An automatic chain pressing machine for large-tonnage chain rails

Abstract

The present invention relates to the field of pressing technology, specifically to an automated chain pressing machine for large-tonnage chain rails, comprising a base, a conveyor, a mounting frame and a push frame, and also comprising a hydraulic cylinder, a mounting assembly, a locating pin, a hydraulic push rod, a clamping frame, a pressure plate and a limit assembly. The two hydraulic cylinders are respectively connected to both sides of the base, and the two mounting assemblies are respectively connected to adjacent ends of the hydraulic cylinder, the locating pin is connected to adjacent ends of the mounting assembly, the hydraulic push rod and the clamping frame are both connected to the mounting frame, the lower end of the hydraulic push rod is connected to the mounting assembly, the pressure plate is connected to the hydraulic cylinder, the limit assembly is connected to the lower side of the mounting frame, and one end of the pressure plate extends to the upper side of the limit assembly. The present invention transforms axial pressure splicing into screw-in pressure splicing, and uses the tangential force generated by the screw-in to overcome the instantaneous friction generated during the installation process, thereby reducing the pressure required during installation and effectively avoiding compressive deformation of the chain rail segments.

Description

Technical Field

[0001] The invention relates to the technical field of press-fitting, in particular to an automatic chain pressing machine for large-tonnage chain rails. Background Art

[0002] A chain track is a device used for traveling construction machinery such as excavators and bulldozers. It is used to bear the weight of the equipment and enable the equipment to move on complex terrain. The chain track is mainly composed of chain track segments, pins and roller sleeves. The automatic chain press is a commonly used chain track splicing device.

[0003] The working principle of an automated chain press is as follows: first, the pin and roller sleeve are connected and placed on a positioning frame, then the track segment is connected to the output end of the hydraulic cylinder. After the hydraulic cylinder is activated, one end of the first track segment is pushed onto the roller sleeve, and one end of the second track segment is pushed onto the pin. By continuously applying pressure, the first track segment is engaged with the roller sleeve, and the second track segment is engaged with the pin. When press-fitting some large-tonnage track chains, the contact area between the track segment, the pin, and the roller sleeve is large, resulting in greater pressure being applied to the track segment during press-fitting. This greater pressure can easily cause surface deformation of the track segment, which in turn affects the overall strength and service life of the track.

[0004] In response to the above problems, some solutions have been proposed in the prior art. For example, before press-fitting, the inner ring of the track segment is first heated. By utilizing the thermal expansion effect of the metal, the diameter of the inner ring of the track segment is increased, thereby reducing the friction between the track segment and the pin shaft and the roller sleeve, so as to achieve the purpose of reducing the pressure required for press-fitting. However, when the inner ring of the track segment is heated, the high temperature can easily cause the strength of the track segment to change, affecting the service life of the track. If the heating temperature is low, it is easy to cause the inner ring of the track segment to expand less, resulting in that during the press-fitting process, a large pressure is still required to connect the track segment to the pin shaft and the roller sleeve, resulting in poor effect in reducing the pressure applied by the hydraulic cylinder.

[0005] Therefore, an automatic chain pressing machine for large-tonnage chain rails is proposed. Summary of the Invention

[0006] The purpose of the present invention is to provide an automated chain pressing machine for large-tonnage chain rails, which solves the problem that when large-tonnage chain rails are pressed, the friction between the chain rail segments and the pin roller sleeves causes the hydraulic cylinder to need to apply greater pressure to the chain rail segments for press-fitting, causing the pressure surface of the chain rail segments to deform, thereby affecting the service life of the chain rails. By converting axial pressure splicing into screw-in pressure splicing, the tangential force generated by the screw-in is used to overcome the instantaneous friction generated during the installation process, thereby reducing the pressure required during installation and effectively avoiding the compression deformation of the chain rail segments.

[0007] When an object is heated, the atoms or molecules inside it will vibrate more due to the increase in thermal energy, causing the size of the material to change, that is, the object will undergo a thermal expansion effect. As the temperature rises, the chain track segment will expand outward, including its inner hole. Therefore, the inner hole of the chain track segment will become larger.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] An automatic chain press for a large-tonnage chain rail comprises a base, a conveyor, a mounting frame and a push frame, wherein the conveyor is arranged at the rear side of the base, the mounting frame is connected between the two ends of the top of the base, the push frame is connected to the middle part of the base, and further comprises a hydraulic cylinder, a mounting assembly, a positioning pin, a hydraulic push rod, a clamping frame, a pressure plate and a limit assembly, wherein two hydraulic cylinders are respectively connected to both sides of the base, two mounting assemblies are respectively connected to adjacent ends of the hydraulic cylinders, the positioning pins are connected to adjacent ends of the mounting assembly, the hydraulic push rod and the clamping frame are both connected to the mounting frame, and the The lower end of the hydraulic push rod is connected to the mounting assembly, the pressure plate is connected to the hydraulic cylinder, the limit assembly is connected to the lower side of the mounting frame, and one end of the pressure plate extends to the upper side of the limit assembly, and pin roller sleeves are placed on the push frame and the clamping frame, and a chain track segment is sleeved on the positioning pin. When the hydraulic cylinder pushes the chain track segment to fit with the two pin roller sleeves, the pressure plate pushes the limit assembly downward. When the hydraulic cylinder applies pressure, the hydraulic push rod drives the chain track segment to swing through the mounting assembly. During the swinging of the chain track segment, the pressure plate intermittently pushes the limit assembly to fit with the pin roller sleeve at the swinging end of the chain track segment.

[0010] Through the above scheme, when the chain track segment and the pin roller sleeve are spliced, the hydraulic push rod applies rotational power to the pin roller sleeve through the installation component and the limit component, so that when the hydraulic cylinder pushes the chain track segment to be sleeved on the pin roller sleeve, the pin roller sleeve is sleeved in a screw-in shape, and the shearing force generated during the rotation of the pin roller sleeve is used to reduce the instantaneous friction between the chain track segment and the pin roller sleeve, thereby achieving the purpose of reducing the applied pressure and ensuring product quality. At the same time, the limit component intermittently fits with the pin roller sleeve, so that the shearing force is intermittently generated, that is, the chain track segment and the pin roller sleeve are rotated and vertically entered alternately, thereby effectively ensuring the installation efficiency.

[0011] Preferably, the mounting assembly includes a rotating rod, a turntable, a swing arm and a sleeve rod, the rotating rod is connected to one end of the hydraulic cylinder close to the push frame, the turntable is connected to one end of the rotating rod close to the push frame, one end of the swing arm is connected to the turntable, the sleeve rod is connected to the lower side of the hydraulic push rod, and the other end of the swing arm is sleeved on the sleeve rod. When the push frame is not moved, the axis of the rotating rod is coaxial with the axis of the pin roller sleeve on the push frame.

[0012] Through the above solution, when the hydraulic push rod moves downward, the turntable can be driven to swing through the sleeve rod and the swing arm. The axis of the rotating rod and the axis of the pin roller sleeve are coaxial, which effectively improves the stability during the rotation process.

[0013] Preferably, the limiting assembly includes an elastic telescopic rod, a baffle, a connecting plate and a limiting piece, the elastic telescopic rod is connected to the lower side of the mounting frame, the elastic telescopic rod, the baffle, the connecting plate and the limiting piece are connected in sequence from top to bottom, and wavy textures are provided on both sides of the upper surface of the baffle.

[0014] Through the above scheme, when the pressure plate slides on the upper surface of the baffle, the pressure plate contacts the wavy texture on the upper surface of the baffle, which causes the baffle to move up and down, so that the limiter intermittently contacts the pin roller sleeve, realizing intermittent rotation of the pin roller sleeve, and then the chain track section and the pin roller sleeve are rotated and vertically entered alternately, effectively ensuring the installation efficiency of the chain track section and the pin roller sleeve.

[0015] Preferably, the pressure plate includes a plate body and a pressure block, one end of the plate body is connected to the power output end of the hydraulic cylinder, the plate body is "L"-shaped, the pressure block is connected to the other end of the plate body, and the lower end of the pressure block close to the baffle side is inclined.

[0016] With the above solution, the lower end of the pressing block close to the baffle is inclined, and when the hydraulic cylinder drives the plate body close to the push frame, the pressing block will contact the baffle, thereby forcing the baffle to move downward.

[0017] Preferably, the positioning pin includes an upper push rod, a lower push rod, a pin rod, a fixed rod, a spring and a chain, the upper push rod and the lower push rod are respectively connected to the upper and lower sides of the adjacent sides of the turntable, the pin rod and the fixed rod are respectively slidably connected to the upper push rod and the lower push rod, the two springs are respectively connected to the side of the pin rod and the fixed rod away from the push frame, a chain is provided on the surface of the pin rod and the fixed rod, and the chain passes through the upper push rod and the lower push rod, and the inner diameter values ​​at both ends of the chain are equal.

[0018] Through the above scheme, when the chain track segment and the pin roller sleeve are connected, the rotational power of the pin roller sleeve in contact with the limiting assembly can be transmitted to the pin roller sleeve in contact with the push frame, thereby causing the pin roller sleeve to rotate relative to the chain track segment, generating a shearing force, thereby facilitating the installation of the chain track segment and the pin roller sleeve. The inner diameter values ​​at both ends of the chain are equal, so that the pin rod and the fixed rod rotate at the same frequency, thereby facilitating the stability of the pin roller sleeve and the chain track segment when they are screwed in.

[0019] Preferably, a slot is provided on the side of the pin rod close to the push frame, a buffer pad is attached to the side of the pin rod and the fixed rod close to the push frame, and an anti-slip texture is provided on the side of the buffer pad close to the pin roller sleeve.

[0020] Through the above scheme, the opening of the groove facilitates the limiting of the pin roller sleeve on the bracket, the setting of the buffer pad can reduce the impact force when the pin roller sleeve contacts the pin rod and the fixed rod, and the anti-slip texture facilitates the power transmission between the pin rod, the fixed rod and the pin roller sleeve.

[0021] Preferably, the limiting component includes an airbag, a slide groove, a slider, a side plate, a card plate and a rubber pad, the airbag is connected to the upper side of the baffle, the slide groove is opened on the lower side of the connecting plate, and the airbag is connected to the slide groove, the slider is connected in the slide groove, the rubber pad is connected to the lower side of the slider, the side plate is connected to the left and right sides of the rubber pad, and the card plate is connected to the lower side of the mounting frame. When the baffle moves down to the extreme position, the side plate and the card plate fit together.

[0022] Through the above solution, the rubber pad can be limited, thereby ensuring the limiting effect on the pin roller sleeve when the rubber pad contacts the pin roller sleeve, so that the pin roller sleeve rotates stably.

[0023] Preferably, the distance between the left and right ends of the slide groove gradually increases from the back to the front, and the slider is designed in sections.

[0024] Through the above solution, the distance between the left and right ends of the slide groove gradually increases from back to front, thereby making the volume of the slide groove gradually increase from back to front, so that the extension range of the rubber pad gradually shortens as the slider moves.

[0025] Preferably, the card frame is slidably connected to the mounting frame, a push spring is provided between the top of the card frame and the mounting frame, the card frame is in an "F" shape, and the baffle contacts the card frame when it moves down to a specified position.

[0026] Through the above solution, when the baffle moves down to the specified position, it contacts the bracket, and then when the baffle moves down to the specified position, it can push the bracket to move down, so that the bracket is separated from the pin roller sleeve.

[0027] Preferably, a non-slip pad is connected to the surface of the card plate, and the upper side of the non-slip pad is wavy.

[0028] Through the above solution, the upper side of the anti-slip pad is wavy, which effectively improves the friction between the anti-slip pad and the side panel, thereby effectively improving the limiting effect of the anti-slip pad on the side panel.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. The present invention solves the problem that when large-tonnage chain rails are press-fitted, the friction between the chain rail section and the pin roller sleeve causes the hydraulic cylinder to apply greater pressure to the chain rail section for press-fitting, causing the pressure surface of the chain rail section to deform, thereby affecting the service life of the chain rail. By setting up an installation component, when the chain rail section and the pin roller sleeve are spliced, the hydraulic push rod drives the chain rail section to swing around the rotating rod through the swing arm and the turntable, so that the chain rail section is transformed into a horizontal shape, which is convenient for continuous processing and improves production efficiency. In the process of the chain rail section swinging, the rubber pad applies resistance to the pin roller sleeve at the swinging end of the chain rail section, and then the pin roller sleeve at the swinging end of the chain rail section rotates due to friction with the rubber pad. By utilizing the shearing force generated during the rotation process, the instantaneous friction between the chain rail section and the pin roller sleeve is effectively reduced, thereby reducing the installation pressure of the hydraulic cylinder and ensuring the service life of the chain rail.

[0031] 2. By setting the positioning pin, the pin roller sleeve at the swing end rotates to drive the pin rod to rotate. The pin rod drives the other pin roller sleeve through the chain and the fixed rod. The inner diameter values ​​at both ends of the chain are the same, so that the two pin roller sleeves rotate at the same frequency, ensuring the uniformity of the two pin roller sleeves during the screwing process, making the connection depth of the pin roller sleeves at both ends of the chain track segment uniform, and improving the press-fitting quality of the chain track segment and the pin roller sleeve.

[0032] 3. By setting a limit assembly, the contact surface between the baffle and the pressure block is wavy. When the pressure block slides on the baffle surface, the elastic telescopic rod will intermittently drive the rubber pad to move upward through the baffle, so that the rubber pad is separated from the pin roller sleeve. During the process of connecting with the pin roller sleeve, the chain track segment moves vertically. The undulating setting of the baffle surface makes the rotary shear force between the pin roller sleeve and the chain track segment intermittently generated, realizing the reduction of instantaneous friction through rotary shear force and then linear pressure, effectively ensuring the installation efficiency of the chain track segment. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic structural diagram of the present invention as a whole;

[0034] Figure 2 This is a schematic diagram of the structure of the installation component part of the present invention;

[0035] Figure 3 It is a structural schematic diagram of the limiting component part of the present invention;

[0036] Figure 4 It is a structural schematic diagram of the pressing plate part of the present invention;

[0037] Figure 5 It is a structural schematic diagram of the positioning pin part of the present invention;

[0038] Figure 6 For the present invention Figure 4 A magnified schematic diagram of point A in the middle;

[0039] Figure 7 It is a structural schematic diagram of the card frame part of the present invention;

[0040] Figure 8 This is a schematic diagram of the state in which the positioning pin of the present invention is fitted with the pin roller sleeve.

[0041] In the figure: 1, base; 2, conveyor; 3, mounting frame; 4, push frame; 5, hydraulic cylinder; 6, mounting assembly; 601, rotating rod; 602, turntable; 603, swing arm; 604, sleeve rod; 7, positioning pin; 701, upper push rod; 702, lower push rod; 703, pin rod; 7031, notch; 704, fixed rod; 7041, buffer pad; 705, spring; 706, chain; 8, hydraulic push rod; 9, bracket; 901, push rod Spring; 10. Pressure plate; 1001. Plate body; 1002. Pressure block; 11. Limiting assembly; 1101. Elastic telescopic rod; 1102. Baffle; 1103. Connecting plate; 1104. Limiting piece; 11041. Airbag; 11042. Slide groove; 11043. Slider; 11044. Side plate; 11045. Card; 110451. Anti-slip pad; 11046. Rubber pad; 12. Pin roller sleeve; 13. Track link. DETAILED DESCRIPTION

[0042] The following, in conjunction with the accompanying drawings of the embodiments of the present invention, clearly and completely describes the technical solutions of the embodiments of the present invention, making its working state and structural features more detailed. Obviously, the embodiments described are only partial embodiments of the present invention and are not complete embodiments. Based on the embodiments of the present invention, other embodiments obtained by ordinary technicians in this field without making any creative ideas are all within the scope of protection of the present invention.

[0043] See also Figures 1 to 8 The present invention provides an automatic chain press for large-tonnage chain rails, and the technical solution is as follows:

[0044] For details, please refer to Figures 1 to 8The lifting mechanism 11 is a kind of lifting mechanism that lifts up and down of lifting up, and the lifting mechanism 11 is a kind of lifting mechanism that lifts up and down. A pin roller sleeve 12 is provided. The pin roller sleeve 12 on the push frame 4 is located at the lower side of the pin roller sleeve 12 on the card frame 9. The pin roller sleeve 12 is spliced ​​by the pin and the roller sleeve. The pin and the roller sleeve can rotate. A conveying end is provided on the push frame 4. The conveying end of the push frame 4 can push the pin roller sleeve 12 to move backward, and the push frame 4 can be moved down and then reset. In the process of resetting the push frame 4, it will not contact the pin roller sleeve 12 pushed to the rear side. The pin roller sleeve 12 on the rear side will move to the conveyor 2, and a chain track segment 13 is sleeved on the positioning pin 7. When the hydraulic cylinder 5 pushes the chain track segment 13 to fit with the two pin roller sleeves 12, the pressure plate 10 pushes the limiting assembly 11 downward. When the hydraulic cylinder 5 applies pressure, the hydraulic push rod 8 drives the chain track segment 13 to swing through the mounting assembly 6. During the swinging process of the chain track segment 13, the pressure plate 10 intermittently pushes the limiting assembly 11 to fit with the pin roller sleeve 12 at the swinging end of the chain track segment 13.

[0045] By setting up the hydraulic cylinder 5, the power output end of the hydraulic cylinder 5 applies pressure to the track link 13, so that the track link 13 fits on the pin roller sleeve 12, and the pressure is applied to make the track link 13 and the pin roller sleeve 12 fit together. During the process of the hydraulic cylinder 5 applying pressure, the hydraulic push rod 8 drives the track link 13 to swing through the mounting assembly 6, and applies resistance to the pin roller sleeve 12 at one end during the swinging of the track link 13, so that the pin roller sleeve 12 at the swinging end of the track link 13 rotates. When the pin roller sleeve 12 rotates, a shearing force is generated between the pin roller sleeve 12 and the track link 13, thereby reducing the instantaneous friction between the track link 13 and the pin roller sleeve 12, and effectively reducing the pressure required for press-fitting.

[0046] As an embodiment of the present invention, refer to Figure 2 、 Figure 3 、 Figure 4 、 Figure 6 and Figure 8The mounting assembly 6 includes a rotating rod 601, a turntable 602, a swing arm 603 and a sleeve rod 604. The rotating rod 601 is fixedly connected to one end of the hydraulic cylinder 5 close to the push frame 4. The turntable 602 is rotatably connected to the end of the rotating rod 601 close to the push frame 4. One end of the swing arm 603 is connected to the turntable 602. The sleeve rod 604 is connected to the lower side of the hydraulic push rod 8. The lower side of the hydraulic push rod 8 is the power output end. The other end of the swing arm 603 is sleeved on the sleeve rod 604. When the output end of the hydraulic push rod 8 moves downward, the traction sleeve rod 604 moves downward. The swing arm 603 is driven downward by the sleeve rod 604, and the swing arm 603 drives the turntable 602 to swing around the rotating rod 601. When the push frame 4 is not moved, the axis of the rotating rod 601 is coaxial with the axis of the pin roller sleeve 12 on the push frame 4. The limiting assembly 11 includes an elastic telescopic rod 1101, a baffle 1102, a connecting plate 1103 and a limiting member 1104. The elastic telescopic rod 1101 is connected to the lower side of the mounting frame 3, and the fixed end of the elastic telescopic rod 1101 is connected to the mounting frame 3. The elastic telescopic rod 1101, the baffle 1102 , the connecting plate 1103 and the limiter 1104 are connected in sequence from top to bottom, the movable end of the elastic telescopic rod 1101 is connected to the baffle 1102, and the two sides of the upper surface of the baffle 1102 are provided with wavy textures, and the wavy texture on the upper surface of the baffle 1102 is provided with crests and troughs, and the crests are higher than the troughs. The pressing plate 10 includes a plate body 1001 and a pressing block 1002. One end of the plate body 1001 is connected to the power output end of the hydraulic cylinder 5. The plate body 1001 moves with the hydraulic cylinder 5. The plate body 1001 is "L" shaped, and the pressing block 1002 is connected to the other end of the plate body 1001, and the lower end of the pressure block 1002 close to the baffle 1102 is inclined. The inclined surface of the pressure block 1002 is in contact with the baffle 1102. The wavy texture on the surface of the baffle 1102 facilitates the smooth transition of the pressure block 1002 on the surface of the baffle 1102. When the output end of the hydraulic cylinder 5 moves closer, the inclined surface of the pressure plate 10 will be driven to squeeze the baffle 1102, causing the baffle 1102 to move downward. The downward movement of the baffle 1102 drives the limiter 1104 to move closer to the pin roller sleeve 12 on the upper side.

[0047] By setting the limit assembly 11, in the process of the hydraulic cylinder 5 driving the locating pin 7 to approach the pin roller sleeve 12, the pressure block 1002 will squeeze the baffle 1102 to move downward, so that the limit member 1104 is close to the pin roller sleeve 12 on the bracket 9. When the pressure block 1002 moves to the upper side of the baffle 1102, the pressure block 1002 will contact the wavy texture on the upper surface of the baffle 1102. When the pressure block 1002 contacts the crest of the wavy texture, the pressure block 1002 will push the baffle 1102 to move further downward, so that the limit member 1104 is fitted with the pin roller sleeve 12. When the pressure block 1002 contacts the trough of the wavy texture, the elastic telescopic rod 1101 will drive the baffle 1102 to move upward, so that the limit member 1104 is separated from the pin roller sleeve 12.

[0048] As an embodiment of the present invention, refer to Figure 5 and Figure 8 When the cam 702 is in the closed position, the upper and lower ends of the cam 703 are in the closed position, and the upper and lower ends of the cam 703 are in the closed position, so that the cam 702 can be opened and closed. When the locking cam 705 is in the unlock state, the locking cam 706 is in the unlock state, and the locking cam 706 is in the unlock state, so that the locking cam 706 can be unlocked.

[0049] By setting the positioning pin 7, the chain track segment 13 is sleeved on the pin rod 703 and the fixed rod 704. As the hydraulic cylinder 5 pushes, the pin rod 703 and the fixed rod 704 will contact the pin roller sleeve 12. Further movement of the hydraulic cylinder 5 will cause the pin rod 703 and the fixed rod 704 to shrink, and the upper push rod 701 and the lower push rod 702 will fit on the side of the chain track segment 13. The upper push rod 701 and the lower push rod 702 are supported by the turntable 602 to push the chain track segment 13 to be sleeved on the pin roller sleeve 12. In the process of contact between the pin rod 703 and the fixed rod 704 and the pin roller sleeve 12, the pin rod 703 and the fixed rod 704 will first push the pin roller sleeve 12 to the middle, and then apply force. At this time, the pin rod 703 and the fixed rod 704 will move synchronously, thereby ensuring the stability of the chain 706.

[0050] As an embodiment of the present invention, refer to Figure 6 、 Figure 7 and Figure 8The limiting member 1104 includes an airbag 11041, a slide 11042, a slider 11043, a side plate 11044, a card plate 11045 and a rubber pad 11046. The airbag 11041 is connected to the upper side of the baffle 1102, and the slide 11042 is opened on the lower side of the connecting plate 1103. The airbag 11041 is connected to the slide 11042. When the airbag 11041 is pressurized, the gas in the airbag 11041 flows into the slide 11042. The slider 11043 is connected to the slide 11042. Then, when the gas in the slide 11042 increases, it pushes The movable slider 11043 moves, the rubber pad 11046 is connected to the lower side of the slider 11043, the slider 11043 mobilizes the rubber pad 11046 to move, the side plate 11044 is connected to the left and right sides of the rubber pad 11046, the card plate 11045 is connected to the lower side of the mounting frame 3, and the side plate 11044 contacts the card plate 11045 when it moves down to the limit position. When the pressure block 1002 contacts the peak of the surface of the baffle 1102, the side plate 11044 fits with the card plate 11045. When the pressure block 1002 contacts the peak of the surface of the baffle 1102, the baffle 1102 moves down to the limit. The distance between the left and right ends of the slide 11042 gradually increases from the back to the front. The slider 11043 is designed in a segmented manner, that is, the slider 11043 is divided into three sections, and the three sections are slidably connected. Through the three-section sliding connection of the slider 11043, the slider 11043 can adapt to the width change of the slide 11042 to ensure the sealing effect. The two ends of the slider 11043 are clamped in the slide 11042, and the card frame 9 is slidably connected to the mounting frame 3. A push spring 901 is provided between the top of the card frame 9 and the mounting frame 3. When the pin roller sleeve 12 is placed on the card frame 9, the card frame 9 will not be pressed. The push spring 901 contracts, and the card frame 9 becomes "F"-shaped. When the baffle 1102 moves down to the specified position, it contacts the card frame 9, and then presses the card frame 9 to move down, so that the card frame 9 is separated from the pin roller sleeve 12 (the pin roller sleeve 12 on the card frame 9 is transformed into the pin roller sleeve 12 at the swing end of the chain track segment 13 after being connected with the chain track segment 13), which facilitates the swinging of the pin roller sleeve 12 at the swing end of the chain track segment 13. The surface of the card plate 11045 is connected with an anti-slip pad 110451, and the upper side of the anti-slip pad 110451 is wavy, which effectively increases the friction and improves the limiting effect of the side plate 11044.

[0051] By setting the limit piece 1104, the rubber pad 11046 slides on the lower side of the connecting plate 1103 through the clamping plate 11045, and the airbag 11041 is squeezed by the pressing block 1002, so that the slider 11043 drives the rubber pad 11046 to extend, thereby increasing the contact angle between the pin roller sleeve 12 and the rubber pad 11046. At the same time, the extension of the rubber pad 11046 can form a protection, thereby reducing the possibility of foreign matter entering. After the pressing is completed, the airbag 11041 is reset and then drives the rubber pad 11046 to reset through the slider 11043, effectively reducing the occupied area of ​​the rubber pad 11046 and facilitating loading.

[0052] When the chain press assembles the track segment 13 and the pin roller sleeve 12, they are mainly connected by the pressure of the hydraulic cylinder 5. For large-tonnage chain rails, the installation surface area of ​​a single track segment 13 and the pin roller sleeve 12 is large. When the track segment 13 and the pin roller sleeve 12 are spliced ​​together, the friction resistance between the pin roller sleeve 12 and the track segment 13 is large, which results in the hydraulic cylinder 5 requiring a large pressure to push the track segment 13 to be connected to the pin roller sleeve 12. The large pressure will cause the pressure surface of the track segment 13 to deform, affecting the quality of the finished chain rail. This solution causes the pin roller sleeve 12 to rotate when the track segment 13 is connected to the pin roller sleeve 12, and a shearing force is generated between the pin roller sleeve 12 and the track segment 13, thereby reducing the instantaneous friction between the track segment 13 and the pin roller sleeve 12, thereby reducing the pressure on the track segment 13 during press-fitting. The specific solution is as follows:

[0053] Place the two pin roller sleeves 12 on the push frame 4 and the clamping frame 9 respectively, and then put the two chain track segments 13 on the positioning pins 7 on both sides respectively. At this time, the two ends of the single chain track segment 13 are respectively sleeved on the pin rod 703 and the fixed rod 704, and the upper push rod 701 and the lower push rod 702 are fitted on the side wall of the chain track segment 13. The hydraulic cylinder 5 pushes the positioning pin 7 to move closer to the push frame 4 through the installation component 6. When the positioning pin 7 contacts the pin roller sleeve 12, the pin rod 703 and the fixed rod 704 begin to shrink into the inner cavity of the upper push rod 701 and the lower push rod 702. At this time, the upper push rod 701 and the lower push rod 702 push The track segment 13 is sleeved onto the pin roller sleeve 12. During the pushing process of the hydraulic cylinder 5, the hydraulic cylinder 5 drives the pressure plate 10 to squeeze the limit assembly 11, so that the limit assembly 11 moves closer to the pin rod 703 located on the bracket 9. As the hydraulic cylinder 5 applies further pressure, the track segment 13 is sleeved onto the pin roller sleeve 12 for a section. During this sleeved section, the pressure block 1002 squeezes the bracket 9 downward through the baffle 1102, so that the bracket 9 is separated from the pin roller sleeve 12 (the pin roller sleeve 12 on the bracket 9 is transformed into the pin roller sleeve 12 at the swing end of the track segment 13 after being sleeved onto the track segment 13).

[0054] As the connection depth between the track link 13 and the pin roller sleeve 12 increases, the friction between the track link 13 and the pin roller sleeve 12 will cause the resistance to the movement of the track link 13 to increase. This solution causes the pin roller sleeve 12 to rotate during the connection process between the track link 13 and the pin roller sleeve 12, and utilizes the shearing force generated between the rotation of the pin roller sleeve 12 and the track link 13, which can effectively reduce the instantaneous friction and thus reduce the output pressure of the hydraulic cylinder 5. The specific solution is as follows: after the bracket 9 moves downward and separates from the pin roller sleeve 12, the hydraulic push rod 8 drives the sleeve rod 604 to move downward, and the sleeve rod 604 pulls the turntable 602 to swing around the rotating rod 601 through the swing arm 603, and the turntable 602 drives the track link 13 to swing through the positioning pin 7. At this time, the pressure block 1002 moves to the upper side of the baffle 1102 and contacts the surface of the baffle 1102. The wavy texture of the chain link 13 is in contact with each other. When the pressing block 1002 moves to the crest of the wavy texture, the baffle 1102 is pressed and moved downward. The baffle 1102 moves downward and pushes the rubber pad 11046 to contact the pin roller sleeve 12 at the swing end of the chain link 13 through the connecting plate 1103. At this time, the friction between the pin roller sleeve 12 at the swing end of the chain link 13 and the rubber pad 11046 will cause the pin roller sleeve 12 at the swing end of the chain link 13 to rotate. The power of the rotation of the pin roller sleeve 12 at the swing end of the chain link 13 is transmitted to the pin rod 703. The pin rod 703 drives the fixed rod 704 to rotate through the chain 706. The friction between the fixed rod 704 and the pin roller sleeve 12 on the push frame 4 will cause the pin roller sleeve 12 on the push frame 4 to rotate, and then a shearing force is generated between the pin roller sleeve 12 on the push frame 4 and the chain link 13, which effectively reduces the pressure required for press-fitting.

[0055] In order to improve the installation efficiency, this solution performs the press-fitting operation of the large-tonnage chain rail by staggering the screw-in installation and the linear installation. The specific solution is as follows: as the power output end of the hydraulic cylinder 5 moves, the pressing block 1002 will move to the trough of the wavy texture on the surface of the baffle 1102. At this time, the elastic telescopic rod 1101 will pull the baffle 1102 to move upward, thereby driving the rubber pad 11046 to move upward, so that the rubber pad 11046 is separated from the pin roller sleeve 12 at the swing end of the chain rail segment 13. Through the movement of the pressing block 1002 on the surface of the baffle 1102, the rubber pad 11046 is intermittently in contact with the pin roller sleeve 12 at the swing end of the chain rail segment 13, thereby achieving intermittent generation of rotary shear force when the pin roller sleeve 12 and the chain rail segment 13 are press-fitted, thereby effectively improving the installation efficiency;

[0056] In order to avoid being blocked during the loading process, this solution sets the limiter 1104 to slide. As the pressing proceeds, the rubber pad 11046 will extend, thereby ensuring that the pin roller sleeve 12 at the swing end of the chain track section 13 is effectively fitted. After a single pressing is completed, the limiter 1104 is retracted, thereby facilitating loading. The specific solution is as follows: as the pressing block 1002 moves, the pressing block 1002 squeezes the airbag 11041, causing the gas in the airbag 11041 to flow into the slide 11042, thereby pushing the slider 11043 to move, and the movement of the slider 11043 drives The rubber pad 11046 moves out. In order to prevent the rubber pad 11046 from sliding when it fits against the pin roller sleeve 12 at the swing end of the chain track link 13, a clamping plate 11045 is provided. When the pressure block 1002 moves to the wave crest and the baffle 1102 moves downward, the side plate 11044 moves downward and contacts the clamping plate 11045. Then, the clamping plate 11045 limits the side plate 11044. When the pressure block 1002 moves to the wave trough and the baffle 1102 moves upward, the side plate 11044 moves upward and separates from the clamping plate 11045. At this time, the airflow pushes the slider 11043 to move.

[0057] When the pressing is completed, the chain track segment 13 is transformed into a horizontal state. At this time, the push frame 4 pushes the chain track segment 13 to move backward. After moving to the specified position, the conveying end of the push frame 4 moves down and then moves forward. After moving to the swing end of the chain track segment 13, the conveying end of the push frame 4 moves up and fits with the pin roller sleeve 12 at the swing end of the chain track segment 13. The pin roller sleeve 12 at the swing end of the chain track segment 13 is transformed into the pin roller sleeve 12 on the push frame 4. At this time, the loading operation is carried out to realize continuous production.

[0058] Although the embodiments of the present invention have been described, it is possible for those skilled in the art to change and modify the embodiments to obtain other effects with an understanding of the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic chain pressing machine for large-tonnage chain rails, comprising a base (1), a conveyor (2), a mounting frame (3) and a push frame (4), characterized in that: The invention also includes a hydraulic cylinder (5), a mounting assembly (6), a positioning pin (7), a hydraulic push rod (8), a bracket (9), a pressure plate (10) and a limit assembly (11), wherein the two hydraulic cylinders (5) are respectively connected to the two sides of the base (1), the mounting assembly (6) is connected to the adjacent ends of the hydraulic cylinders (5), the positioning pin (7) is connected to the mounting assembly (6), the hydraulic push rod (8) and the bracket (9) are both connected to the mounting frame (3), the lower end of the hydraulic push rod (8) is connected to the mounting assembly (6), the pressure plate (10) is connected to the hydraulic cylinder (5), and the limit assembly (11) is connected to the mounting assembly (6). On the lower side of the mounting frame (3), a pin roller sleeve (12) is placed on the pushing frame (4) and the clamping frame (9), and a chain track section (13) is sleeved on the positioning pin (7). When the hydraulic cylinder (5) pushes the chain track section (13) to fit with the two pin roller sleeves (12), the pressure plate (10) pushes the limiting assembly (11) downward. When the hydraulic cylinder (5) applies pressure, the hydraulic push rod (8) drives the chain track section (13) to swing through the mounting assembly (6). During the swinging of the chain track section (13), the pressure plate (10) intermittently pushes the limiting assembly (11) to fit with the pin roller sleeve (12) at the swinging end of the chain track section (13); The mounting assembly (6) includes a rotating rod (601), a turntable (602), a swing arm (603) and a sleeve rod (604), wherein the rotating rod (601) is connected to one end of the hydraulic cylinder (5) close to the push frame (4), the turntable (602) is connected to one end of the rotating rod (601) close to the push frame (4), one end of the swing arm (603) is connected to the turntable (602), the sleeve rod (604) is connected to the lower side of the hydraulic push rod (8), and the other end of the swing arm (603) is sleeved on the sleeve rod (604), and when the push frame (4) is not moved, the axis of the rotating rod (601) and the axis of the pin roller sleeve (12) on the push frame (4) are in the same straight line; The limiting assembly (11) comprises an elastic telescopic rod (1101), a baffle (1102), a connecting plate (1103) and a limiting piece (1104); the elastic telescopic rod (1101) is connected to the lower side of the mounting frame (3); the elastic telescopic rod (1101), the baffle (1102), the connecting plate (1103) and the limiting piece (1104) are connected in sequence from top to bottom; and both sides of the upper surface of the baffle (1102) are provided with wavy textures.

2. The large-tonnage automatic chain press according to claim 1, characterized in that: The pressure plate (10) comprises a plate body (1001) and a pressure block (1002), one end of the plate body (1001) is connected to the power output end of the hydraulic cylinder (5), the plate body (1001) is in an "L" shape, the pressure block (1002) is connected to the other end of the plate body (1001), and the lower end of the pressure block (1002) close to the baffle (1102) is inclined.

3. The large-tonnage automatic chain press according to claim 1, characterized in that: The positioning pin (7) includes an upper push rod (701), a lower push rod (702), a pin rod (703), a fixed rod (704), a spring (705) and a chain (706). The upper push rod (701) and the lower push rod (702) are respectively connected to the upper and lower sides of the adjacent sides of the turntable (602). The pin rod (703) and the fixed rod (704) are respectively slidably connected to the upper push rod (701) and the lower push rod (702). The two springs (705) are respectively connected to the side of the pin rod (703) and the fixed rod (704) away from the push frame (4). The surface of the pin rod (703) and the fixed rod (704) is provided with a chain (706), and the chain (706) passes through the upper push rod (701) and the lower push rod (702). The inner diameter values ​​of the two ends of the chain (706) are equal.

4. The large-tonnage automatic chain press according to claim 3, characterized in that: A notch (7031) is provided on the side of the pin rod (703) close to the push frame (4), a buffer pad (7041) is attached to the side of the pin rod (703) and the fixed rod (704) close to the push frame (4), and an anti-slip texture is provided on the side of the buffer pad (7041) close to the pin roller sleeve (12).

5. The large-tonnage automatic chain press according to claim 3, characterized in that: The limiting member (1104) includes an airbag (11041), a slide groove (11042), a slider (11043), a side plate (11044), a card plate (11045) and a rubber pad (11046). The airbag (11041) is connected to the upper side of the baffle (1102), the slide groove (11042) is provided on the lower side of the connecting plate (1103), and the airbag (11041) and the slide groove (11042) are connected. The slider (11043) is connected to the slide groove (11042), the rubber pad (11046) is connected to the lower side of the slider (11043), the side plate (11044) is connected to the left and right sides of the rubber pad (11046), and the card plate (11045) is connected to the lower side of the mounting frame (3). When the baffle (1102) moves down to the extreme position, the side plate (11044) and the card plate (11045) are in contact with each other.

6. The large-tonnage automatic chain press according to claim 5, characterized in that: The distance between the left and right ends of the slide groove (11042) gradually increases from the back to the front, and the slider (11043) is designed in sections.

7. The large-tonnage automatic chain press according to claim 5, characterized in that: The card frame (9) is slidably connected to the mounting frame (3), a push spring (901) is provided between the top of the card frame (9) and the mounting frame (3), the card frame (9) is in an "F" shape, and the baffle (1102) contacts the card frame (9) when it moves down to a specified position.

8. The large-tonnage automatic chain press according to claim 5, characterized in that: The surface of the card plate (11045) is connected to an anti-slip pad (110451), and the upper side of the anti-slip pad (110451) is wavy.

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