Automatic spindle tightening device based on hydraulic wrench

Abstract

This invention discloses an automatic spindle tightening device based on a hydraulic wrench, belonging to the technical field of tightening equipment. It mainly includes a storage unit, a transfer mechanism, a worktable, and an execution mechanism. The storage unit includes two storage components. The worktable has a transfer channel. The execution mechanism includes a mounting frame, a hydraulic wrench, and an adapter. The adapter is located on the side of the hydraulic wrench away from the input port. The adapter is slidably mounted on the mounting frame via a guide seat. While sliding linearly along the axial direction on the guide seat, the adapter also rotates circumferentially. The adapter has a mating hole, and a pin is provided on the end of the spindle near the external thread. The transfer mechanism includes a power slide, a pushing structure, and a pushing end. This automatic spindle tightening device based on a hydraulic wrench can replace manual labor in the pre-installation of locking nuts and the tightening of locking nuts, effectively reducing manual labor intensity.

Description

Technical Field

[0001] This invention relates to the field of fastening equipment technology, and more specifically to an automatic spindle fastening device based on a hydraulic wrench. Background Technology

[0002] Hydraulic wrenches can output large torque, therefore, they are widely used in the tightening and loosening of bolts and nuts on large equipment. Existing hydraulic wrenches mainly consist of a power component and a working component. The power component includes a cylinder connected to a hydraulic pump and a piston rod that is telescopically mounted within the cylinder. The working component includes a body, a ratchet, and a socket. The ratchet rotates in conjunction with the body to drive the socket to rotate. The front end of the piston rod of the power component connects to the ratchet of the working component. When tightening bolts or nuts, the socket is placed on the nut, the hydraulic pump is started, and the piston rod moves back and forth along its axis under pressure, thereby driving the ratchet to rotate, causing the socket to rotate at an angle. This provides further tightening to the nut or bolt. Repeating this action ultimately achieves the tightening of the bolt or nut.

[0003] refer to Figure 1 As shown, in the manufacturing process of the electric spindle, the locking nut 200 needs to be threaded with the external thread 101 on the spindle core 100 with a set torque, so that the locking nut 200 and the spindle core 100 are fastened together, so as to axially position the parts stacked on the spindle core 100 on the spindle core 100.

[0004] However, in the existing technology, it is usually necessary to manually align the locking nut 200 and screw it into the external thread 101 of the shaft core 100 before the locking nut 200 can be further tightened by putting the sleeve of the hydraulic wrench on the locking nut 200. The operation is cumbersome and the manual labor intensity is high.

[0005] Therefore, it is necessary to provide a new type of automatic spindle tightening device based on a hydraulic wrench. Summary of the Invention

[0006] In view of the above-mentioned problems existing in the prior art, the purpose of this invention is to provide an automatic spindle tightening device based on a hydraulic wrench, which can replace manual labor to pre-install and tighten the locking nut, effectively reducing the intensity of manual labor.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: An automatic spindle fastening device based on a hydraulic wrench is provided, comprising a storage unit, a transfer mechanism, a worktable, and an execution mechanism. The storage unit includes a storage component one and a storage component two arranged vertically in a vertical sequence. The storage component one has a storage cavity one inside, in which the spindle is housed. The storage component two has a storage cavity two inside, in which a locking nut is placed. The worktable has a transfer channel. The execution mechanism includes a mounting bracket, a hydraulic wrench, and an adapter mounted on the worktable. The adapter is located on the side of the hydraulic wrench away from the input port. The adapter is slidably mounted on the mounting bracket via a guide seat. While sliding linearly along the axial direction on the guide seat, the adapter also rotates circumferentially. A mating hole is provided at the end of the adapter near the input port, and a pin is provided on the end of the spindle near the external thread, which can be inserted into the mating hole, thereby circumferentially locking the pin and the mating hole. The transfer mechanism includes a power slide, a pushing structure, and a pushing end. The pushing end and the transfer mechanism are connected in series. The input ports of the transfer channel are aligned, and the power slide can move vertically. The pushing structure drives the pushing end to make linear telescopic movements. When the power slide moves upward to pull the storage unit to the first position, that is, the locking nut in the storage cavity two is aligned with the transfer channel, the pushing structure then drives the pushing end to extend, thereby pushing the locking nut in the storage cavity two out of the storage cavity two and into the transfer channel until the locking nut is inserted into the ratchet on the hydraulic wrench. When the power slide moves upward to pull the storage unit to the second position, that is, the shaft in the storage cavity one is aligned with the transfer channel, the pushing structure then drives the pushing end to extend, thereby pushing the shaft in the storage cavity one out of the storage cavity one and into the transfer channel. As the shaft enters the transfer channel and pushes against the adapter to slide linearly along the axial direction, the adapter rotates circumferentially, so that when the pin is aligned with the mating hole, the pin engages and inserts into the mating hole. At the same time, the external thread of the shaft abuts against the locking nut. Then, when the hydraulic wrench drives the ratchet to rotate with a set torque, it drives the locking nut to rotate relative to the shaft until the locking nut is screwed in and locked onto the shaft.

[0008] Furthermore, the pushing structure includes a body and an output rod mounted on the body that can be driven by the body to extend and retract axially. The body is mounted on a frame, and the pushing end is mounted on the end of the output rod near the worktable.

[0009] Furthermore, the pushing end also includes a piston rod, a cover plate, an elastic element two, and a plug. The piston rod is slidably disposed along the axial direction of the output rod at one end of the output rod near the worktable. The plug is installed at the front end of the piston rod. The cover plate is disposed on the side of the plug near the piston rod. The elastic element two is disposed between the piston rod and the output rod. The elastic element two always applies a spring force to the piston rod to drive the piston rod away from the output rod.

[0010] Furthermore, the pushing end also includes an outer cylinder and a flexible sleeve. The outer cylinder is mounted on the piston rod, and one end of the outer cylinder is closed by a cover plate. The flexible sleeve, which has flexible deformation capability, is fitted onto the other end of the outer cylinder. The part inside the outer cylinder and outside the piston rod forms an air chamber isolated from the external environment. Fluid can be injected into the air chamber to adjust the air pressure.

[0011] Furthermore, the hydraulic wrench includes a body, a ratchet, a sleeve, and a magnetic chuck. The body is mounted on a mounting bracket, the ratchet is rotatably engaged with the body, and the ratchet can be driven to rotate by the body. The sleeve is detachably mounted inside the ratchet, and the inner cavity shape of the sleeve is adapted to the shape of the locking nut. The magnetic chuck is mounted on the sleeve and close to the back of the sleeve.

[0012] Furthermore, the outer peripheral wall of the locking nut has a circular structure, and a push groove extending along the axial direction of the locking nut is recessed on the outer peripheral wall of the locking nut. The inner side wall of the sleeve is provided with a limiting protrusion extending along the axial direction. When the limiting protrusion of the sleeve is aligned with the push groove of the locking nut, the locking nut can be inserted into the sleeve, and at the same time the limiting protrusion is inserted into the push groove.

[0013] Furthermore, the end of the shaft away from the external thread is provided with a central hole II, and the shape of the plug is adapted to the shape of the central hole II.

[0014] Furthermore, a mounting base is slidably provided in the second storage cavity along the axial direction. The front end of the mounting base is adapted to place a locking nut, and the rear end of the mounting base is provided with a socket. The shape of the socket is also adapted to the shape of the plug.

[0015] Furthermore, the adapter has a cylindrical structure, and a torsion groove extending spirally around the central axis of the adapter is provided on the outer peripheral wall of the adapter. The guide seat has a guide cavity inside, and the adapter slides into the guide cavity. A sliding pin is provided on the periphery of the guide seat, and the sliding pin is inserted into the torsion groove. An elastic element three is provided at the rear end of the adapter, and the elastic element three always applies a thrust toward the hydraulic wrench to the adapter.

[0016] Furthermore, the mounting base includes a sliding base, a sliding latch, and an elastic element. The outer peripheral wall of the sliding base slides in conjunction with the peripheral side wall of the storage cavity. The front end of the sliding base is provided with a sliding latch that can be extended and slidably. The elastic element is disposed between the sliding latch and the sliding base. The elastic element applies a spring force to drive the sliding latch to extend out of the front end of the sliding base. The front end of the sliding base is provided with a shoulder. The insertion hole is located at the rear end of the sliding base. When the locking nut is placed at the front end of the sliding base, the end face of the locking nut near the shoulder abuts against the shoulder, and at the same time, the sliding latch is inserted into the push groove on the locking nut.

[0017] The beneficial effects of this invention are as follows: The automatic spindle tightening device based on a hydraulic wrench provided by this invention includes a storage unit, a transfer mechanism, a worktable, and an execution mechanism. The storage unit includes a storage component one and a storage component two arranged vertically. The storage component one has a storage cavity one suitable for receiving the spindle core, which is received in the storage cavity one. The storage component two has a storage cavity two for receiving the locking nut, which is placed in the storage cavity two. The worktable has a transfer channel. The execution mechanism includes a mounting bracket installed on the worktable, a hydraulic wrench, and an adapter. The adapter is located on the hydraulic wrench... With the hand away from the input port, the adapter is slidably mounted on the mounting bracket via a guide seat. While sliding linearly along the guide seat axially, the adapter also rotates circumferentially. The end of the adapter near the input port has a mating hole, and the end of the shaft near the external thread has a pin. When the pin is inserted into the mating hole, it is circumferentially engaged with the hole. The transfer mechanism includes a power slide, a pushing structure, and a pushing end. The pushing end is positioned opposite the input port of the transfer channel. The power slide is close to the input port of the transfer channel and can move vertically. The pushing structure drives the pushing end to extend and retract linearly. When the power slide moves the storage unit to the first position, i.e., the locking nut in storage cavity two is aligned with the transfer channel, the push structure drives the push end to extend, thus pushing the locking nut out of storage cavity two and into the transfer channel until the locking nut is inserted into the ratchet on the hydraulic wrench. When the power slide moves the storage unit to the second position, i.e., the shaft in storage cavity one is aligned with the transfer channel, the push structure drives the push end to extend, thus pushing the shaft in storage cavity one out of storage cavity one and into the transfer channel. The shaft enters the transfer channel and pushes against the transfer mechanism. While the head slides linearly along the axial direction, the adapter rotates circumferentially, so that when the pin is aligned with the mating hole, the pin engages and inserts into the mating hole to achieve circumferential locking between the pin and the mating hole. At the same time, the external thread of the shaft core abuts against the locking nut. Subsequently, when the hydraulic wrench drives the ratchet to rotate with a set torque, it drives the locking nut to rotate relative to the shaft core until the locking nut is screwed in and locked onto the shaft core. Thus, the automatic spindle tightening device based on the hydraulic wrench provided in this embodiment of the invention can simultaneously pre-screw the locking nut onto the shaft core and tighten the locking nut, effectively reducing labor costs and alleviating the intensity of manual labor. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 These are schematic diagrams showing the shaft core and lock nut before and after assembly.

[0020] Figure 2This is a three-dimensional structural diagram of the automatic spindle tightening device based on a hydraulic wrench provided in an embodiment of the present invention, and also shows one working state of the automatic spindle tightening device based on a hydraulic wrench.

[0021] Figure 3 This is a schematic diagram showing the positional relationship between the storage unit, the shaft, and the locking nut provided in an embodiment of the present invention.

[0022] Figure 4 for Figure 3 The front view of the structure shown.

[0023] Figure 5 For along Figure 4 A cross-sectional view along the EE direction.

[0024] Figure 6 This is a front view of the mounting base provided in an embodiment of the present invention.

[0025] Figure 7 For along Figure 6 A cross-sectional view along the FF direction.

[0026] Figure 8 An exploded view of the transfer mechanism provided in an embodiment of the present invention.

[0027] Figure 9 A cross-sectional view of the push terminal provided in an embodiment of the present invention.

[0028] Figure 10 This is a three-dimensional structural diagram of the actuator provided in an embodiment of the present invention.

[0029] Figure 11 A front view of the actuator provided in an embodiment of the present invention.

[0030] Figure 12 For along Figure 11 A cross-sectional view along the HH direction.

[0031] Figure 13 This is a three-dimensional structural diagram of a hydraulic wrench provided in an embodiment of the present invention.

[0032] Figure 14 An exploded view of a hydraulic wrench provided in an embodiment of the present invention.

[0033] Figure 15 This is a three-dimensional structural diagram of the adapter provided in an embodiment of the present invention.

[0034] Figure 16 for Figure 15 The adapter shown is an exploded view.

[0035] Figure 17This is a cross-sectional view of the automatic spindle tightening device based on a hydraulic wrench provided in an embodiment of the present invention, and also shows another working state of the automatic spindle tightening device based on a hydraulic wrench.

[0036] Figure 18 for Figure 17 An enlarged schematic diagram of region A in the middle.

[0037] Figure 19 This is a cross-sectional view of the automatic spindle tightening device based on a hydraulic wrench provided in an embodiment of the present invention, and also shows another working state of the automatic spindle tightening device based on a hydraulic wrench.

[0038] Figure 20 for Figure 19 Enlarged schematic diagram of region B in the middle.

[0039] The reference numerals in the figures are as follows: 100, shaft core; 101, external thread; 102, center hole one; 200, locking nut; 201, push groove; 300, pin; 10, storage unit; 2, storage component one; 21, storage cavity one; 3, storage component two; 31, storage cavity two; 32, mounting base; 321, sliding base; 322, sliding latch protrusion; 323, elastic component one; 324, shoulder; 325, insertion hole; 4, transfer mechanism; 41, frame; 42, power slide; 421, hook slot; 43, pushing structure; 431, machine body; 432, output rod; 44, pushing end; 441, piston rod; 442. Outer cylinder; 443. Air chamber; 444. Flexible sleeve; 445. Cover plate; 446. Elastic element two; 447. Plug; 5. Worktable; 51. Transfer channel; 511. Input port; 512. Output port; 6. Actuator; 61. Mounting bracket; 62. Hydraulic wrench; 621. Machine body; 622. Ratchet; 623. Sleeve; 624. Limiting latch protrusion; 625. Magnetic suction element; 63. Adapter; 631. Mating hole; 632. Torsion groove; 633. Guide seat; 634. Guide hole cavity; 635. Sliding pin; 636. Elastic element three; 64. Driver; 641. Output end; 7. Hook. Detailed Implementation

[0040] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0041] It should be noted that when a component is referred to as "connected to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0042] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0043] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0044] Throughout this specification, reference to "an embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of this application. Therefore, the phrases "in one embodiment," "in some embodiments," or "in some of these embodiments" appear in various places throughout the specification, and not all refer to the same embodiment. Furthermore, in one or more embodiments, a particular feature, structure, or characteristic may be combined in any suitable manner.

[0045] Please refer to Figures 1 to 20As shown, the present invention provides an automatic spindle tightening device based on a hydraulic wrench. This device includes a storage unit 10, a transfer mechanism 4, a worktable 5, and an execution mechanism 6. The storage unit 10 includes a storage component 2 and a storage component 3 arranged vertically in a vertical order. The storage component 2 has a storage cavity 21 suitable for accommodating a spindle core 100, which is housed within the storage cavity 21. The storage component 3 has a storage cavity 31 for accommodating a locking nut 200, which is placed within the storage cavity 31. The worktable 5 has a transfer channel 51. The execution mechanism 6 includes a mounting bracket 61 mounted on the worktable 5, a hydraulic wrench 62, and an adapter 63. The adapter 63 is located on the side of the hydraulic wrench 62 away from the input port 511. The adapter 63 is slidably mounted on the mounting bracket 61 via a guide seat 633. While the adapter 63 slides linearly along the axial direction on the guide seat 633, it also moves relative to the guide seat 63. 3. The adapter 63 has a mating hole 631 at one end near the input port 511. The shaft core 100 has a pin 300 at one end near the external thread 101. When the pin 300 is inserted into the mating hole 631, the pin 300 and the mating hole 631 are circumferentially locked. The transfer mechanism 4 includes a power slide 42, a pushing structure 43, and a pushing end 44. The pushing end 44 is positioned opposite to the input port 511 of the transfer channel 51. The power slide 42 can move in the vertical direction. The power slide 42 is close to the rotating shaft core 511. The input port 511 of the transfer channel 51, the push structure 43 is used to drive the push end 44 to make linear telescopic movement. When the traction storage unit 10 is moved to the first position on the power slide 42, that is, the locking nut 200 in the storage cavity 2 31 is aligned with the transfer channel 51, then the push structure 43 drives the push end 44 to extend so that the locking nut 200 in the storage cavity 2 31 is pushed out of the storage cavity 2 31 and enters the transfer channel 51 until the locking nut 200 is inserted into the ratchet 622 on the hydraulic wrench 62;When the power slide 42 moves the storage unit 10 to the second position, that is, when the shaft core 100 in the storage cavity 21 is aligned with the transfer channel 51, the push structure 43 drives the push end 44 to extend, which can push the shaft core 100 out of the storage cavity 21 and into the transfer channel 51. As the shaft core 100 enters the transfer channel 51 and pushes against the adapter 63 to slide linearly along the axial direction, the adapter 63 rotates circumferentially, so that when the pin 300 is aligned with the mating hole 631, the pin 300 engages and inserts into the mating hole 631 to realize the pin 300 The circumferential locking between the 00 and the mating hole 631, and the external thread 101 of the shaft core 100 abuts against the locking nut 200, then when the hydraulic wrench 62 drives the ratchet 622 to rotate with a set torque, the locking nut 200 rotates relative to the shaft core 100 until the locking nut 200 is screwed in and locked onto the shaft core 100. Thus, the automatic spindle tightening device based on the hydraulic wrench provided in this embodiment of the invention can simultaneously pre-screw the locking nut 200 onto the shaft core 100 and tighten the locking nut 200, effectively reducing the intensity of manual labor.

[0046] The automatic spindle tightening device based on a hydraulic wrench provided in this embodiment of the invention can achieve automatic tightening of the locking nut 200 without pre-screwing the locking nut onto the spindle core 100 through the above technical solution.

[0047] like Figure 3 As shown, in some embodiments, the top of the storage unit 2 is connected to a hook 7, such as... Figure 4 As shown, the power slide 42 is provided with a hook slot 421. The shape of the hook slot 421 is adapted to the shape of the hook 7. When the hook 7 is inserted into the hook slot 421 of the power slide 42, the power slide 42 moves in the vertical direction, which can pull the storage unit 10 to move in the vertical direction with the power slide 42.

[0048] like Figure 8 As shown, in some embodiments, the transfer mechanism 4 further includes a frame 41, and a power slide 42 is slidably mounted on the frame 41 in the vertical direction. The power slide 42 can slide in the vertical direction using, but is not limited to, a transmission structure such as a helical pair structure or a gear and rack structure.

[0049] like Figure 7 and Figure 8 As shown, in some embodiments, the pushing structure 43 includes a body 431 and an output rod 432 mounted on the body 431 and capable of being driven by the body 431 to move axially. The body 431 is mounted on the frame 41, and the pushing end 44 is mounted on the end of the output rod 432 near the worktable 5. It is understood that the pushing structure 43 may be, but is not limited to, an electric push rod, a pneumatic push rod structure, or other structures that enable the output rod 432 to move axially relative to the body 431.

[0050] like Figure 8 As shown, in some embodiments, the pushing end 44 further includes a piston rod 441, a cover plate 445, an elastic element 446, and a plug 447. The piston rod 441 is slidably disposed along the axial direction of the output rod 432 at one end of the output rod 432 near the worktable 5. The plug 447 is installed at the front end of the piston rod 441. The cover plate 445 is disposed on the side of the plug 447 near the piston rod 441. The elastic element 446 is disposed between the piston rod 441 and the output rod 432. The elastic element 446 always applies a spring force to the piston rod 441 to drive the piston rod 441 away from the output rod 432. Figure 17 and Figure 18 As shown, on the one hand, when the push end 44 pushes the locking nut 200 against the outer end face of the ratchet 622, if the locking nut 200 and the ratchet 622 are not aligned and the locking nut 200 cannot be inserted into the ratchet 622, the piston rod 441 and the plug 447 of the push end 44 will elastically retract and squeeze the elastic element 446 until the ratchet 622 rotates until the locking nut 200 and the ratchet 622 are aligned. Then, the plug 447 can elastically extend under the push of the elastic restoring force of the elastic element 446 and push the locking nut 200 into the ratchet 622. On the other hand, as Figure 19 and Figure 20 As shown, when the push end 44 pushes the shaft core 100 until the external thread 101 abuts against the locking nut 200 inserted into the ratchet 622, the piston rod 441 and plug 447 of the push end 44 will also elastically retract and squeeze the elastic element 446, thereby keeping the external thread 101 of the shaft core 100 and the locking nut 200 in elastic abutment at all times. During the process of the ratchet 622 rotating and driving the locking nut 200 to screw into the external thread 101 of the shaft core 100, the push end 44 will always apply elastic force to push the shaft core 100 towards the locking nut 200 and the ratchet 622, so as to avoid the locking nut 200 moving closer to the shaft core 100 and causing axial displacement and wear between the locking nut 200 and the ratchet 622.

[0051] Since the elastic modulus of elastic element 446 is unique, and since the weight of shaft 100 is much greater than the weight of locking nut 200, the elastic modulus of elastic element 446 needs to be selected such that it will not elastically deform when pushing shaft 100 to move. However, the elastic modulus of elastic element 446 is too large for locking nut 200. When pushing locking nut 200 at pushing end 44 and elastically pushing locking nut 200 against sleeve 623, the compressive force between locking nut 200 and sleeve 623 is extremely large. Figure 9As shown, in some embodiments, the push end 44 provided by this embodiment of the invention further includes an outer cylinder 442 and a flexible sleeve 444. The outer cylinder 442 covers the piston rod 441, and one end opening of the outer cylinder 442 is closed by a cover plate 445. The flexible sleeve 444, which has flexible deformation capability, is sleeved on the other end opening of the outer cylinder 442. When the outer cylinder 442 moves axially with the piston rod 441, the flexible sleeve 444 adapts to the displacement of the outer cylinder 442 relative to the output rod 432 by deformation, while maintaining the closed state of the corresponding opening of the outer cylinder 442. This makes the part inside the outer cylinder 442 and outside the piston rod 441 form an air chamber 443 isolated from the external environment. Fluid can be injected into the air chamber 443 to adjust the air pressure of the air chamber 443. Thus, when the push end 44 pushes the locking nut 200, by adjusting the air pressure of the air chamber 443 to balance with the external environment, the locking nut 200 is able to... When the sleeves 623 are in contact, they are only subjected to the elastic thrust of the second elastic element 446. However, when the pushing end 44 pushes the heavier shaft core 100, the elastic force of the second elastic element 446 cannot support the shaft core 100. By adjusting and increasing the air pressure of the air chamber 443, a pressure difference is generated between the inner and outer sides of the cover plate 445, thereby increasing the elastic thrust generated when the piston rod 441 and the plug 447 are subjected to force. Thus, when the pushing end 44 only pushes the shaft core 100 to move, the piston rod 441 cannot retract. Only when the pushing end 44 pushes the shaft core 100 against the locking nut 200 will the increased resistance cause the piston rod 441 to elastically retract. Therefore, the elastic modulus of the pushing end 44 provided in this embodiment can be flexibly adjusted by adjusting the air pressure of the air chamber 443 to cope with different weight conditions of the shaft core 100 and the locking nut 200, and to optimize the squeezing and wear of the shaft core 100 and the locking nut 200 with the equipment.

[0052] like Figure 10 , Figure 11 and Figure 12 As shown, in some embodiments, the hydraulic wrench 62 is mounted on the mounting bracket 61, which is radially slidably disposed on the worktable 5 along the transfer channel 51. When the mounting bracket 61 slides close to the transfer channel 51, it can drive the hydraulic wrench 62 to move until the ratchet 622 is aligned with the transfer channel 51, so that the locking nut 200 on the shaft 100 can be inserted into the ratchet 622. When the shaft 100 needs to move from the input port 511 to the output port 512 in the transfer channel 51, the mounting bracket 61 slides away from the transfer channel 51, causing the hydraulic wrench 62 to be misaligned with the transfer channel 51, so that the shaft 100 can pass over the actuator 6.

[0053] like Figure 12 , Figure 13 and Figure 14As shown, in some embodiments, the hydraulic wrench 62 includes a body 621, a ratchet 622, a socket 623, and a magnetic chuck 625. The body 621 is mounted on a mounting bracket 61. The ratchet 622 is rotatably engaged with the body 621 and can be driven to rotate by the body 621. The socket 623 is detachably mounted inside the ratchet 622 so that different sizes of locking nuts 200 can be adapted by changing different sockets 623. The inner shape of the sleeve 623 is adapted to the outer shape of the locking nut 200. When the sleeve 623 is axially fitted onto the locking nut 200, the sleeve 623 can circumferentially push the locking nut 200 to rotate. The magnetic attractor 625 is installed on the sleeve 623 and close to the back of the sleeve 623. When the locking nut 200 is inserted into the sleeve 623, the locking nut 200 is attracted by the magnetic attractor 625, thereby connecting the locking nut 200 to the sleeve 623; Figure 1 As shown, specifically, in this embodiment, the outer peripheral wall of the locking nut 200 has a circular structure, and a push groove 201 extending axially along the outer peripheral wall of the locking nut 200 is recessed thereon, such as... Figure 18 As shown, the inner wall of the sleeve 623 is provided with a limiting protrusion 624 extending axially. When the limiting protrusion 624 of the sleeve 623 is aligned with the push groove 201 of the locking nut 200, the locking nut 200 can be inserted into the sleeve 623. At the same time, the limiting protrusion 624 cooperates to insert into the push groove 201. Thus, when the ratchet 622 drives the sleeve 623 to rotate, a circumferential thrust is generated between the limiting protrusion 624 and the push groove 201, thereby driving the locking nut 200 to rotate with the ratchet 622. It can be understood that in some other embodiments not shown in the figure, the locking nut 200 and the sleeve 623 can also achieve circumferential pushing through a hexagonal shape or other non-rotational structure. It can be understood that the specific structure of the ratchet 622 being driven to rotate by the body 621 is existing mature technology and will not be described in detail here.

[0054] In some embodiments, when the locking nut 200 is inserted into the sleeve 623, the locking nut 200 and the sleeve 623 can be axially restrained to prevent the locking nut 200 from axially dislodging from the sleeve 623. Specifically, a limiting step (not shown) is provided on the inner side wall of the sleeve 623. When the locking nut 200 is inserted into the sleeve 623, the outer end face of the locking nut 200 abuts against the limiting step of the sleeve 623, thereby axially restraining the locking nut 200 on the sleeve 623.

[0055] like Figure 5 , Figure 9As shown, in some embodiments, the end of the shaft core 100 away from the external thread 101 is provided with a central hole 103, and the shape of the plug 447 is adapted to the shape of the central hole 103, so that when the plug 447 is inserted into the central hole 103 on the shaft core 100, the radial wobble of the shaft core 100 can be reduced, thereby avoiding the shaft core 100 from being pushed from the storage cavity 21 to the transfer channel 51 and causing accidental collision due to misalignment.

[0056] like Figure 5 As shown, in some embodiments, a central hole 102 is provided on the end of the shaft core 100 near the external thread 101, that is, the end of the shaft core 100 opposite to the central hole 103. The pin 300 is adapted to be inserted into the central hole 102, so that the pin 300 and the central hole 102 are circumferentially abutted and limited. Specifically, in this embodiment, the cross-section of the pin 300 is hexagonal, and the edges of the pin 300 fit against the peripheral sidewall of the central hole 102. At the same time, the shaft core 100 is located at the central hole 102. An eccentric hole (not marked in the figure) is provided on the outer end face of the pin 300. A pin (not shown in the figure) is fixedly connected to the pin 300 and the pin is inserted into the eccentric hole of the shaft core 100, so that the pin 300 and the center hole 102 achieve circumferential abutment and limitation. In addition, the cross-section of the mating hole 631 is also a hexagonal structure that matches the pin 300. When the mating hole 631 and the pin 300 are angularly aligned, the pin 300 is inserted into the mating hole 631 and a circumferential abutment and limitation is formed between the pin 300 and the mating hole 631.

[0057] like Figure 5 and Figure 7 As shown, in some embodiments, a mounting base 32 is slidably provided in the storage cavity 31 along the axial direction. The front end of the mounting base 32 is adapted to place the locking nut 200, and the rear end of the mounting base 32 is provided with a socket 325. The shape of the socket 325 is also adapted to the shape of the plug 447, so that when the plug 447 is inserted into the socket 325 on the mounting base 32, radial shaking of the mounting base 32 can be avoided.

[0058] like Figure 6 and Figure 7As shown, the mounting base 32 includes a sliding base 321, a sliding latch 322, and an elastic element 323. The outer peripheral wall of the sliding base 321 slides in conjunction with the peripheral side wall of the storage cavity 31. The sliding latch 322 is slidably provided at the front end of the sliding base 321. The elastic element 323 is disposed between the sliding latch 322 and the sliding base 321. The elastic element 323 applies elastic force to drive the sliding latch 322 to extend out of the front end of the sliding base 321. The front end of the sliding base 321 is provided with a shoulder 324. The insertion hole 325 is located at the rear end of the sliding base 321. When the locking nut 200 is placed at the front end of the sliding base 321, the end face of the locking nut 200 near the shoulder 324 abuts against the shoulder 324. At the same time, the sliding latch 322 inserts into the push groove 201 on the locking nut 200, so that the locking nut 200 is placed in the mounting base. On seat 32, when push end 44 pushes seat 32 to move locking nut 200 closer to ratchet 622 and sleeve 623, and when push groove 201 on locking nut 200 is not aligned with limit protrusion 624 on sleeve 623, plug 447 squeezes elastic element 2 446 and retracts. Then ratchet 622 rotates until push groove 201 on locking nut 200 is aligned with limit protrusion 624 on sleeve 623. Elastic element 2 446 pushes plug 447 to extend locking nut 200 until locking nut 200 is inserted into sleeve 623. Limit protrusion 624 cooperates to insert into push groove 201 and pushes sliding protrusion 322 to retract. Under the attraction of magnetic element 625, locking nut 200 and sleeve 623 are kept connected, realizing the alignment and insertion of locking nut 200 and sleeve 623.

[0059] like Figure 2 As shown, in some embodiments, the storage cavity 21 of storage component 2 is a circular hole structure adapted to the shaft core 100, so that when the shaft core 100 is inserted axially and housed in the storage cavity 21, the storage cavity 21 can be adapted to the shaft core 100. The storage cavity 31 of storage component 3 is a circular hole structure to accommodate the axial sliding of the mounting base 32.

[0060] like Figure 15 , Figure 16As shown, in some embodiments, in order to achieve linear sliding of the adapter 63 along the axial direction on the guide seat 633 while the adapter 63 rotates circumferentially relative to the guide seat 633, the adapter 63 has a cylindrical structure. A torsion groove 632 extending spirally around the central axis of the adapter 63 is provided on the outer peripheral wall of the adapter 63. A guide cavity 634 is provided inside the guide seat 633, and the adapter 63 slides into the guide cavity 634. A sliding pin 635 is provided on the periphery of the guide seat 633, and the sliding pin 635 is inserted into the torsion groove 632, allowing the sliding pin 635 to slide along the torsion groove 632. An elastic element 636 is provided at the rear end of the adapter 63. The elastic element 636 always applies a pushing force towards the hydraulic wrench 62 to the adapter 63. Thus, when the adapter 63 is not subjected to external force, the elastic element 636 pushes... The adapter 63 extends closer to the hydraulic wrench 62. The actuator 6 also includes a driver 64 for outputting linear motion power. The output end 641 of the driver 64 is connected to the adapter 63. Thus, through the above design, in the initial state, the driver 64 switches to an unloaded state, and the elastic element 636 pushes the adapter 63 to extend closer to the hydraulic wrench 62. When the pushing end 44 pushes the shaft 100 into the transfer channel 51 and pushes the adapter 63 to slide linearly along the axial direction, the adapter 63 rotates circumferentially under the helical guidance generated by the cooperation of the torsion groove 632 and the sliding pin 635. This causes the adapter 63 to rotate until the pin 300 aligns with the mating hole 631 while being axially pushed by the shaft 100, so that the pin 300 is inserted into the mating hole 631 to achieve circumferential locking between the pin 300 and the mating hole 631. Figure 20 As shown, it can be understood that when the shaft 100 is pushed to the position where the external thread 101 abuts against the locking nut 200, the shaft 100 is blocked and cannot move forward. At this time, the plug 447 retracts a certain distance and the output rod 432 stops moving. The driver 64 works to drive the output end 641 to retract, thereby pulling the adapter 63 and maintaining it in the state of retracting and squeezing the elastic element 636. When the locking nut 200 is tightened, the driver 64 can assist in pushing the locking nut 200 on the shaft 100 away from the sleeve 623 of the hydraulic wrench 62 by driving the extension of the output end 641, so as to avoid the contact resistance between the shaft 100 and the transfer channel 51 from blocking the shaft 100 from retracting with the push end 44.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic spindle tightening device based on a hydraulic wrench, characterized in that: The system includes a storage unit, a transfer mechanism, a worktable, and an execution mechanism. The storage unit comprises a storage component one and a storage component two arranged vertically in a vertical sequence. Storage component one has a storage cavity one inside, in which a shaft core is housed. Storage component two has a storage cavity two inside, in which a locking nut is placed. The worktable has a transfer channel. The execution mechanism includes a mounting bracket, a hydraulic wrench, and an adapter mounted on the worktable. The adapter is located on the side of the hydraulic wrench away from the input port and is slidably mounted on the mounting bracket via a guide seat. Furthermore, while the adapter slides linearly along the axial direction on the guide seat, it also rotates circumferentially relative to the guide seat. The adapter has a mating hole at the end near the input port, and a pin on the shaft near the external thread that can be inserted into the mating hole, thus circumferentially locking the pin to the mating hole. The transfer mechanism includes a power slide, a pushing structure, and a pushing end. The power slide can move vertically, and the pushing end is positioned opposite the input port of the transfer channel. The pushing structure drives the pushing end to perform linear telescopic motion, pulling the storage unit to move as the power slide moves upward. When the device reaches the first position, that is, the locking nut in storage cavity two is aligned with the transfer channel. Then, the push mechanism extends its push end to push the locking nut out of storage cavity two and into the transfer channel, until the locking nut is inserted into the ratchet on the hydraulic wrench. When the power slide moves the storage unit to the second position, that is, the shaft in storage cavity one is aligned with the transfer channel, the push mechanism extends its push end to push the shaft out of storage cavity one and into the transfer channel. As the shaft enters the transfer channel and pushes against the adapter, it slides linearly along the axial direction, simultaneously transferring... The head rotates circumferentially, causing the pin to engage and insert into the mating hole when aligned with it. Simultaneously, the external thread of the shaft abuts against the locking nut. Subsequently, when the hydraulic wrench drives the ratchet to rotate with a set torque, it causes the locking nut to rotate relative to the shaft until the locking nut is screwed in and locked onto the shaft. The transfer mechanism also includes a frame, and a power slide is slidably mounted on the frame in the vertical direction. The pushing structure includes a body and an output rod mounted on the body that can be driven by the body to move axially. The body is mounted on the frame, and the pushing end is mounted on the end of the output rod near the worktable.

2. The automatic spindle tightening device based on a hydraulic wrench according to claim 1, characterized in that: The pushing end also includes a piston rod, a cover plate, an elastic element two, and a plug. The piston rod is slidably disposed along the axial direction of the output rod at one end of the output rod near the worktable. The plug is installed at the front end of the piston rod. The cover plate is disposed on the side of the plug near the piston rod. The elastic element two is disposed between the piston rod and the output rod. The elastic element two always applies a spring force to the piston rod to drive the piston rod away from the output rod.

3. The automatic spindle tightening device based on a hydraulic wrench according to claim 2, characterized in that: The pushing end also includes an outer cylinder and a flexible sleeve. The outer cylinder is mounted on the piston rod, and one end of the outer cylinder is closed by a cover plate. The flexible sleeve, which has flexible deformation capability, is fitted onto the other end of the outer cylinder. The part inside the outer cylinder and outside the piston rod forms an air chamber isolated from the external environment. Fluid can be injected into the air chamber to adjust the air pressure.

4. The automatic spindle tightening device based on a hydraulic wrench according to claim 2, characterized in that: The hydraulic wrench includes a body, a ratchet, a sleeve, and a magnetic chuck. The body is mounted on a mounting bracket, the ratchet is rotatably fitted onto the body, and the ratchet can be driven to rotate by the body. The sleeve is detachably mounted inside the ratchet, and the inner cavity shape of the sleeve is adapted to the shape of the locking nut. The magnetic chuck is mounted on the sleeve and close to the back of the sleeve.

5. The automatic spindle tightening device based on a hydraulic wrench according to claim 4, characterized in that: The outer peripheral wall of the locking nut is circular, and a push groove extending along the axial direction of the locking nut is recessed on the outer peripheral wall of the locking nut. The inner side wall of the sleeve is provided with a limiting protrusion extending along the axial direction. When the limiting protrusion of the sleeve is aligned with the push groove of the locking nut, the locking nut can be inserted into the sleeve, and the limiting protrusion is inserted into the push groove at the same time.

6. The automatic spindle tightening device based on a hydraulic wrench according to claim 5, characterized in that: The end of the shaft away from the external thread is provided with a central hole two, and the shape of the plug is adapted to the shape of the central hole two.

7. The automatic spindle tightening device based on a hydraulic wrench according to claim 6, characterized in that: The storage cavity 2 is provided with a mounting base that can be slidably arranged along the axial direction. The front end of the mounting base is suitable for placing a locking nut, and the rear end of the mounting base is provided with a socket. The shape of the socket is also adapted to the shape of the plug.

8. The automatic spindle tightening device based on a hydraulic wrench according to claim 1, characterized in that: The adapter has a cylindrical structure. The outer peripheral wall of the adapter is provided with a torsion groove that extends spirally around the central axis of the adapter. The guide seat has a guide cavity inside. The adapter slides into the guide cavity. The guide seat has a sliding pin on its periphery. The sliding pin is inserted into the torsion groove. An elastic element three is provided at the rear end of the adapter. The elastic element three always applies a thrust toward the hydraulic wrench to the adapter.

9. The automatic spindle tightening device based on a hydraulic wrench according to claim 7, characterized in that: The mounting base includes a sliding base, a sliding latch, and an elastic element. The outer peripheral wall of the sliding base slides against the peripheral side wall of the storage cavity. The sliding latch is slidably provided at the front end of the sliding base. The elastic element is located between the sliding latch and the sliding base. The elastic element applies a spring force to drive the sliding latch to extend out of the front end of the sliding base. The front end of the sliding base has a shoulder. The insertion hole is located at the rear end of the sliding base. When the locking nut is placed at the front end of the sliding base, the end face of the locking nut near the shoulder abuts against the shoulder, and at the same time, the sliding latch is inserted into the push groove on the locking nut.

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