A single-wheel hydraulic clamp with four rollers on both sides controlled by a single cylinder

Abstract

The present invention discloses a single-wheel hydraulic clamp for double-sided four-roller clamping controlled by a single cylinder, which relates to the technical field of mechanical production equipment, including a clamp assembly, the clamp assembly including a mounting seat, a pair of symmetrically mounted clamping plates fixedly mounted on the bottom of the mounting seat, a first slide rail fixedly mounted on the side of the clamping plate, clamping assemblies slidably mounted on both ends of the clamping plate through the first slide rail, a heat insulation cover fixedly mounted on the bottom of the clamping plate, a hydraulic telescopic rod for controlling the movement of the clamping assembly fixedly mounted between the two clamping plates, and a double-sided synchronous displacement assembly provided between the two clamping assemblies; the present invention realizes the placement of a whole stack of rough-made wheels with a heaviest weight of 1.3t individually on a separate trolley in a quenching furnace, thereby improving the efficiency of heavy-duty wheel production and the stability of the hydraulic manipulator in clamping workpieces, the manipulator's repeated positioning accuracy can reach ±2mm, the clamp can withstand the high temperature of 600°C of workpieces taken out of a slow cooling furnace, and realizes stable operation in harsh high-temperature environments.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical production equipment, in particular to a single-wheel hydraulic clamp controlled by a single cylinder for clamping four rollers on both sides. Background Art

[0002] Currently, the domestic heavy-duty wheel production process requires transferring the forged wheels from the slow cooling furnace to a turntable. The stacked wheels are then individually transferred to the quenching furnace. The wheel temperature is around 600°C. Manual transfer, or manual operation with auxiliary tools, is not only inefficient and impacts production, but also poses a high risk of safety accidents. Therefore, the loading and unloading of these wheels, as well as the change of wheel production stations, can only be handled by automated equipment, such as heavy-duty manipulators.

[0003] However, the clamps of existing manipulators cannot operate stably for extended periods and are expensive to manufacture. Not only are they unstable and lacking stability when gripping wheels, risking slippage, but they also cannot operate reliably under the high temperatures radiating from the wheels, making them difficult to meet the practical needs of wheel production. Therefore, a hydraulic clamp has been proposed to address these needs. Summary of the Invention

[0004] The present invention discloses a single-wheel hydraulic clamp that controls the clamping of four rollers on both sides with a single cylinder. This type of manipulator can effectively solve the shortcomings of the background technology and realizes the synchronous contraction of the clamping jaws in both directions using only a single oil cylinder, thereby reducing manufacturing costs and improving the working efficiency of the wheel rolling line.

[0005] Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion. An insulating sleeve is provided between the contact surfaces of the claw heads, and the insulating sleeve separates the boom from the high-temperature wheel to prevent the claw heads from transferring too much heat to the boom when they contact the high-temperature wheel, thereby causing deformation; the bilateral synchronous displacement assembly includes a bearing seat, and the bearing seat is fixedly installed between the two clamping plates. The bottom of the bearing seat is rotatably installed with a first helical gear, and the surface of the first helical gear is meshingly connected to a first rack. There are two first racks, and a guide bar is fixedly installed at the bottom of the first rack, and one end of the guide bar is fixedly installed with the clamping claw; the output end of the hydraulic telescopic rod is movably connected to one of the clamping claws, and the clamping claw is driven to move by the hydraulic telescopic rod. In conjunction with the bilateral synchronous displacement assembly, the two clamping claws can be controlled to move at the same time, and then the protruding edge of the claw head can clamp the wheel rim to realize the function of vertically grasping a single wheel.

[0006] In some embodiments, the projected area of ​​the heat insulation cover is not less than the projected area of ​​the clamp assembly to ensure that the bottom of the clamp assembly can be effectively shielded and protected during use, thereby improving the service life of the reinforcement assembly. The surface of the heat insulation cover is provided with a long groove for the passage of the boom. A first mounting bracket is fixedly installed on the top of the heat insulation cover, and the top of the first mounting bracket is fixedly installed with the clamping plate. Second mounting brackets are fixedly installed on both sides of the top of the heat insulation cover, and a third mounting bracket is fixedly installed on the side of the second mounting bracket, and the third mounting bracket is fixedly installed between the two clamping plates.

[0007] In some embodiments, a buffer seat is provided on the top of the mounting seat, and the buffer seat includes a mounting cover covering the top of the mounting seat. A buffer assembly is provided on the top of the mounting seat to provide buffering when the clamp assembly collides with the wheel workpiece. A micro-displacement sensor is fixedly installed on the top of the mounting seat to send a collision signal after a collision occurs, so that the lifting assembly can brake in time. The displacement end of the micro-displacement sensor is fixedly mounted on the mounting cover.

[0008] In some embodiments, the buffer assembly includes a guide column, a spring and an energy absorbing seat, the top of the guide column is movably sleeved in the opening at the top of the mounting cover, the bottom of the guide column is fixedly mounted on the top of the spring, the spring is fixedly mounted on the top of the mounting seat, the top of the spring is movably sleeved with the energy absorbing seat, and the top of the energy absorbing seat is movably sleeved on the bottom of the mounting cover.

[0009] In some embodiments, the lifting assembly includes a lifting rod fixedly mounted on the top of the buffer seat, a second rack fixedly mounted on the side of the lifting rod, a movable frame movably mounted on the surface of the lifting rod, a reduction motor fixedly mounted on the side of the movable frame, and an output end of the reduction motor fixedly mounted with a second bevel gear meshing with the surface of the second rack to control the lifting and lowering of the movable frame.

[0010] In some embodiments, a second slide rail is fixedly installed on both sides of the lifting rod, and the movable frame includes a first mounting plate and a second mounting plate, and a first connecting plate and a second connecting plate are fixedly installed between the first mounting plate and the second mounting plate respectively, and a slider matching the second slide rail is fixedly installed on the side of the first connecting plate and the second connecting plate close to the lifting rod, and a protective cover is fixedly installed on the side of the second mounting plate, and the protective cover covers the side of the second bevel gear, further disclosing the structure of the movable frame.

[0011] In some embodiments, a linear displacement sensor is fixedly mounted on the top of the second connecting plate, and an output end of the linear displacement sensor is fixedly mounted on the side of the lifting rod to facilitate controlling the position of the clamp assembly.

[0012] Compared with related technologies, the single-wheel hydraulic clamp with four rollers on both sides controlled by a single cylinder provided by the present invention has the following beneficial effects:

[0013] The present invention provides a single-wheel hydraulic clamp with double-sided four-roller clamping controlled by a single cylinder. A single hydraulic telescopic rod is used to realize the synchronous contraction of the clamp in both directions, which reduces the manufacturing cost and improves the working efficiency of the wheel rolling line. After using this type of manipulator clamp, it is possible to place a whole stack of rough-made wheels with the heaviest weight of 1.3t individually on a separate trolley in the quenching furnace, thereby improving the efficiency of heavy-duty wheel production and the stability of the hydraulic manipulator in clamping the workpiece. The manipulator's repeated positioning accuracy can reach ±2mm, and the clamp can withstand the high temperature of 600℃ of the workpiece taken out of the slow cooling furnace, realizing stable operation in harsh high-temperature environments, improving the working life of the clamp, and solving the problems of the existing domestic manipulator clamps such as the inability to operate stably for a long time, high cost, loose clamping, and inability to operate stably at high temperatures. It can meet the needs of complex and high-intensity working environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 Schematic diagram of the mobile frame structure of the present invention Figure 1 ;

[0016] Figure 3 Schematic diagram of the mobile frame structure of the present invention Figure 2 ;

[0017] Figure 4 This is a schematic diagram of the installation structure of the clamp assembly of the present invention;

[0018] Figure 5 It is a schematic diagram of the cross-sectional three-dimensional structure of the clamp assembly of the present invention;

[0019] Figure 6 It is a cross-sectional view of the clamp assembly of the present invention.

[0020] Numbers in the figure: 1, clamp assembly; 2, lifting assembly; 11, mounting seat; 12, buffer seat; 13, clamping plate; 14, first slide rail; 15, clamping assembly; 16, heat shield; 17, hydraulic telescopic rod; 18, bilateral synchronous displacement assembly; 121, mounting cover; 122, buffer assembly; 123, micro displacement sensor; 151, clamping claw; 152, suspension rod; 153, claw head; 161, first mounting bracket; 162, second mounting bracket; 163, third mounting bracket Mounting frame; 181, bearing seat; 182, first bevel gear; 183, first rack; 184, guide bar; 1221, guide column; 1222, spring; 1223, energy absorbing seat; 21, lifting rod; 23, second slide rail; 24, second rack; 25, reduction motor; 26, second bevel gear; 27, protective cover; 28, linear displacement sensor; 221, first mounting plate; 222, second mounting plate; 223, first connecting plate; 224, second connecting plate. DETAILED DESCRIPTION

[0021] Embodiment 1, by Figure 1-6The present invention includes a clamping assembly 1 and a lifting assembly 2 for controlling the lifting of the clamping assembly 1. The clamping assembly 1 includes a mounting seat 11. A pair of symmetrically mounted clamping plates 13 are fixedly mounted on the bottom of the mounting seat 11. A first slide rail 14 is fixedly mounted on the side of the clamping plate 13. Clamping assemblies 15 are slidably mounted on both ends of the clamping plate 13 through the first slide rail 14. A heat insulation cover 16 is fixedly mounted on the bottom of the clamping plate 13. A hydraulic telescopic rod 17 for controlling the movement of the clamping assembly 15 is fixedly mounted between the two clamping plates 13. A bilateral synchronous displacement assembly 18 is provided between the two clamping assemblies 15. The clamping assembly 15 includes a clamping claw 151. A suspension rod 152 is fixedly mounted on both sides of the bottom of the clamping claw 151. The suspension rod 152 The bottom edge is raised and matches the wheel rim. The bottom end of the boom 152 is fixedly sleeved with a roller-shaped claw head 153, and an insulating sleeve is provided between the contact surface of the boom 152 and the claw head 153; the bilateral synchronous displacement assembly 18 includes a bearing seat 181, and the bearing seat 181 is fixedly installed between the two clamping plates 13. The bottom of the bearing seat 181 is rotatably installed with a first bevel gear 182, and the surface of the first bevel gear 182 is meshingly connected to the first rack 183. There are two first racks 183, and a guide bar 184 is fixedly installed at the bottom of the first rack 183. One end of the guide bar 184 is fixedly installed with the clamping jaw 151; the output end of the hydraulic telescopic rod 17 is movably connected to one of the clamping jaws 151.

[0022] In this embodiment, after the output end of the hydraulic telescopic rod 17 drives one of the clamping jaws 151 to move, the clamping jaw 151 is fixed to the first rack 183 through the guide bar 184. At this time, the first rack 183 will also follow the movement of the clamping jaw 151. While moving, the clamping jaw 151 will engage with the first bevel gear 182 to drive the first bevel gear 182 to rotate, and the other clamping jaw 151 also engages with the center first bevel gear 182 in the same way. Therefore, under the drive of the first bevel gear 182, the clamping jaw 151 on the other side also moves synchronously, thereby causing the suspension rods 152 on both sides to retract inward at the same time or loosen the suspension rods 152. Among them, the provided heat insulation sleeve separates the boom 152 from the high-temperature wheel, preventing the claw head 153 from transferring too much heat to the boom 152 when it contacts the high-temperature wheel, thereby causing deformation; the claw head 153 is in the shape of a roller. When the two jaws 151 and four claw heads 153 clamp a single wheel diagonally, the protruding edge of the claw head 153 can clamp the wheel rim, thereby realizing the function of vertically grasping a single wheel. Only a single hydraulic telescopic rod 17 is used to realize the two-way synchronous contraction of the jaws 151, which reduces the manufacturing cost while also improving the working efficiency of the wheel rolling line.

[0023] Example 2. On the basis of Example 1, the projected area of ​​the heat insulation cover 16 is not less than the projected area of ​​the clamp assembly 1 to ensure that the bottom of the clamp assembly 1 can be effectively shielded and protected during use. A long groove for the suspension rod 152 to pass through is provided on the surface of the heat insulation cover 16. A first mounting bracket 161 is fixedly installed on the top of the heat insulation cover 16. The top of the first mounting bracket 161 is fixedly installed on the clamping plate 13. Second mounting brackets 162 are fixedly installed on both sides of the top of the heat insulation cover 16. A third mounting bracket 163 is fixedly installed on the side of the second mounting bracket 162. The third mounting bracket 163 is fixedly installed between the two clamping plates 13.

[0024] In this embodiment, the heat insulation cover 16 ensures the movable space of the suspension rod 152 by the long groove, and can effectively reduce the impact of the heat radiation of the high-temperature wheel on the clamp assembly 1, thereby improving the service life of the clamp assembly 1; the heat insulation cover 16 is made of stainless steel, and the bottom surface of the heat insulation cover 16 is provided with a heat insulation board, which can be made of fibrous heat insulation materials such as rock wool and glass wool. There are a large number of air pores inside these materials, and the thermal conductivity of air is very low (about 0.026W / (m·K)), which can effectively prevent heat conduction. The heat insulation coating; a heat insulation coating can be provided on the bottom of the heat insulation board, and the heat insulation coating can be a zirconium oxide ceramic coating. The melting point of zirconium oxide is as high as 2715°C, and its performance is stable in a high temperature environment of 600°C. Its thermal conductivity is low, about 2-3W / (m·K), and it has a high infrared reflectivity, which can effectively reflect thermal radiation; in addition, an alumina ceramic coating can also be used, which has a melting point of 2054°C, a thermal conductivity of about 30W / (m·K), and good chemical stability and wear resistance.

[0025] Example three, based on Example one, a buffer seat 12 is provided on the top of the mounting seat 11, and the buffer seat 12 includes a mounting cover 121 covering the top of the mounting seat 11, and a buffer assembly 122 is provided on the top of the mounting seat 11. A micro displacement sensor 123 is fixedly installed on the top of the mounting seat 11, and the displacement end of the micro displacement sensor 123 is fixedly installed on the mounting cover 121.

[0026] In this embodiment, by installing the buffer assembly 122 and the micro displacement sensor 123, when the clamp assembly 1 collides with the wheel workpiece during its vertical drop, it can not only play the role of buffering and protecting the clamp assembly 1, but the micro displacement sensor 123 can also trigger the collision signal in time, allowing the lifting assembly 2 to brake in time to avoid damage to the clamp assembly 1.

[0027] Embodiment 4. On the basis of embodiment 3, the buffer assembly 122 includes a guide column 1221, a spring 1222 and an energy absorbing seat 1223. The top of the guide column 1221 is movably sleeved in the opening at the top of the mounting cover 121. The bottom of the guide column 1221 is fixedly mounted on the top of the spring 1222. The spring 1222 is fixedly mounted on the top of the mounting seat 11. The top of the spring 1222 is movably sleeved with the energy absorbing seat 1223. The top of the energy absorbing seat 1223 is movably sleeved on the bottom of the mounting cover 121.

[0028] In this embodiment, there are four buffer components 122 , which are located at the four corners of the rectangle in the buffer seat 12 to ensure stability.

[0029] Example 5. On the basis of Example 3, the lifting assembly 2 includes a lifting rod 21 fixedly mounted on the top of the buffer seat 12, a second rack 24 is fixedly mounted on the side of the lifting rod 21, a movable frame is movably mounted on the surface of the lifting rod 21, a reduction motor 25 is fixedly mounted on the side of the movable frame, and the output end of the reduction motor 25 is fixedly sleeved with a second bevel gear 26 meshing with the surface of the second rack 24.

[0030] In this embodiment, the second bevel gear 26 is driven to rotate by the reduction motor 25 so as to engage with the second rack 24 to control the lifting of the movable frame, thereby controlling the lifting of the clamp assembly 1, thereby realizing the operation of lowering the clamp assembly 1 and lifting the wheel.

[0031] Example 6, based on Example 5, has second slide rails 23 fixedly mounted on both sides of the lifting rod 21. The moving frame includes a first mounting plate 221 and a second mounting plate 222. A first connecting plate 223 and a second connecting plate 224 are fixedly mounted between the first mounting plate 221 and the second mounting plate 222, respectively. Sliders matching the second slide rails 23 are fixedly mounted on the sides of the first connecting plate 223 and the second connecting plate 224 near the lifting rod 21. A protective cover 27 is fixedly mounted on the side of the second mounting plate 222, and the protective cover 27 covers the side of the second bevel gear 26. A linear displacement sensor 28 is fixedly mounted on the top of the second connecting plate 224, and the output end of the linear displacement sensor 28 is fixedly mounted to the side of the lifting rod 21.

[0032] In this embodiment, the movable frame also moves laterally through the slide to realize the displacement of the wheel, and the positioning accuracy of the movable frame is increased by cooperating with the slider through the set multiple second slide rails 23. Among them, the linear displacement sensor 28 is set to facilitate the control of the position of the clamp assembly 1.

[0033] This clamp has been installed on the 8# manipulator in the high-temperature quenching loading and unloading gantry truss handling project and put into actual production use, achieving the expected effect and meeting production needs.

[0034] Working principle: After the output end of the hydraulic telescopic rod 17 drives one of the clamping jaws 151 to move, the clamping jaw 151 is fixed to the first rack 183 through the guide bar 184. At this time, the first rack 183 will also follow the movement of the clamping jaw 151. The clamping jaw 151 will mesh with the first bevel gear 182 while moving, driving the first bevel gear 182 to rotate, and the other clamping jaw 151 is also meshed with the first bevel gear 182 in the center in the same way. Therefore, under the drive of the first bevel gear 182, the clamping jaw 151 on the other side also moves synchronously, so that the booms 152 on both sides are simultaneously contracted inward or the booms 152 are loosened. Among them, the provided heat insulation sleeve separates the boom 152 from the high-temperature wheel to prevent the claw head 153 from transferring too much heat to the boom 152 when it contacts the high-temperature wheel, thereby causing deformation; The head 153 is shaped like a roller. When the two clamping jaws 151 and four claws 153 clamp a single wheel diagonally, the protruding edge of the claw head 153 can clamp the wheel rim, thereby realizing the function of vertically grasping a single wheel. Moreover, only a single hydraulic telescopic rod 17 is used to realize the bidirectional synchronous contraction of the clamping jaws 151, which reduces the manufacturing cost and improves the working efficiency of the wheel rolling line; the heat insulation cover 16 can effectively reduce the impact of the heat radiation of the high-temperature wheel on the clamp assembly 1, and improve the working life of the clamp assembly 1; the buffer seat 12 provided can not only play the role of buffering and protecting the clamp assembly 1 when the clamp assembly 1 collides with the wheel workpiece during the vertical fall, but the micro displacement sensor 123 can also trigger the collision signal in time, so that the lifting assembly 2 can brake in time to avoid damage to the clamp assembly 1.

Claims

1. A single-wheel hydraulic clamp with four rollers on both sides controlled by a single cylinder, comprising a clamp assembly (1) and a lifting assembly (2) for controlling the lifting of the clamp assembly (1), characterized in that: The clamp assembly (1) includes a mounting seat (11), a pair of symmetrically mounted clamping plates (13) are fixedly mounted on the bottom of the mounting seat (11), a first slide rail (14) is fixedly mounted on the side of the clamping plate (13), clamping assemblies (15) are slidably mounted on both ends of the clamping plate (13) through the first slide rail (14), a heat insulation cover (16) is fixedly mounted on the bottom of the clamping plate (13), a hydraulic telescopic rod (17) for controlling the movement of the clamping assembly (15) is fixedly mounted between the two clamping plates (13), and a bilateral synchronous displacement assembly (18) is provided between the two clamping assemblies (15); The clamping assembly (15) includes a clamping claw (151), and a suspension rod (152) is fixedly installed on both sides of the bottom of the clamping claw (151), the bottom edge of the suspension rod (152) is raised and matches the wheel rim, and the bottom end of the suspension rod (152) is fixedly sleeved with a roller-shaped claw head (153), and a heat insulation sleeve is provided between the contact surface of the suspension rod (152) and the claw head (153); The bilateral synchronous displacement assembly (18) includes a bearing seat (181), the bearing seat (181) is fixedly installed between two clamping plates (13), a first bevel gear (182) is rotatably installed at the bottom of the bearing seat (181), the surface of the first bevel gear (182) is meshingly connected to a first rack (183), there are two first racks (183), a guide bar (184) is fixedly installed at the bottom of the first rack (183), and one end of the guide bar (184) is fixedly installed with the clamping claw (151); The output end of the hydraulic telescopic rod (17) is movably connected to one of the clamping claws (151); A buffer seat (12) is provided on the top of the mounting seat (11), the buffer seat (12) includes a mounting cover (121) covering the top of the mounting seat (11), a buffer assembly (122) is provided on the top of the mounting seat (11), a micro displacement sensor (123) is fixedly mounted on the top of the mounting seat (11), and a displacement end of the micro displacement sensor (123) is fixedly mounted on the mounting cover (121); The lifting assembly (2) includes a lifting rod (21) fixedly mounted on the top of the buffer seat (12), a second rack (24) fixedly mounted on the side of the lifting rod (21), a movable frame movably mounted on the surface of the lifting rod (21), a reduction motor (25) fixedly mounted on the side of the movable frame, and a second bevel gear (26) fixedly mounted on the output end of the reduction motor (25) meshing with the surface of the second rack (24).

2. A single-wheel hydraulic clamp with four rollers on both sides controlled by a single cylinder according to claim 1, characterized in that: The projected area of ​​the heat shield (16) is not less than the projected area of ​​the clamp assembly (1) to ensure that the bottom of the clamp assembly (1) can be effectively shielded and protected during use. The surface of the heat shield (16) is provided with a long groove for the suspension rod (152) to pass through. A first mounting frame (161) is fixedly installed on the top of the heat shield (16). The top of the first mounting frame (161) is fixedly installed with the clamping plate (13). Second mounting frames (162) are fixedly installed on both sides of the top of the heat shield (16). A third mounting frame (163) is fixedly installed on the side of the second mounting frame (162). The third mounting frame (163) is fixedly installed between the two clamping plates (13).

3. The single-wheel hydraulic clamp with double-sided four-roller clamping controlled by a single cylinder according to claim 1, characterized in that: The buffer assembly (122) comprises a guide column (1221), a spring (1222) and an energy absorbing seat (1223), the top of the guide column (1221) being movably sleeved in an opening at the top of the mounting cover (121), the bottom of the guide column (1221) being fixedly mounted on the top of the spring (1222), the spring (1222) being fixedly mounted on the top of the mounting seat (11), the top of the spring (1222) being movably sleeved with the energy absorbing seat (1223), and the top of the energy absorbing seat (1223) being movably sleeved on the bottom of the mounting cover (121).

4. The single-wheel hydraulic clamp with double-sided four-roller clamping controlled by a single cylinder according to claim 1, characterized in that: The second slide rails (23) are fixedly mounted on both sides of the lifting rod (21); the movable frame comprises a first mounting plate (221) and a second mounting plate (222); a first connecting plate (223) and a second connecting plate (224) are fixedly mounted between the first mounting plate (221) and the second mounting plate (222); a slider matching the second slide rail (23) is fixedly mounted on one side of the first connecting plate (223) and the second connecting plate (224) close to the lifting rod (21); a protective cover (27) is fixedly mounted on the side of the second mounting plate (222); the protective cover (27) covers the side of the second bevel gear (26).

5. A single-wheel hydraulic clamp with four rollers on both sides controlled by a single cylinder according to claim 4, characterized in that: A linear displacement sensor (28) is fixedly mounted on the top of the second connecting plate (224), and an output end of the linear displacement sensor (28) is fixedly mounted on the side of the lifting rod (21).

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