Auxiliary position changing device for loading and unloading and shot blasting machine

Abstract

The application discloses a kind of upper unloading auxiliary displacement device and shot blasting machine, including in the upper unloading auxiliary displacement device of shot blasting machine, comprising: upper combination, installation is in the lower end of the boom of shot blasting hanger;Brake device is located below the upper combination, the brake device has rotor and stator, and brake pad adapted to rotor and stator, the brake device further includes the driving device for driving stator to make rotor and stator clutch;Lower combination is installed on the rotor, and with upper combination in up-down direction alignment;Lifting device, the brake device is placed to drive the brake device lifting, so that lower combination is combined with upper combination. According to the upper unloading auxiliary displacement device of the application, the position of shot blasting hanger can be stably maintained, and the overall service life is relatively longer.

Description

TECHNICAL FIELD

[0001] The present application relates to a device for assisting the position change of a shot blasting hanger when a robot is loading or unloading a shot blasting machine, and a shot blasting machine equipped with the device. BACKGROUND

[0002] A hook-type shot blasting machine usually has several hook hangers, each of which (is a kind of shot blasting hanger) includes a hanger rod body (i.e. a hanger rod) having a lifting eye at the upper end, and a plurality of hook groups installed on the hanger rod body as a mounting base. The hook groups are arranged in an up-down manner, and each hook group includes a ring-shaped array of hooks, the axis of which is the axis of the hanger rod body.

[0003] When the shot blasting machine is working, the hook hanger is pulled to the loading position outside the shot blasting machine by a traction device, and then stopped. At this time, the workpiece is manually hung on the hook group of the current hook hanger. After the operation of hanging the workpiece on the hook group is completed, the hook hanger is manually rotated to align the next hook group with the loading position, and the workpiece is manually loaded again. In this way, all the hooks on the hook hanger are hung with workpieces. After the loading of the current hook hanger is completed, the hook hanger is pulled into the shot blasting machine for shot blasting, and the next hook hanger is manually loaded.

[0004] After the workpiece is shot blasted, the hook hanger is pulled out of the shot blasting machine, and the workpiece is manually removed one by one in a manner basically opposite to the loading. Since the workpiece is generally a metal workpiece, it is generally heavy, and in some cases, two people are needed to lift or an external lifting tool is needed to assist the workpiece to be hung on the hook. This not only has high labor intensity and low production efficiency, but also easily causes injury accidents. Therefore, the current hook-type shot blasting machine uses a robot for loading and unloading.

[0005] Although the current robot for loading and unloading is becoming more and more intelligent, it still cannot accurately load and unload according to the current position of the hook hanger, for example. In other words, the position accuracy of the hook hanger after the position change is relatively high when the robot is used for loading and unloading.

[0006] As mentioned above, the hook hanger is a kind of shot blasting hanger, the cooperation between the hook and the ring is unstable due to the large cooperation gap, if there is no manual support, the hook hanger is in a state of back and forth swing due to the inertia after the displacement, and it is difficult to be stable in a short time. Therefore, in some implementations, the hook hanger is replaced by a downwardly depending hanger, the included hanger is connected with the motor driving the hanger to rotate through the gear mechanism, under this condition, not only the motor is controlled to realize the displacement, but also the position locking after the displacement is realized based on the motor, for example, the brake. It should be noted that the impact will be generated during the loading and unloading, and the gear mechanism is relatively sensitive to the impact, which is easy to cause the teeth in the current meshing state to bite each other.

[0007] Typically, as Chinese patent document CN117001544A discloses a hook type shot blasting machine for castings, which includes two hanger assemblies, i.e. the aforementioned shot blasting hanger. The hanger assembly is installed on the hanger transmission mechanism, which is used for the position flow of the hanger assembly. The hanger assembly further includes a wheeled mobile seat for assembling the hanger assembly on the hanger transmission mechanism, and the hanger assembly further includes a hanger rod connected to the wheeled mobile seat through a rotating pair, the upper part of the hanger rod has a driven gear, and the lower end of the hanger rod is connected with a hanger, the hanger has eight downwardly depending rod-shaped members, and each rod-shaped member is provided with four hooks. Since the rod-shaped members are uniformly distributed around the disc-shaped member at the lower part of the hanger rod, in order to meet the position requirement of the loading and unloading of the workpiece, the hanger rod needs to be rotated by 45 degrees after each rod-shaped member is fully hung. The main purpose of using the driven gear in this patent document is to ensure that the hanger assembly can rotate in real time during shot blasting, so that different surfaces of the workpiece can be shot. Although the problem of displacement of the hanger assembly during loading and unloading is not mentioned in this patent document, with the development of technology, the problem of displacement of the hanger assembly needs to be considered. The configuration of the gear set has the problem that the teeth are easy to bite during loading and unloading, especially in this patent document, the driven gear is offset at the upper end of the hanger rod, the force arm of the force acting on the gear pair is relatively large, which is more likely to accelerate the failure of the gear. SUMMARY

[0008] The purpose of the present application is to provide an auxiliary displacement device for loading and unloading, so that the position of the shot blasting hanger is stably maintained, and the overall service life is relatively long; the present application also provides a shot blasting machine provided with the auxiliary displacement device for loading and unloading.

[0009] According to the first aspect of the embodiment of the present application, an auxiliary displacement device for loading and unloading is provided for the auxiliary displacement of the shot blasting hanger of the shot blasting machine, and the auxiliary displacement device for loading and unloading comprises:

[0010] an upper combination is installed at the lower end of the hanger rod of the shot blasting hanger;

[0011] A brake device is located below the upper coupling, the brake device has a rotor and a stator, and a brake pad adapted to the rotor and the stator, the brake device further comprises a driving device for driving the stator to make the rotor and the stator engage or disengage;

[0012] A lower coupling is installed on the rotor and is aligned with the upper coupling in the up-down direction;

[0013] A lifting device is used to place the brake device to drive the brake device to lift and make the lower coupling engage with the upper coupling.

[0014] Optionally, the upper coupling and the lower coupling are connected by spline connection or profile connection;

[0015] When the profile connection is used, one of the upper coupling and the lower coupling has a regular polygonal head or a regular polygonal frustum, and the other has a corresponding regular polygonal cavity or a regular polygonal cavity.

[0016] Optionally, the edge of the regular polygonal head or the regular polygonal frustum has 3-6 edges.

[0017] Optionally, the upper coupling or the lower coupling with the regular polygonal cavity has a conical guide cover.

[0018] Optionally, the regular polygonal head has a tapered head.

[0019] The regular polygonal cavity has a tapered mouth.

[0020] Optionally, the brake device further comprises:

[0021] A mounting support is used for the mounting of the brake device on the lifting device, and is assembled through a bearing between the rotors, and the determined rotation axis of the bearing is in the direction of the engagement of the upper coupling and the lower coupling;

[0022] A housing is fixedly installed on the mounting support and is used to accommodate the bearing, and a through hole is left for the lower coupling to enter the housing to connect with the rotor;

[0023] Correspondingly, the brake device is installed in the housing.

[0024] Optionally, the bearing is configured as a bearing set, which is a pair of angular contact bearings or includes a thrust bearing providing thrust support and a deep groove ball bearing providing circumferential support.

[0025] Optionally, the upper end of the upper coupling has a flange.

[0026] Correspondingly, the upper coupling and the lower end of the boom are connected by screws or bolts.

[0027] Optionally, the lifting device comprises:

[0028] A lifting cylinder, a push rod of which directly supports the brake device or a movable support;

[0029] A guide device, one of which is arranged on each side of the lifting cylinder, forming a guide pair with the brake device or the movable support.

[0030] According to the second aspect of the embodiment of the present application, a shot blasting machine is provided, which comprises the auxiliary position changing device for the unloading of the shot blasting machine according to the first aspect of the embodiment of the present application.

[0031] In the embodiment of the present application, a special device is provided to assist the position changing of the shot blasting hanger. After the shot blasting hanger is changed to the position, the lifting device drives the brake device to rise. The brake device comprises a rotor and a stator, wherein the rotor is provided with a lower connector, and the lower end of the boom of the shot blasting hanger is provided with an upper connector. When the brake device rises to the position, the upper connector is combined with the lower connector. The rotor of the brake device is used to adaptively make the upper connector and the lower connector relatively accurate. It is known that the position after the position changing is not necessarily very accurate, but is generally in the predetermined position. For the connector, it is generally provided with a certain adaptive alignment adjustment capability. Further, the brake device is operated to make the stator and the rotor engage, so that the rotor is not movable. At this time, the position of the shot blasting hanger after the position changing can be locked, and the position of the shot blasting hanger after the position changing can be relatively stably maintained. Compared with the gear pair, the brake pad of the brake device will also be worn, but the wear of the brake pad is different from the failure of the gear pair. The brake pad itself is a consumable, and the wear thereof is expected and acceptable. Therefore, compared with the gear pair, the auxiliary position changing device for the unloading of the shot blasting machine according to the embodiment of the present application can effectively improve the service life of the shot blasting hanger and the supporting device thereof. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of the auxiliary position changing device for the unloading of the shot blasting machine and the shot blasting hanger in a disengaged state in an embodiment.

[0033] Figure 2 It is a structural schematic diagram of the auxiliary position changing device for the unloading of the shot blasting machine and the shot blasting hanger in a combined state in an embodiment.

[0034] Figure 3 It is a structural schematic diagram of the brake device in an embodiment.

[0035] Figure 4 It is a structural schematic diagram of the four-square cone head in an embodiment.

[0036] In the figure: 1. base plate, 2. base, 3. guide rail, 4. roller, 5. movable support, 6. brake device, 7. square cone sleeve, 8. square cone head, 9. lifting rod, 10. hook, 11. lifting ring, 12. lifting hook, 13. cylinder head socket cap screw, 14. elastic washer, 15. lifting cylinder, 16. cylinder seat, 17 cylinder head socket cap screw, 18. elastic washer, 19. mounting plate, 20. support, 21. housing, 22. rotating seat, 23. thrust bearing, 24. top plate, 25. sleeve, 26. deep groove ball bearing, 27. brake disc, 28. pneumatic brake component, 29. cylinder head socket cap screw, 30. elastic washer, 31. brake pad, 32. side wall plate, 33. bottom plate, 34. weld, 35. mounting hole, 36. mounting seat, 37. square head. DETAILED DESCRIPTION

[0037] In Figure 1 and Figure 2 the example structure, the corresponding shot blasting machine is a hook type shot blasting machine. Due to the cooperation of the lifting hook 12 and the lifting ring 11, the shot blasting hanger will not be in a static stable state after the position change due to inertia, and thus cannot be quickly stopped. Therefore, in some implementations, a device for assisting the stopping of the hook type shot blasting machine can be provided. It should be noted that the embodiment of the present application provides a position change assisting device for the shot blasting hanger, but not all. The content described in the embodiment of the present application is only used to illustrate the content required by the unloading assisting position change device, and the other components of the shot blasting machine do not belong to the content that should be described in the present application.

[0038] In the embodiment of the present application, one of the corresponding technical conditions is that the shot blasting hanger is in a static stable state before unloading after the position change, so that the square cone head 8 and the square cone sleeve 7 in Figure 1 are roughly in the upper and lower alignment state. This is a pre-set technical condition, and not the purpose of the problem to be solved by the embodiment of the present application.

[0039] It should be noted that in some implementations, the shot blasting hanger constitutes a driven gear shaft, which can be quickly and statically stable after stopping, and such a shot blasting hanger is also one of the main shot blasting hangers at present. Under this condition, the use of the unloading assisting position change device will have better technical conditions.

[0040] In the embodiments of the present application, the provided auxiliary position changing device for loading and unloading is mainly used for locking the position of the shot blasting hanger by locking the lower end of the shot blasting hanger, and the position is obviously the corresponding angle position of the rotating movement, so the locking should at least include the rotating degree of freedom of the shot blasting hanger, and can not include the degree of freedom in the up-down direction. In other words, in the embodiments of the present application, for example, the quadrangular conical sleeve 7 is used as a constraint to at least provide the function of limiting the rotating degree of freedom of the shot blasting hanger, so as to ensure that the shot blasting hanger is currently at a determined angle position during loading and unloading, which is beneficial to the automatic loading and unloading of the robot.

[0041] In addition, it can also be known that, for the automatic loading and unloading of the robot, since the height of the shot blasting hanger is basically determined, the main control is whether the current angle position of the shot blasting hanger is determined, so for example, the quadrangular conical sleeve 7 can not be used as a radial constraint of the boom 9, although in some embodiments, the mechanical contact between the quadrangular conical sleeve 7 and the quadrangular conical head 8 in the radial direction of the boom 9 can be caused by the stroke control of the lifting cylinder 15 as shown in the background art. Figure 1

[0042] As mentioned above, in the embodiments of the present application, the provided auxiliary position changing device for loading and unloading is mainly used for positioning and limiting after the position changing of the shot blasting hanger, and is a shot blasting hanger position changing auxiliary device, not the whole content of the position changing, so the content other than this will not be described here.

[0043] In the embodiments of the present application, the provided auxiliary position changing device for loading and unloading is used for the auxiliary position changing of the shot blasting hanger of the shot blasting machine, and needs to be provided with an upper coupling, a brake device 6, a lower coupling, and a lifting device. The brake device 6 is mainly used for locking after the engagement of the lower coupling and the upper coupling, and does not mean that it belongs to the brake device 6 in the literal sense for vehicle braking, although a brake device 6 similar to that for vehicle braking is adopted in the preferred embodiments. Moreover, from the functional point of view, limiting the rotation of the upper coupling does not necessarily require a brake device 6 with the function of vehicle braking.

[0044] Regarding the basic structure of the shot blasting hanger, it is described in the background art and the cited Chinese patent document CN117001544A, and a supplementary description is provided here. The boom 9 can be a central rod or a set of rod members installed in the circumferential direction of a rotating disc. For the boom 9 used as a central rod, the positioning is relatively easy, while for the set of rod members located in the circumferential direction of the rotating disc, the positioning is relatively difficult, and other devices can be used to assist the auxiliary positioning of the rod members.

[0045] ​Regardless of the type of the suspender 9, the upper joint is installed at the lower end of the suspender 9, where the upper and lower are determined based on the literal positional relationship, and the upper joint is a term name determined with respect to the lower joint located below it in position.

[0046] The assembly between the upper joint and the suspender 9 can be detachable or non-detachable, and detachable is preferred.

[0047] When detachable is used, the purpose is to improve the maintainability of the upper unloading auxiliary displacement device, and as described above, friction will occur during the alignment and combination of the upper joint and the lower joint, and both the upper joint and the lower joint will be worn. When the wear is relatively large, the gap between the upper joint and the lower joint will be large, which will affect the accuracy of positioning, therefore, both the upper joint and the lower joint can be used as consumables, and the detachability needs to be considered to replace new joints.

[0048] Similarly, the lower joint is also preferably installed on the brake device 6 in a detachable manner.

[0049] The purpose of using non-detachable connection is mainly to consider the assembly reliability, because both the upper and lower materials will produce a certain impact and vibration, and for example, vibration is one of the main reasons for the failure of threaded pairs. In other words, for example, bolt connection is prone to bolt shedding in places with relatively large impact.

[0050] Non-detachable connection is preferably riveting and welding, and riveting is preferred over welding, because although riveting belongs to non-detachable connection, it does not harm the connected parts, and the upper joint can be replaced by damaging the rivet. For welding, the upper joint and the suspender 7 form an integral structure, and cutting off the upper joint often leads to damage to the suspender 7, and it is not easy to obtain the position consistency of the replaced upper joint and the original upper joint.

[0051] In Figure 4 In the example structure, the mounting seat 36 of the square taper head 8 used as the upper joint is a flange structure, and the mounting seat 36 is distributed with six mounting holes 35 to be installed at the lower end of the suspender 9 by screw connection. Correspondingly, the lower end of the suspender 9 is provided with screw holes.

[0052] Regarding Figure 4 The mounting hole 35 shown in the figure can also be a light hole, and under the condition that the suspender 9 is provided with screw holes, it can meet the fixed installation of 36. In some embodiments, the mounting hole 35 can constitute a rivet hole, and riveting can be used to install the square taper head 8 at the lower end of the suspender 9, for example.

[0053] It should also be noted that the rotation of the boom 7 to a predetermined angle position can be considered a condition in this embodiment of the invention, and the current angle position is considered to be approximately accurate. The so-called auxiliary displacement, in this embodiment, focuses more on maintaining the state after displacement, i.e., limiting the position. Therefore, the braking device 6 includes a rotor; in other words, if the rotor with the lower connector is not accurately aligned with the upper connector, the rotor's movement is used to make them accurately aligned, and then the rotor is locked, thereby achieving the limiting position. It is also evident that in this embodiment of the invention, the main purpose of the upper unloading auxiliary displacement device is to limit the position, not to position it. Positioning can be achieved by other equipment, which is not part of the scope of this invention and will not be described further here.

[0054] The braking device 6 can be understood as a locking device adapted to the current angle position of the boom 9. It is used to lock the boom 9. Therefore, the lower coupling on the braking device 6 should have good alignment accuracy with the upper coupling. Under this condition, due to the accuracy of the docking itself and the positioning accuracy of the aforementioned positioning equipment, the braking device 6 often needs to have a certain adjustment capability. Therefore, the braking device 6 has a stator and a rotor, where the rotor is the controlled object of the braking device 6. After precise alignment, the rotor is locked by the stator to form a limit.

[0055] Regarding the rotor, such as Figure 3 The rotating base 22 shown has its upper end used to mount the lower connector, as shown. Figure 1 The square pyramid sleeve 7 shown.

[0056] It should be understood that, referring to the literal meaning of brake device 6, the essential components of brake device 6 include a brake mechanism, for example... Figure 3 The pneumatic brake component 28 shown is used to operate the stator and rotor to engage and lock the rotor, thereby locking the square cone sleeve 7 mounted on, for example, the rotary seat 22, and then locking the boom 9 through the engagement of the square cone sleeve 7 and the square cone head 8.

[0057] For example, the aforementioned pneumatic brake component 28 is mainly used to realize the engagement and disengagement between the stator and the rotor, thereby realizing the state transition between locking the rotor and unlocking the rotor.

[0058] The stator and rotor are equipped with brake pads 31, such as Figure 3 The brake disc 27 mounted on the transfer seat 22 and the brake pad 31 mounted on the caliper jaws of the pneumatic brake component 28 are respectively. The brake disc 27 generally has a seat and an auxiliary brake pad mounted on the seat. The clutch is achieved by the cooperation of the brake pad 31 and the auxiliary brake pad.

[0059] In order to avoid interference with the shot blasting hanger in normal operation, the brake device 6 should be separated from the shot blasting hanger when the shot blasting hanger is not required to be locked, and the separation distance should be sufficient to ensure that the brake device 6 cannot not only contact the shot blasting hanger, but also cannot contact the workpiece loaded on the shot blasting hanger. Therefore, the skilled person in the art has a certain design basis for the lifting device, and will not be described here.

[0060] The lifting device is simply used to drive the lifting of the brake device to clear the shot blasting hanger and the workpiece loaded on the shot blasting hanger.

[0061] Based on the lifting of the lifting device, the lower coupling is sent to its working position, so as to be combined with the upper coupling for locking the upper coupling, and further locking the shot blasting hanger.

[0062] Regarding the combination mode of the upper coupling and the lower coupling, in Figure 1 and Figure 2 In the exemplary structure, the combination mode between the square cone head 8 and the square cone sleeve 7 belongs to one of the profile connections in the mechanical field.

[0063] The square cone head 8 is a regular quadrangular pyramid structure, and the square cone sleeve 7 is a corresponding regular quadrangular pyramid sleeve structure, which can eliminate the initial alignment error based on the guide of the conical surface.

[0064] It should be noted that when using profile matching, for example, the square cone head 8 has four edges, and the number of edges is actually adapted to the predetermined corner positions of the shot blasting hanger, that is, for example, the square cone head 8 has four edges, and the corner positions of the shot blasting hanger have four.

[0065] If the corner positions of the shot blasting hanger are more, then the corresponding upper coupling or lower coupling needs to be configured with more edges.

[0066] In Figure 1 In the exemplary structure, the square cone sleeve 7 and the square cone head 8 can obviously be interchanged in position, that is, the square cone head 8 can be installed on the brake device 6, and the square cone sleeve 7 can be installed on the boom 9.

[0067] The square cone head 8 with a conical structure itself has a guide structure, and if the square cone sleeve 7 is replaced by a regular polygon sleeve, an auxiliary guide structure needs to be adapted to avoid the problem that the upper coupling and the lower coupling cannot be combined when the initial alignment accuracy is not high.

[0068] Further, in Figure 1In the example structure, even if the quadrangular conical sleeve 7 structure is adopted, an auxiliary guide structure is arranged at the upper part of the quadrangular conical sleeve 7, that is, a sleeve for flaring is arranged, the slope of the sleeve is greater than the taper of the part of the quadrangular conical sleeve 7 for cooperating with the quadrangular conical head 8, and is beneficial to the guidance under the initial alignment condition.

[0069] It can also be seen that even if the taper structure has a self-guiding function, the sleeve still needs to be arranged in the preferred embodiment to achieve a larger range of alignment. The application of the sleeve needs to be considered especially for a cavity with multiple edges, such as a regular polygonal prism cavity.

[0070] Further, for the case that one of the upper and lower connectors is a regular polygonal head and the other is a regular polygonal cavity, first, the regular polygonal head can have a taper head or a chamfer, and the mouth of the regular polygonal cavity is tapered or has a chamfer. And for the regular polygonal cavity, it is preferably provided with the sleeve to assist in alignment.

[0071] As mentioned earlier, in the preferred embodiment, the edges of the regular polygonal head or the regular polygonal frustum are at the same corner positions as the shot hanging rack, and in some embodiments, one corner position can correspond to the upper and lower discharging of two rows of hooks. Under this condition, the number of edges of the regular polygonal head or the regular polygonal frustum is also the same as the corner positions of the shot hanging rack, and is an integer multiple of the number of hook rows. If the number of rows is less than or equal to 6, the number of rows is the same as the number of corner positions, and when the number of rows is even, the number of corner positions can be selected to be half of the number of rows. Under this condition, the number of corner positions is not more than 6 and not less than 3. Based on the same number of corner positions and edges of the regular polygonal frustum, the number of edges of the regular polygonal frustum is 3-6.

[0072] The way of realizing circumferential connection based on axial movement is spline connection, which has good reliability, but also needs to be arranged with a guide structure. On the one hand, the spline head and the spline sleeve can be adapted to chamfer, and on the other hand, the sleeve can be arranged with the sleeve to facilitate the initial alignment of the upper and lower connectors.

[0073] Regarding the brake device 6, it can have a shell 21 or not. The shell 21 is mainly arranged to protect the pneumatic brake components 28. It should be known that even if the conventional brake pad 31 is generally exposed, such as the brake pad 31 and the brake disc 27 arranged on the vehicle are installed at the wheel assembly and do not need to be protected by the shell.

[0074] In Figure 3In the example structure, the main purpose of the brake device 6 with the shell 21 is to include the brake device 6 with the rotary part, specifically the rotor and its supporting components, which are more sensitive to dust than the brake pads 31 and the brake disc 27, but in some embodiments, if the shell 21 is not provided, the bearings can be selected as covered bearings.

[0075] Figure 3 In the example structure, three bearings are provided, two of which are thrust bearings 23, and one is a deep groove ball bearing 26, wherein one of the thrust bearings 23 is installed between the upper end of the rotating seat 22 and the top plate 24 of the shell 21, and the other is installed between the rotating seat 22 and the support 20.

[0076] The deep groove ball bearing 26 is sleeved on the rotating seat 22, and the outer ring of the deep groove ball bearing 26 is located in the sleeve 25, which is a circular sleeve with its upper end welded to the top plate 24.

[0077] The extension direction of the rotating axis of the rotating seat 22 is consistent with the direction of the combination of the upper and lower connectors.

[0078] The lower end of the rotating seat 22 is provided with the brake disc 27, and the brake pads 31 are arranged on the upper side, the lower side, or both sides of the brake disc 27, and the brake pads 31 are driven by the pneumatic brake component 28 fixedly installed on the side wall plate 32 of the shell 21.

[0079] The support 20 is a fixed seat and is directly or indirectly fixedly installed on the lifting part of the lifting device, for example.

[0080] In the example structure, the mounting plate 19 can be Figure 3 In the example structure, the mounting plate 19 can be Figure 1 The support 20 and the mounting plate 19 are assembled by screws.

[0081] Regarding the lifting device, it realizes lifting movement, which belongs to linear motion in the mechanical field. Linear motion and rotary motion are the two most basic forms of motion in the mechanical field, and can be realized in many ways. In the embodiment of the present application, after the component or mechanism capable of realizing linear motion is configured, a guide device needs to be further configured to improve the overall stability, and some mechanisms or components have guide devices themselves, such as the nut and screw mechanism, which usually has a guide rod. For example, the hydraulic cylinder, in terms of support, is widely used in engineering machinery due to its high power density, and a single hydraulic cylinder can independently constitute a lifting device under the condition that it is reliably fixed at the seat end.

[0082] In the example structure, the lifting device includes two vertical guide rails 3 in addition to the lifting cylinder 15, and the guide rails 3 guide the movable bracket 5 with the roller 4. Figure 1 In the example structure, the lifting device includes two vertical guide rails 3 in addition to the lifting cylinder 15, and the guide rails 3 guide the movable bracket 5 with the roller 4.

[0083] The movable support 5 is connected to the push rod of the lifting cylinder 15, and is used to support the brake device 6, so that the four-square cone sleeve 7 carried by the brake device 6 is combined with the four-square cone head 8 at the lower end of the boom 9 by means of the pushing force of the lifting cylinder 15.

Claims

1. A loading and unloading auxiliary positioning device, used for auxiliary positioning of the shot blasting hanger of a shot blasting machine, characterized in that, The loading and unloading auxiliary positioning device includes: The upper connector is installed at the lower end of the hanger rod of the shot blasting rack; A braking device, located below the upper coupling, has a rotor and a stator, and brake pads adapted to the rotor and stator. The braking device further includes a drive mechanism for driving the stator to engage or disengage the rotor and stator. The lower connector is mounted on the rotor and aligned with the upper connector in the vertical direction. A lifting device is provided to carry the braking device and drive the braking device to rise and fall, thereby engaging the lower connector with the upper connector.

2. The loading and unloading auxiliary positioning device according to claim 1, characterized in that, The upper connector and the lower connector are connected by a spline connection or a surface connection. When using a surface connection, one of the upper connector and the lower connector has a regular polyprism head or a regular polypyramid frustum, and the other has a corresponding regular polyprism cavity or a regular polypyramid cavity.

3. The loading and unloading auxiliary positioning device according to claim 2, characterized in that, A regular polyhedron head or a regular polyhedron frustum has 3 to 6 edges.

4. The unloading auxiliary positioning device according to claim 2 or 3, characterized in that, The upper or lower connector having a regular polyprismatic cavity has a conical inlet cover.

5. The unloading auxiliary positioning device according to claim 2 or 3, characterized in that, The head of a regular polygonal prism has a conical tip; The regular polygonal prism cavity has a conical opening.

6. The loading and unloading auxiliary positioning device according to claim 1, characterized in that, The braking device further includes: Mounting brackets are used for mounting the brake device on the lifting device, and are assembled between the rotors through bearings. The direction of the rotation axis determined by the bearings is the direction of the engagement of the upper and lower couplings. The housing is fixedly mounted on the mounting bracket to house the bearing and has a through hole for the lower connector to be inserted into the housing and connected to the rotor. Accordingly, the braking device is installed inside the housing.

7. The loading and unloading auxiliary positioning device according to claim 6, characterized in that, The bearings are configured as a bearing assembly, which is a pair of angular contact bearings, or includes a thrust bearing that provides thrust support and a deep groove ball bearing that provides circumferential support.

8. The loading and unloading auxiliary positioning device according to claim 1, characterized in that, The upper end of the upper connector has a flange; Accordingly, the upper connector is connected to the lower end of the boom using screws or bolts.

9. The loading and unloading auxiliary positioning device according to claim 1, characterized in that, The lifting device includes: A lifting cylinder, the push rod of which directly supports the braking device or a movable bracket; The guide device is provided on each of the opposite sides of the lifting cylinder, and the lifting cylinder forms a guide pair with the braking device or the movable bracket.

10. A shot blasting machine, characterized in that, Includes the unloading auxiliary displacement device as described in any one of claims 1 to 9.

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