A tangential locking manual quick-change connector and use method

Abstract

The present invention relates to a tangential locking manual quick-change connector and a method of use, the connector comprising a quick-change male end and a quick-change female end adapted to the quick-change male end, the quick-change male end comprising a male end body, the outer surface of the male end body being in the shape of a stepped shaft, and an inner hole being opened in the axial direction; one end of the male end body is a connecting end for connecting to an end picker, and the other end is a plug-in end connected and locked to the quick-change female end, and the front end has a chamfer; the quick-change female end comprises a female end body, the plug-in end of the male end body is matched and connected with the female end jack; the elastic locking pin assembly is installed in the elastic locking pin mounting hole of the female end body, and the self-centering tangential locking assembly is installed in the self-centering tangential locking assembly mounting hole of the female end body. The present invention has a simple structure, reliable connection, convenient operation, and low cost.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile manufacturing, and in particular relates to a tangential locking manual quick-change connector and a use method thereof. Background Art

[0002] With the continuous development of automation technology, it has become an inevitable trend for automobile stamping production lines to move towards automated production. In order to meet the efficiency of automated production, it is necessary to install a quick connector on the robot or mechanical arm, which is used to connect the picking components (such as pneumatic clamps, vacuum suction cups, magnetic suction cups, etc.) on the robot or mechanical arm of the stamping automated production line to pick up the sheets, so as to realize the rapid installation and disassembly of automated equipment and picking components (such as pneumatic clamps, vacuum suction cups, magnetic suction cups, etc.). However, the quick connectors currently used in domestic stamping multi-station automated production lines are mainly from foreign brands such as BILSON, NOGREN, and DESTACO. Due to their complex structures, the product prices and subsequent maintenance costs are relatively high, and the failure rate is also high; other connector products on the market currently have high costs, high subsequent maintenance costs, large product sizes, and complex operations. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a tangential locking manual quick-change connector and a method of use, which has the characteristics of simple structure, reliable connection, convenient operation and low cost.

[0004] A tangential locking manual quick-change connector, comprising a quick-change male end and a quick-change female end adapted to the quick-change male end, the quick-change male end comprising a male end body, the outer surface of the male end body is in the shape of a stepped shaft, and an inner hole is opened in the axial direction; one end of the male end body is a connecting end for connecting to an end picker, and the other end is a plug-in end connected and locked with the quick-change female end, and the front end has a chamfer; a locking hole is arranged in the middle of the plug-in end, and the locking hole is perpendicular to the axis of the male end body;

[0005] The quick-change female end includes a female end body, an elastic locking pin assembly, and a self-centering tangential locking assembly. A female end socket is provided on the female end body, and the plug post end of the male end body is matched and connected with the female end socket; an elastic locking pin mounting hole is vertically provided on the side wall of the female end body near the plug post end and at the same height as the axis of the female end socket, which is consistent with the height of the locking hole, and the elastic locking pin assembly is installed in the elastic locking pin mounting hole, and the end of the elastic locking pin assembly is retractable; a self-centering tangential locking assembly mounting hole is vertically provided on the female end body at an insertion end away from the female end socket and higher than the female end axis, and the self-centering tangential locking assembly is installed in the self-centering tangential locking assembly mounting hole to radially lock the connector; a threaded hole is provided on the female end body at the upper part of the self-centering tangential locking assembly mounting hole.

[0006] The connection end of the male end body connected to the end tool is a clamp end or a cylindrical end.

[0007] The axis of the clamp end is parallel or perpendicular to the axis of the inner hole.

[0008] A positioning pin is arranged on the shoulder plane of the male end body; a positioning pin hole is opened on the butt joint end surface where the female end body and the male end body are connected, which cooperates with the positioning pin of the quick-change male end.

[0009] The elastic locking pin assembly includes a shell, a locking pin, a knob handle, a cylindrical helical compression spring, and a cylindrical pin. The shell is provided with a stepped inner hole; the top of the shell is provided with an inclined end surface; the middle part of the shell is provided with a mounting flange; the locking pin is arranged inside the shell, and the end of the locking pin is the end of the elastic locking pin assembly; a set of cylindrical helical compression springs is arranged outside the locking pin, and is arranged between the inner end surface of the stepped inner hole of the shell and the axial shoulder of the locking pin; the knob handle is connected to the top of the locking pin through the cylindrical pin, and the knob handle is in contact with the inclined end surface of the top of the shell.

[0010] The self-centering tangential locking assembly includes a threaded hole tangential locking sleeve, a hollow tangential locking sleeve, a cylindrical helical compression spring 2, a locking bolt, an adjustable locking handle, a conical helical compression spring and a Seda screw. The threaded hole tangential locking sleeve and the hollow tangential locking sleeve are coaxially installed in the mounting hole of the self-centering tangential locking assembly. A threaded through hole is opened inside the threaded hole tangential locking sleeve, and a light hole is opened inside the hollow tangential locking sleeve coaxially with the threaded through hole; the cylindrical helical compression spring 2 is a compression spring, which is coaxially arranged between the threaded hole tangential locking sleeve and the hollow tangential locking sleeve and is in an initial state; one end of the locking bolt has an external threaded end with an external thread, and the other end is an external hexagonal end with an outer diameter greater than the thread diameter. The external thread of the locking bolt The threaded end passes through the light hole of the hollow tangential locking sleeve, and the cylindrical spiral compression spring is threadedly connected with the threaded hole tangential locking sleeve; the opposite ends of the threaded hole tangential locking sleeve and the hollow tangential locking sleeve are respectively provided with arc grooves of the same diameter as the female end main body plug hole, and the axis of the arc groove is parallel to the female end plug hole; key grooves are provided on the opposite sides of the arc grooves, and the positions correspond to the threaded holes; a cylindrical end set screw is arranged in the threaded hole provided on the upper part of the mounting hole of the self-centering tangential locking assembly of the female end main body, and the cylindrical end of the cylindrical end locking screw passes through the threaded hole, and the cylindrical end thereof slides with the key grooves of the threaded hole tangential locking sleeve and the hollow tangential locking sleeve; the adjustable locking handle is connected to the outer hexagonal end of the locking bolt through a Seda screw and a conical spiral compression spring.

[0011] A male end circuit assembly is arranged in the inner hole of the end portion of the plug end of the quick-change male end, and a male end gas circuit assembly is arranged above the shaft shoulder of the quick-change male end, and the male end circuit assembly and the male end gas circuit assembly are detachably connected to the male end body; a female end circuit assembly is arranged at the non-contact end of the female end body and the male end body, and is connected to the male end circuit assembly, and a female end gas circuit assembly is arranged above the female end body, and the female end circuit assembly and the female end gas circuit assembly are detachably connected to the female end body.

[0012] The male end circuit assembly is connected to the male end body through a positioning sleeve and a fastening screw; the male end gas circuit assembly is connected to the male end body through a positioning sleeve and a fastening screw; the female end circuit assembly is connected to the female end body through a positioning sleeve and a fastening screw, and the female end gas circuit assembly is connected to the female end body through a positioning sleeve and a fastening screw.

[0013] The method of using the above-mentioned tangential locking manual quick-change connector is as follows:

[0014] When the connection operation is performed, the quick-change male end is inserted into the quick-change female end, and the chamfer at the front end of the quick-change male end pushes open the locking pin of the elastic locking pin assembly. When the locking hole of the quick-change male end is inserted into place and is just aligned with the locking pin, the locking pin falls into the locking hole of the quick-change male end under the action of the spring force of the cylindrical helical compression spring 1 to complete the primary locking action of the connector; the adjustable locking handle is rotated, and the locking bolt is tightened through the adjustable locking handle. The locking bolt pulls the threaded hole tangential locking sleeve to move in the direction of the cylindrical helical compression spring 2 through the thread, and the locking bolt presses the hollow tangential locking sleeve to move in the direction of the cylindrical helical compression spring 2 through the shaft shoulder, compressing the cylindrical helical compression spring 2, and the threaded hole tangential locking sleeve and the circular arc groove of the hollow tangential locking sleeve clamp the quick-change male end to complete the secondary locking action of the connector;

[0015] When the loosening and separation operation is performed, the adjustable locking handle is rotated in the opposite direction. By unscrewing the adjustable locking handle out of the locking bolt, the threaded hole tangential locking sleeve and the hollow tangential locking sleeve move away from each other under the action of the cylindrical helical compression spring 2, and the clamping force on the quick-change male end is lost; then the knob handle of the elastic locking pin assembly is rotated to shrink the locking pin and disengage from the locking hole of the quick-change male end. At this time, the quick-change male end can be separated from the quick-change female end.

[0016] The beneficial effects of the present invention are as follows: the manual quick-change connector of the present invention adopts a brand-new structural design, which makes the manual quick-change connector smaller in size, and the manual locking operation method is more novel and more convenient. The connection end between the quick-change male end and the end picker can be a cylindrical end or a clamp end, which can be connected to different types of end pickers and has a wide range of applications; at the same time, the circuit and gas circuit connection forms can be expanded. The manual locking structure of the manual connector of the present invention is simple and reliable, and has great advantages in cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A structural schematic diagram of a tangential locking manual quick-change connector in connection state provided in Embodiment 1 of the present invention;

[0018] Figure 2 A schematic structural diagram of a tangential locking manual quick-change connector in a separated state provided in Example 1 of the present invention;

[0019] Figure 3 An axial cross-sectional view of the tangential locking manual quick-change connector in a connected state provided in Example 1 of the present invention;

[0020] Figure 4 It is a structural schematic diagram of the elastic locking latch assembly of the present invention;

[0021] Figure 5 for Figure 4 Axial cross-sectional view of

[0022] Figure 6 An axial cross-sectional view of the self-centering tangential locking assembly of the present invention;

[0023] Figure 7 A schematic diagram of a quick-change male end in a tangential locking manual quick-change connector provided in Example 2 of the present invention;

[0024] Figure 8 A schematic diagram of a quick-change male end in a tangential locking manual quick-change connector provided in Example 3 of the present invention;

[0025] in,

[0026] 1-Male end body, 2-Location pin, 3-Connection end, 4-Pin end, 5-Locking hole, 6-Male end circuit assembly, 7-Male end gas circuit assembly, 8-Female end body, 9-Elastic locking pin assembly, 10-Self-centering tangential locking assembly, 11-Female end jack, 12-Elastic locking pin mounting hole, 13-Self-centering tangential locking assembly mounting hole, 14-Threaded hole, 15-Female end circuit assembly, 16-Female end gas circuit assembly, 17-Location pin hole, 18-Housing, 19-Locking pin, 20-Knob handle, 21-Round Cylindrical helical compression spring one, 22-cylindrical pin, 23-step inner hole, 24-oblique end face, 25-mounting flange, 26-hexagon socket screw, 27-threaded hole tangential locking sleeve, 28-hollow tangential locking sleeve, 29-cylindrical helical compression spring two, 30-locking bolt, 31-adjustable locking handle, 32-conical helical compression spring, 33-Seda screw, 34-arc groove, 35-keyway, 36-external threaded end, 37-external hexagonal end, 38-cylindrical end set screw, 39-locating sleeve, 40-fastening screw. DETAILED DESCRIPTION

[0027] In order to better explain the present invention and facilitate understanding, the technical solutions and effects of the present invention are described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0028] Example 1

[0029] like Figure 1-3 As shown, a tangential locking manual quick-change connector includes a quick-change male end and a quick-change female end matched with the quick-change male end, the quick-change male end includes a male end body 1, the outer surface of the male end body 1 is a stepped shaft shape, and an inner hole is opened inside along the axial direction; a positioning pin 2 is arranged on the shoulder plane of the male end body 1; one end of the male end body 1 is a connecting end 3 for connecting to an end picker, and the connecting end 3 in this embodiment is a clamp end, and the axis of the clamp is parallel to the axis of the inner hole; the other end is a plug-in column end 4 connected and locked with the quick-change female end, and the front end has a chamfer; a locking hole 5 is arranged in the middle of the plug-in column end 4, and the locking hole 5 is perpendicular to the axis of the male end body 1.

[0030] A male end circuit assembly 6 is arranged in the inner hole of the end portion of the plug-in terminal 4 of the quick-change male end, and the male end circuit assembly 6 is detachably connected to the male end body 1. In the present embodiment, the male end circuit assembly 6 is connected to the male end body 1 via a positioning sleeve 39 and a fastening screw 40; a male end gas circuit assembly 7 is arranged above the shaft shoulder of the quick-change male end, and the male end gas circuit assembly 7 is detachably connected to the male end body 1. In the present embodiment, the male end gas circuit assembly 7 is connected to the male end body 1 via a positioning sleeve 39 and a fastening screw 40.

[0031] The quick-change female end includes a female end body 8, an elastic locking pin assembly 9, and a self-centering tangential locking assembly 10. A female end socket 11 is opened on the female end body 8, and the plug post end 4 of the male end body 1 is matched and connected with the female end socket 11; an elastic locking pin mounting hole 12 is vertically opened on the side wall of the female end body 8 near the plug post end 4 and at the same height as the axis of the female end socket 11, which is consistent with the height of the locking hole 5. The elastic locking pin assembly 9 is installed in the elastic locking pin mounting hole 12 to lock the connector axially. The elastic locking pin assembly 9 is installed on the female end body 8 by means of a hexagon socket screw 26, and the end of the elastic locking pin assembly 9 is retractable. The end of the elastic locking pin assembly 9 protrudes from the surface of the female end plug hole 11 in the extended state and extends into the female end plug hole 11, and is inserted into the locking hole 5, so as to realize the connection between the male end body 1 and the female end body 8, which is also the first locking of the connector; the end of the elastic locking pin assembly 9 is in the contracted state, and the end of the elastic locking pin assembly 9 is retracted and disengaged from the locking hole 5. A self-centering tangential locking assembly mounting hole 13 is vertically opened on the insertion end of the female end body 8 away from the female end plug hole 11 and higher than the female end axis. The self-centering tangential locking assembly 10 is installed in the self-centering tangential locking assembly mounting hole 13 to lock the connector radially; a threaded hole 14 is opened on the female end body 8 at the upper part of the self-centering tangential locking assembly 10 mounting hole. A positioning pin hole 17 is opened on the butt end surface where the female end body 8 is connected to the male end body 1, which cooperates with the positioning pin 2 of the quick-change male end.

[0032] The non-contact end of the female end body 8 and the male end body 1 is provided with a female end circuit assembly 15, which is connected to the male end circuit assembly 6 to realize the circuit connection between the robot or mechanical arm and the end picker; the female end circuit assembly 15 is detachably connected to the male end body 1, and in this embodiment, the female end circuit assembly 15 is connected to the female end body 8 through a positioning sleeve 39 and a fastening screw 40. A female end gas circuit assembly 16 is provided above the female end body 8, which is connected to the male end gas circuit assembly 7 to realize the gas circuit connection between the robot or mechanical arm and the end picker; the female end gas circuit assembly 16 is detachably connected to the female end body 8, and in this embodiment, the female end gas circuit assembly 16 is connected to the female end body 8 through a positioning sleeve 39 and a fastening screw 40.

[0033] like Figure 4-5As shown, the elastic locking pin assembly 9 includes a housing 18, a locking pin 19, a knob handle 20, a cylindrical helical compression spring 21, and a cylindrical pin 22. The housing 18 is provided with a stepped inner hole 23; the top of the housing 18 is provided with an inclined end face 24, and the inclined end face 24 forms an angle less than 90° with the axis; the middle part of the housing 18 is provided with a mounting flange 25, and the mounting flange 25 is provided with a mounting hole; the locking pin 19 is arranged inside the housing 18, and the end of the locking pin 19 is the end of the elastic locking pin assembly 9; the cylindrical helical compression spring 21 is sleeved on the outside of the locking pin 19, and is arranged between the inner end face of the stepped inner hole 23 of the housing 18 and the shoulder of the locking pin 19; the knob handle 20 is connected to the cylindrical pin 22 through the cylindrical pin 22 The top of the locking pin 19 is connected, and the knob handle 20 contacts the oblique end surface 24 at the top of the shell 18; when the cylindrical helical compression spring 21 is in a natural state, the knob handle 20 contacts the lowest point of the oblique end surface 24, and the locking pin 19 is in an extended state, that is, the end of the locking pin 19 extends into the locking hole 5 to lock the male end body 1 and the female end body 8; rotate the knob handle 20, the knob handle 20 rotates along the oblique end surface 24, and gradually moves upward along the oblique end surface 24 from the lowest point of the oblique end surface 24, driving the locking pin 19 to contract, and the end of the locking pin 19 is away from the locking hole 5; when the knob handle 20 is released and the knob handle 20 loses the driving force, under the action of the cylindrical helical compression spring 21, the locking pin 19 and the knob handle 20 return to the extended state.

[0034] like Figure 6As shown, the self-centering tangential locking assembly 10 includes a threaded hole tangential locking sleeve 27, a hollow tangential locking sleeve 28, a cylindrical helical compression spring 29, a locking bolt 30, an adjustable locking handle 31, a conical helical compression spring 32 and a Seda screw 33. The threaded hole tangential locking sleeve 27 and the hollow tangential locking sleeve 28 are coaxially installed in the self-centering tangential locking assembly installation hole 13. The threaded hole tangential locking sleeve 27 has a threaded through hole inside, and the inside of the hollow tangential locking sleeve 28 is connected to the threaded hole. A light hole is coaxially opened in the through hole; the cylindrical helical compression spring 29 is a compression spring, which is coaxially arranged between the threaded hole tangential locking sleeve 27 and the hollow tangential locking sleeve 28 and is in an initial state; one end of the locking bolt 30 has an external threaded end 36 with an external thread, and the other end is an external hexagonal end 37 with an outer diameter greater than the thread diameter. The external threaded end 36 of the locking bolt 30 passes through the light hole of the hollow tangential locking sleeve 28 and the cylindrical helical compression spring 29, and is threadedly connected with the threaded hole tangential locking sleeve 27. The ends opposite to the threaded hole tangential locking sleeve 27 and the hollow tangential locking sleeve 28 are respectively provided with arc grooves 34 of the same diameter as the female end body 8 insertion hole, and the axis of the arc groove 34 is parallel to the female end insertion hole 11; the opposite sides of the arc grooves 34 are provided with key grooves 35, the positions of which correspond to the threaded holes 14; a cylindrical end set screw 38 is arranged in the threaded hole 14 provided at the upper part of the mounting hole of the self-centering tangential locking assembly 10 of the female end body 8, and the cylindrical end of the cylindrical end locking screw passes through the threaded hole 14, and the cylindrical end thereof slides with the key groove 35 of the threaded hole tangential locking sleeve 27 and the hollow tangential locking sleeve 28. The adjustable locking handle 31 is connected to the outer hexagonal end 37 of the locking bolt 30 through the Seda screw 33 and the conical spiral compression spring 32. The position of the locking bolt 30 can be adjusted by rotating the adjustable locking handle 31, so that the self-centering tangential locking assembly 10 has an adjustable function.

[0035] The method of using the above-mentioned tangential locking manual quick-change connector is as follows:

[0036] During use, when the connection operation is performed, the quick-change male end is inserted into the quick-change female end, and the chamfered front end of the quick-change male end pushes open the locking pin 19 of the elastic locking pin assembly 9. When the locking hole 5 of the quick-change male end is inserted into place and is aligned with the locking pin 19, the locking pin 19 falls into the locking hole 5 of the quick-change male end under the action of the spring force of the cylindrical helical compression spring 21 to complete the primary locking action of the connector. The adjustable locking handle 31 is rotated to tighten the locking bolt 30 through the adjustable locking handle 31. The locking bolt 30 pulls the threaded hole tangential locking sleeve 27 to move in the direction of the cylindrical helical compression spring 29 through the thread. Since the outer diameter of the outer hexagonal end 37 of the locking bolt 30 is larger than the diameter of the outer threaded end 36, the locking bolt 30 has a shoulder. The locking bolt 30 presses the hollow tangential locking sleeve 28 to move in the direction of the cylindrical helical compression spring 29 through the shoulder, compressing the cylindrical helical compression spring 29, and the cylindrical helical compression spring 29 changes from an initial state to a compressed state; the arc groove 34 of the threaded hole tangential locking sleeve 27 and the hollow tangential locking sleeve 28 clamps the quick-change male end to complete the secondary locking action of the connector. When the loosening and separation operation is performed, the adjustable locking handle 31 is rotated in the opposite direction. By unscrewing the adjustable locking handle 31 out of the locking bolt 30, the threaded hole tangential locking sleeve 27 and the hollow tangential locking sleeve 28 are separated from each other under the action of the cylindrical helical compression spring 29, and the clamping force on the quick-change male end is lost; then the knob handle 20 of the elastic locking pin assembly 9 is rotated to shrink the locking pin 19 and disengage from the locking hole 5 of the quick-change male end. At this time, the quick-change male end can be separated from the quick-change female end.

[0037] Example 2

[0038] like Figure 7 As shown, the difference between this embodiment and embodiment 1 is that in this embodiment, the connecting end 3 of the male end body 1 used to connect to the end tool is a clamp end, the axis of the clamp is perpendicular to the axis of the inner hole, and the remaining structural settings and usage methods are the same as those in embodiment 1.

[0039] Example 3

[0040] like Figure 8 As shown, the difference between this embodiment and embodiment 1 is that the connection end 3 of the male end body 1 used for connecting to the end tool is a cylindrical end, and the remaining structural settings and usage methods are the same as those of embodiment 1.

Claims

1. A tangential locking manual quick-change connector, characterized in that: It comprises a quick-change male end and a quick-change female end matched with the quick-change male end, the quick-change male end comprises a male end body, the outer surface of the male end body is in the shape of a stepped shaft, and an inner hole is opened inside along the axial direction; one end of the male end body is a connecting end for connecting with an end picker, and the other end is a plug-in column end connected and locked with the quick-change female end, and the front end has a chamfer; a locking hole is arranged in the middle of the plug-in column end, and the locking hole is perpendicular to the axis of the male end body; The quick-change female end includes a female end body, an elastic locking pin assembly, and a self-centering tangential locking assembly. A female end socket is provided on the female end body, and the plug post end of the male end body is matched and connected with the female end socket; an elastic locking pin mounting hole is vertically provided on the side wall of the female end body near the plug post end and at the same height as the axis of the female end socket, which is consistent with the height of the locking hole, and the elastic locking pin assembly is installed in the elastic locking pin mounting hole, and the end of the elastic locking pin assembly is retractable; a self-centering tangential locking assembly mounting hole is vertically provided on the female end body at the insertion end away from the female end socket and higher than the female end axis, and the self-centering tangential locking assembly is installed in the self-centering tangential locking assembly mounting hole to radially lock the connector; a threaded hole is provided on the female end body at the upper part of the self-centering tangential locking assembly mounting hole; The connection end of the male end body connected to the end picker is a clamp end or a cylindrical end; The self-centering tangential locking assembly includes a threaded hole tangential locking sleeve, a hollow tangential locking sleeve, a cylindrical helical compression spring 2, a locking bolt, an adjustable locking handle, a conical helical compression spring and a Seda screw. The threaded hole tangential locking sleeve and the hollow tangential locking sleeve are coaxially installed in the mounting hole of the self-centering tangential locking assembly. A threaded through hole is opened inside the threaded hole tangential locking sleeve, and a light hole is opened inside the hollow tangential locking sleeve coaxially with the threaded through hole; the cylindrical helical compression spring 2 is a compression spring, which is coaxially arranged between the threaded hole tangential locking sleeve and the hollow tangential locking sleeve and is in an initial state; one end of the locking bolt has an external threaded end with an external thread, and the other end is an external hexagonal end with an outer diameter greater than the thread diameter. The external thread of the locking bolt The threaded end passes through the light hole of the hollow tangential locking sleeve, and the cylindrical spiral compression spring is threadedly connected with the threaded hole tangential locking sleeve; the opposite ends of the threaded hole tangential locking sleeve and the hollow tangential locking sleeve are respectively provided with arc grooves of the same diameter as the female end main body plug hole, and the axis of the arc groove is parallel to the female end plug hole; key grooves are provided on the opposite sides of the arc grooves, and the positions correspond to the threaded holes; a cylindrical end set screw is arranged in the threaded hole provided on the upper part of the mounting hole of the self-centering tangential locking assembly of the female end main body, and the cylindrical end of the cylindrical end locking screw passes through the threaded hole, and the cylindrical end thereof slides with the key grooves of the threaded hole tangential locking sleeve and the hollow tangential locking sleeve; the adjustable locking handle is connected to the outer hexagonal end of the locking bolt through a Seda screw and a conical spiral compression spring.

2. A tangential locking manual quick-change connector according to claim 1, characterized in that: The axis of the clamp end is parallel or perpendicular to the axis of the inner hole.

3. The tangential locking manual quick-change connector according to claim 1, characterized in that: A positioning pin is arranged on the shoulder plane of the male end body; a positioning pin hole is opened on the butt joint end surface where the female end body and the male end body are connected, which cooperates with the positioning pin of the quick-change male end.

4. The tangential locking manual quick-change connector according to claim 1, characterized in that: The elastic locking pin assembly includes a shell, a locking pin, a knob handle, a cylindrical helical compression spring, and a cylindrical pin. The shell is provided with a stepped inner hole; the top of the shell is provided with an inclined end surface; the middle part of the shell is provided with a mounting flange; the locking pin is arranged inside the shell, and the end of the locking pin is the end of the elastic locking pin assembly; a set of cylindrical helical compression springs is arranged outside the locking pin, and is arranged between the inner end surface of the stepped inner hole of the shell and the axial shoulder of the locking pin; the knob handle is connected to the top of the locking pin through the cylindrical pin, and the knob handle is in contact with the inclined end surface of the top of the shell.

5. The tangential locking manual quick-change connector according to claim 1, characterized in that: A male end circuit assembly is arranged in the inner hole of the end portion of the plug end of the quick-change male end, and a male end gas circuit assembly is arranged above the shaft shoulder of the quick-change male end, and the male end circuit assembly and the male end gas circuit assembly are detachably connected to the male end body; a female end circuit assembly is arranged at the non-contact end of the female end body and the male end body, and is connected to the male end circuit assembly, and a female end gas circuit assembly is arranged above the female end body, and the female end circuit assembly and the female end gas circuit assembly are detachably connected to the female end body.

6. A tangential locking manual quick-change connector according to claim 5, characterized in that: The male end circuit assembly is connected to the male end body through a positioning sleeve and a fastening screw; the male end gas circuit assembly is connected to the male end body through a positioning sleeve and a fastening screw; the female end circuit assembly is connected to the female end body through a positioning sleeve and a fastening screw, and the female end gas circuit assembly is connected to the female end body through a positioning sleeve and a fastening screw.

7. A method for using a tangential locking manual quick-change connector according to any one of claims 1 to 6, characterized in that: The details are as follows: When the connection operation is performed, the quick-change male end is inserted into the quick-change female end, and the chamfer at the front end of the quick-change male end pushes open the locking pin of the elastic locking pin assembly. When the locking hole of the quick-change male end is inserted into place and is just aligned with the locking pin, the locking pin falls into the locking hole of the quick-change male end under the action of the spring force of the cylindrical helical compression spring 1 to complete the primary locking action of the connector; the adjustable locking handle is rotated, and the locking bolt is tightened through the adjustable locking handle. The locking bolt pulls the threaded hole tangential locking sleeve to move in the direction of the cylindrical helical compression spring 2 through the thread, and the locking bolt presses the hollow tangential locking sleeve to move in the direction of the cylindrical helical compression spring 2 through the shaft shoulder, compressing the cylindrical helical compression spring 2, and the threaded hole tangential locking sleeve and the circular arc groove of the hollow tangential locking sleeve clamp the quick-change male end to complete the secondary locking action of the connector; When the loosening and separation operation is performed, the adjustable locking handle is rotated in the opposite direction. By unscrewing the adjustable locking handle out of the locking bolt, the threaded hole tangential locking sleeve and the hollow tangential locking sleeve move away from each other under the action of the cylindrical helical compression spring 2, and the clamping force on the quick-change male end is lost; then the knob handle of the elastic locking pin assembly is rotated to shrink the locking pin and disengage from the locking hole of the quick-change male end. At this time, the quick-change male end can be separated from the quick-change female end.

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