swing cylinder hydraulic motor device comprises a housing, a distribution valve provided on one side of the housing, an integrated valve connected to the distribution valve, and a hydraulic component provided in the housing, wherein:

[0007] The hydraulic assembly includes a crankshaft, a plurality of sway cylinders connected to the crankshaft, an output spline arranged at one end of the crankshaft, the output spline is connected with a check device, the sway cylinder is connected to the integrated valve, a plurality of the sway cylinders are symmetrically arranged on both sides of the crankshaft along the crankshaft axis, one end of the crankshaft away from the output spline is connected to the distribution valve, one end of the sway cylinder is connected to the crankshaft through a bearing, and the other end is hinged with a rotary joint on the outer periphery, the rotary joint is hinged to the housing, and the output spline is meshed with a tensioning assembly;

[0008] The tensioning assembly includes a rotating frame, an idler wheel hinged to the rotating frame, and an adjusting gear tooth arranged at one end of the rotating frame, the adjusting gear tooth is meshedly connected with a worm, both ends of the worm are respectively connected to wear-resistant sleeves, an adjusting column is connected to the outer side of the wear-resistant sleeve on one side, a transmission gear is arranged in the rotating frame, the inner side of the transmission gear is meshed with the output spline, and the outer side is meshed with the idler wheel, and the idler wheel matches the output gear.

[0009] As a specific implementation, in the above-mentioned swing cylinder hydraulic motor device for chain tensioning, an arc-shaped cover is provided at one end of the swing cylinder away from the crankshaft, and the arc-shaped cover is matched with the housing.

[0010] As a specific implementation, in the above-mentioned swing cylinder hydraulic motor device for chain tensioning, the distribution valve includes a first valve body connected to the crankshaft and a second valve body fixed to the housing.

[0011] Furthermore, in the above-mentioned swing cylinder hydraulic motor device for chain tensioning, the integrated valve is connected to the pump station.

[0012] As a specific implementation, in the above-mentioned swing cylinder hydraulic motor device for chain tensioning, the hydraulic component is sealed and connected to the housing through a bearing and an oil seal.

[0013] As a specific implementation, in the above-mentioned swing cylinder hydraulic motor device for chain tensioning, the number of the swing cylinders is 4 to 8.

[0014] The chain tightening method of the swing cylinder hydraulic motor provided by the present invention comprises:

[0015] Step 1: The adjusting column is rotated to drive the worm to rotate. Due to the meshing between the worm and the adjusting gear teeth, the rotating frame rotates synchronously, thereby driving the idler gear to mesh with the output gear, and then the backstop device is activated;

[0016] Step 2: The distribution valve transmits the emulsion to the integrated valve, and the integrated valve controls the emulsion to be transmitted to each of the swing cylinders. The swing cylinders perform piston movement due to the hydraulic pressure difference, thereby driving the crankshaft to rotate. The crankshaft drives the output spline, the transmission gear, and the idler wheel to rotate synchronously. The idler wheel then drives the output gear to rotate, and the chain tightening device starts the chain tightening action;

[0017] Step 3: The chain tightening device continues to work until the chain tightening demand is met, the integrated valve is controlled to stop supplying fluid, the excess chain is removed, a matching adjustment chain is connected, the check device is adjusted to an empty position, the adjustment column is rotated to drive the worm to rotate, the idler wheel is disengaged from the output gear, and the chain tightening operation is completed.

[0018] The swing cylinder hydraulic motor device for chain tensioning and the chain tightening method thereof of the present invention have the following advantages and positive effects:

[0019] (1) The present invention integrates the traditional hydraulic motor structure and the tensioning device into one, and the hydraulic component completely uses emulsion as the working medium. The hydraulic component is sealed and connected to the housing through bearings and oil seals, so that the emulsion exists only in the hydraulic component, which prevents the emulsion in the swing cylinder from directly contacting the components in the housing, and avoids the failure and rust of the components in the housing due to emulsion leakage, and has good practicality;

[0020] (2) The present invention has a simple structure and is easy to assemble and disassemble. The position of the idler wheel can be adjusted by rotating the adjustment column, thereby driving the chain tightening device to tighten the chain. There is no need to set an adjustment handle on the chain tightening device, which saves space on the coal mine conveyor. The overall processing and manufacturing precision requirements of the device are low, the economy is good, and the explosion-proof performance is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings in the following descriptions are only used to further understand the embodiments of the present invention and constitute a part of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0022] Figure 1 It is a structural schematic diagram of a swing cylinder hydraulic motor device for chain tensioning of the present invention;

[0023] Figure 2 It is a structural schematic diagram of a hydraulic assembly in a swing cylinder hydraulic motor device for chain tensioning of the present invention;

[0024] Figure 3It is a structural schematic diagram of a tensioning assembly in a swing cylinder hydraulic motor device for chain tensioning of the present invention;

[0025] Figure 4 It is a structural schematic diagram of a housing in a swing cylinder hydraulic motor device for chain tensioning of the present invention;

[0026] Figure 5 It is a structural schematic diagram of a swing cylinder in a swing cylinder hydraulic motor device for chain tensioning of the present invention.

[0027] Description of reference numerals:

[0028] 1-housing, 2-distribution valve, 3-integrated valve, 4-hydraulic assembly, 41-crankshaft, 42-swing cylinder, 421-bearing, 422-arc cover, 43-output spline, 5-tensioning assembly, 51-rotating frame, 52-idling wheel, 53-worm, 54-wear-resistant sleeve, 55-adjusting column, 56-transmission gear, 57-adjusting gear teeth, 6-rotating joint. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] like Figures 1 to 5 As shown, the present invention provides a swing cylinder hydraulic motor device for chain tensioning and a chain tightening method thereof.

[0031] On the one hand, the present invention discloses a swing cylinder hydraulic motor device for chain tensioning, wherein the swing cylinder hydraulic motor device is connected to a chain tightening device (not shown in the figure), the chain tightening device is provided with an output gear, and the chain tightening device can perform a chain tightening action as the output gear rotates, and the swing cylinder hydraulic motor device comprises a housing 1, a distribution valve 2 arranged on one side of the housing 1, an integrated valve 3 connected to the distribution valve 2, and a hydraulic component 4 arranged in the housing 1, wherein the hydraulic component 4 uses an emulsion as a working medium, wherein the hydraulic component 4 comprises a crankshaft 41, a plurality of swing cylinders 42 connected to the crankshaft 41, and an output spline 43 arranged at one end of the crankshaft 41, wherein the output spline 43 is connected to a check device (not shown in the figure), and the structure of the check device is similar to the ratchet structure in the prior art, and mainly serves to prevent the output spline 43 from being reversed. The structure of the check device is not described in detail here. The swing cylinder 42 is connected to the integrated valve 3. Multiple swing cylinders 42 are symmetrically arranged on both sides of the crankshaft 41 along the axis of the crankshaft 41. The end of the crankshaft 41 away from the output spline 43 is connected to the distribution valve 2. One end of the swing cylinder 42 is connected to the crankshaft 41 through a bearing 421, and the other end is hinged with a rotary joint 6 on the outer periphery. The rotary joint 6 is hinged to the housing 1. The output spline 43 is engaged with a tensioning assembly 5. The distribution valve 2 controls the integrated valve 3 through a low-pressure pipeline. The integrated valve 3 is connected to the swing cylinder 42 through a high-pressure pipeline to achieve the purpose of low-pressure control of high pressure. Under the action of hydraulic pressure, the swing cylinder 42 performs piston movement and drives the crankshaft 41 to rotate. As the crankshaft 41 rotates, the swing cylinder 42 swings with the rotary joint 6 as a fulcrum at one end away from the crankshaft 41;The tensioning assembly 5 includes a rotating frame 51, an idler wheel 52 hinged to the rotating frame 51, and an adjusting gear 57 arranged at one end of the rotating frame 51. The adjusting gear 57 is meshed with a worm 53. In actual use, the adjusting gear 57 is a part of a turbine arranged on the outer side of the rotating frame 51 corresponding to the screw part, which matches the external thread of the worm 53. Wear-resistant sleeves 54 are respectively connected to the two ends of the worm 53, and an adjusting column 55 is connected to the outer side of the wear-resistant sleeve 54 on one side. By rotating the adjusting column 55, the idler wheel 52 can be controlled to move in the vertical and horizontal directions. The adjusting column 55 is rotated forward, and the adjusting column 55 drives the worm 53 to rotate forward. Under the meshing action of the external thread of the worm 53 and the adjusting gear 57, the rotating frame 51 rotates clockwise along the axis to move. The idler wheel 52 is driven to move upward, and the adjusting column 55 is rotated in the opposite direction. The adjusting column 55 drives the worm 53 to rotate in the opposite direction. Under the meshing action of the external thread of the worm 53 and the adjusting gear 57, the rotating frame 51 rotates counterclockwise along the axis, thereby driving the idler wheel 52 to move downward. A transmission gear 56 is arranged inside the rotating frame 51. The inner side of the transmission gear 56 meshes with the output spline 43, and the outer side meshes with the idler wheel 52. The idler wheel 52 matches the output gear. Of course, the output gear can be arranged above or below the idler wheel 52 according to the actual use situation, as long as it is ensured that the idler wheel 52 can be moved to the meshing output gear by rotating the adjusting column 55. And due to the structural characteristics of the worm 53 and the adjusting gear 57, the rotating frame 51 has a certain self-locking function. ;

[0032] As a specific embodiment, in the swing cylinder hydraulic motor device for chain tensioning of the present invention, an arc-shaped cover 422 is provided at one end of the swing cylinder 42 away from the crankshaft 41, and the arc-shaped cover 422 is matched with the shell 1. Such a configuration can make the swinging movement of the swing cylinder 42 smoother, and thus make the rotation of the crankshaft 41 more stable.

[0033] As a specific embodiment, in the swing cylinder hydraulic motor device for chain tensioning of the present invention, the distribution valve 2 includes a first valve body (not shown in the figure) connected to the crankshaft 41 and a second valve body fixed to the housing 1, wherein the first valve body rotates with the crankshaft 41 and the second valve body is fixed to the housing 1.

[0034] Furthermore, in the swing cylinder hydraulic motor device for chain tensioning of the present invention, the integrated valve 3 is connected to a pump station (not shown in the figure).

[0035] As a specific embodiment, in the swing cylinder hydraulic motor device for chain tensioning of the present invention, the hydraulic component 4 is sealed and connected to the housing 1 through bearings and oil seals. Such an arrangement allows the emulsion to exist only in the hydraulic component 4, thereby preventing the emulsion in the swing cylinder 42 from directly contacting the various components in the housing 1, thereby avoiding failure and rust of the components in the housing 1 due to contact with the emulsion.

[0036] As a specific implementation, in the swing cylinder hydraulic motor device for chain tensioning of the present invention, the number of the swing cylinders 42 is 4 to 8, more specifically, the number of the swing cylinders 42 is 4, which are symmetrically arranged on both sides along the axis of the crankshaft 41. Of course, the number of the swing cylinders 42 needs to be set according to the specific working conditions such as the shape and size of the crankshaft 41 during actual use, as long as the number of the swing cylinders 42 is an even number.

[0037] The chain tightening method of the swing cylinder 42 hydraulic motor of the present invention is implemented by using the above-mentioned swing cylinder hydraulic motor device, and specifically includes the following steps:

[0038] Step 1: The worm 53 is driven to rotate by rotating the adjusting column 55. Due to the meshing between the worm 53 and the adjusting gear 57, the rotating frame 51 rotates synchronously, thereby driving the idler gear 52 to mesh with the output gear, and then the backstop device is activated;

[0039] Step 2: The distribution valve 2 transmits the emulsion to the integrated valve 3, and the integrated valve 3 controls the emulsion to be transmitted to each swing cylinder 42. The swing cylinder 42 performs piston movement due to the hydraulic pressure difference, thereby driving the crankshaft 41 to rotate. The crankshaft 41 drives the output spline 43, the transmission gear 56, and the idler wheel 52 to rotate synchronously. The idler wheel 52 then drives the output gear to rotate, and the chain tightening device starts the chain tightening action;

[0040] Step 3: The chain tightening device continues to work until the chain tightening requirement is met, the integrated valve 3 is controlled to stop the fluid supply, the excess chain is removed, the matching adjustment chain is connected, the check device is adjusted to the empty position, the adjustment column 55 is rotated to drive the worm 53 to rotate, the idler wheel 52 is disengaged from the output gear, and the chain tightening operation is completed.

[0041] In summary, compared with the prior art, the swing cylinder hydraulic motor device for chain tensioning and the chain tightening method thereof of the present invention have the following advantages and positive effects:

[0042] (1) The present invention integrates the traditional hydraulic motor structure and the tensioning device into one, and the hydraulic component 4 completely uses emulsion as the working medium. The hydraulic component 4 is sealed and connected to the housing 1 through bearings and oil seals, so that the emulsion exists only in the hydraulic component 4, which prevents the emulsion in the swing cylinder 42 from directly contacting the components in the housing 1, and avoids the failure and rust of the components in the housing 1 due to contact with the emulsion, and has good practicality;

[0043] (2) The present invention has a simple structure and is easy to assemble and disassemble. The position of the idler wheel 52 can be adjusted by rotating the adjustment column 55, thereby driving the chain tightening device to tighten the chain. There is no need to set an adjustment handle on the chain tightening device, which saves space on the coal mine conveyor. In addition, the overall processing and manufacturing precision requirements of the device are low, the economy is good, and the explosion-proof performance is good.

[0044] It should be noted that, in this article, unless otherwise clearly specified and limited, the term "connection" or its synonyms should be understood in a broad sense. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. Moreover, expressions such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. At the same time, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a process, method, article or device. In addition, "front", "back", "left", "right", "upper" and "lower" in this article are all referenced to the placement state shown in the accompanying drawings.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A swing cylinder hydraulic motor device for chain tensioning, wherein the swing cylinder hydraulic motor device is connected to a chain tightening device, wherein the chain tightening device is provided with an output gear, characterized in that: The swing cylinder hydraulic motor device includes a housing, a distribution valve disposed on one side of the housing, an integrated valve connected to the distribution valve, and a hydraulic component disposed in the housing, wherein: The hydraulic assembly includes a crankshaft, a plurality of sway cylinders connected to the crankshaft, an output spline arranged at one end of the crankshaft, the output spline is connected with a check device, the sway cylinder is connected to the integrated valve, a plurality of the sway cylinders are symmetrically arranged on both sides of the crankshaft along the crankshaft axis, one end of the crankshaft away from the output spline is connected to the distribution valve, one end of the sway cylinder is connected to the crankshaft through a bearing, and the other end is hinged with a rotary joint on the outer periphery, the rotary joint is hinged to the housing, and the output spline is meshed with a tensioning assembly; The tensioning assembly includes a rotating frame, an idler wheel hinged to the rotating frame, and an adjusting gear tooth arranged at one end of the rotating frame, the adjusting gear tooth is meshedly connected with a worm, both ends of the worm are respectively connected to wear-resistant sleeves, an adjusting column is connected to the outer side of the wear-resistant sleeve on one side, a transmission gear is arranged in the rotating frame, the inner side of the transmission gear is meshed with the output spline, and the outer side is meshed with the idler wheel, and the idler wheel matches the output gear.

2. The swing cylinder hydraulic motor device for chain tensioning according to claim 1, characterized in that: An arc-shaped cover is arranged at one end of the swing cylinder away from the crankshaft, and the arc-shaped cover is matched with the shell.

3. The swing cylinder hydraulic motor device for chain tensioning according to claim 1, characterized in that: The distribution valve includes a first valve body connected to the crankshaft and a second valve body fixed to the housing.

4. The swing cylinder hydraulic motor device for chain tensioning according to claim 1, characterized in that: The integrated valve is connected to the pump station.

5. The swing cylinder hydraulic motor device for chain tensioning according to claim 1, characterized in that: The hydraulic assembly is sealed and connected to the housing via a bearing and an oil seal.

6. The swing cylinder hydraulic motor device for chain tensioning according to claim 1, characterized in that: The number of the swing cylinders is 4 to 8.

7. A chain tightening method for a swing cylinder hydraulic motor, the chain tightening method for a swing cylinder hydraulic motor being implemented using the swing cylinder hydraulic motor device according to any one of claims 1 to 6, comprising: Step 1: The adjusting column is rotated to drive the worm to rotate. Due to the meshing between the worm and the adjusting gear teeth, the rotating frame rotates synchronously, thereby driving the idler gear to mesh with the output gear, and then the backstop device is activated; Step 2: The distribution valve transmits the emulsion to the integrated valve, and the integrated valve controls the emulsion to be transmitted to each of the swing cylinders. The swing cylinders perform piston movement due to the hydraulic pressure difference, thereby driving the crankshaft to rotate. The crankshaft drives the output spline, the transmission gear, and the idler wheel to rotate synchronously. The idler wheel then drives the output gear to rotate, and the chain tightening device starts the chain tightening action; Step 3: The chain tightening device continues to work until the chain tightening demand is met, the integrated valve is controlled to stop supplying fluid, the excess chain is removed, a matching adjustment chain is connected, the check device is adjusted to an empty position, the adjustment column is rotated to drive the worm to rotate, the idler wheel is disengaged from the output gear, and the chain tightening operation is completed.

Images