Shaft body replacement auxiliary device

Abstract

The embodiment of the utility model provides a shaft body replacement auxiliary device. The shaft body replacement auxiliary device comprises a rack, a lifting table and a driving kit. The lifting platform is movably connected with the rack; the driving sleeve is in driving connection with the lifting table and used for driving the lifting table to move relative to the rack. The driving kit comprises a speed reduction assembly, a non-return assembly and a driving input piece, the driving input piece is in transmission connection with the speed reduction assembly, the speed reduction assembly is in driving connection with the lifting table, and the non-return assembly is in transmission connection with the speed reduction assembly and used for allowing the speed reduction assembly to conduct transmission in at least one direction and stopping transmission in the corresponding opposite direction. The rack can provide support, and the lifting table is movably connected with the rack and used for bearing the shaft body and moving the shaft body. Force input by the driving input part is amplified through the speed reduction assembly, and then the bearing shaft body is helped. And the non-return assembly is in transmission connection with the speed reduction assembly and performs non-return, so that mechanical failure of the shaft body replacement auxiliary device due to extrusion influence of the shaft body is prevented, and damage to an operator or the shaft body replacement auxiliary device is prevented.

Description

Technical Field

[0001] This application relates to the field of die-cutting manufacturing, and in particular to an auxiliary device for shaft replacement. Background Technology

[0002] Shafts with a certain length and curved surface are a common type of component with a specific shape in industrial production, such as rotating shafts, or more specifically, cutting spindles. Cutting spindles can be used on various processing machines, such as slitting machines, and have a wide range of applications. In some applications, the shaft needs to be removed from the machine for adjustment and reinstallation. During the disassembly and assembly of the shaft, due to its weight and length, and the fact that it is usually installed in a relatively confined space, it is difficult to handle manually. Furthermore, the surface of the shaft may have sharp or hard objects such as blades, making it even more difficult to handle manually. How to solve the above problems and provide a shaft replacement auxiliary device is something that those skilled in the art need to consider. Utility Model Content

[0003] To address the problems in the prior art, embodiments of this application provide a shaft replacement auxiliary device.

[0004] This application provides a shaft replacement auxiliary device, which includes:

[0005] frame;

[0006] A lifting platform, which is movably connected to the frame;

[0007] A drive kit, which is connected to the lifting platform drive, is used to drive the lifting platform to move relative to the frame;

[0008] The drive kit includes a deceleration component, a backstop component, and a drive input component. The drive input component is drivenly connected to the deceleration component, the deceleration component is drivenly connected to the lifting platform, and the backstop component is drivenly connected to the deceleration component, allowing the deceleration component to drive in at least one direction and blocking the corresponding reverse direction of transmission.

[0009] This application provides a shaft replacement auxiliary device, which includes a frame, a lifting platform, and a drive assembly. The lifting platform is movably connected to the frame. The drive assembly is driven by the lifting platform and is used to drive the lifting platform to move relative to the frame. The drive assembly includes a reduction gear assembly, a backstop assembly, and a drive input component. The drive input component is driven by the reduction gear assembly, the reduction gear assembly is driven by the lifting platform, and the backstop assembly is driven by the reduction gear assembly, allowing the reduction gear assembly to move in at least one direction and blocking movement in the corresponding opposite direction.

[0010] In one embodiment, the anti-reverse assembly includes a ratchet and a pawl. The ratchet is configured to be connected to the deceleration assembly and to rotate integrally with it. The pawl is configured to engage with the ratchet in one direction, allowing the ratchet to rotate in one direction and preventing the ratchet from rotating in the corresponding opposite direction.

[0011] In one embodiment, the ratchet has a plurality of spaced protrusions on its outer periphery, and a recessed portion is provided between any two adjacent protrusions. The pawl includes a stop end with a bevel on one side. The stop end is configured to extend into one of the recesses and can be withdrawn from the recess by abutting against the protrusion and the bevel.

[0012] In one embodiment, the anti-reverse assembly further includes an elastic element and a mounting base, wherein the two ends of the elastic element are respectively connected to the mounting base and the pawl, for driving the pawl to abut toward the side where the ratchet is located.

[0013] In one embodiment, the anti-reverse assembly further includes a direction adjustment member configured to connect with the pawl and be able to rotate integrally. The direction adjustment member has a locking protrusion, and the mounting base has at least two spaced-apart slots. The locking protrusion is disposed in one of the two slots.

[0014] In one embodiment, the mounting base has a through hole, the through hole and the slot extend along the telescopic direction, at least two slots are spaced apart on different sides of the through hole, the protrusion extends movably into the slot along the telescopic direction, the pawl is movably disposed in the through hole along the telescopic direction, and the elastic element is clamped between the mounting base and the pawl along the telescopic direction.

[0015] In one embodiment, the deceleration assembly includes a plurality of large gears, a plurality of small gears, and a plurality of shafts connecting at least one of the large gears and / or at least one of the small gears. The drive input is driven to one of the small gears, the lifting platform is driven to one of the large gears, and the anti-reverse assembly is connected to one of the shafts.

[0016] In one embodiment, the deceleration assembly is fixed to the frame, the deceleration assembly engages with the lifting platform, and the lifting platform slides with the frame.

[0017] In one embodiment, the lifting platform includes a driven component, a connecting component, a guide component, and a supporting component. The driven component is driven by the reduction gear assembly for moving along the lifting direction. The connecting component is integrally connected to the driven component. The guide component is integrally connected to the connecting component. The guide component is also slidably engaged with the frame along the lifting direction. The supporting component is located on the side of the connecting component away from the driven component along the lifting direction.

[0018] In one embodiment, the support member has a support groove with an opening on one side along the lifting direction, so that the support member can support a shaft with a curved surface.

[0019] Furthermore, in the shaft replacement auxiliary device provided in this application embodiment, the frame provides necessary support, the lifting platform is movably connected to the frame to receive the shaft and move its position, and the drive assembly is driven to the lifting platform to move the shaft. The drive input component is driven to the reduction assembly and, through the reduction assembly, is driven to the lifting platform. The reduction assembly amplifies the force input to the drive input component, thereby helping to support the shaft. The anti-reverse assembly is driven to the reduction assembly, allowing the reduction assembly to drive in at least one direction and blocking the corresponding reverse direction of transmission, preventing mechanical failure of the shaft replacement auxiliary device due to shaft compression, and further preventing damage to the operator or the shaft replacement auxiliary device. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of the shaft replacement auxiliary device and the shaft provided in the embodiments of this application.

[0021] Figure 2 This is a three-dimensional schematic diagram of an angle of the shaft replacement auxiliary device provided in the embodiment of this application.

[0022] Figure 3 This is a three-dimensional schematic diagram of the shaft replacement auxiliary device provided in the embodiment of this application from another angle.

[0023] Figure 4 A three-dimensional schematic diagram of the frame of the shaft replacement auxiliary device provided in the embodiment of this application.

[0024] Figure 5 This is a three-dimensional schematic diagram of the lifting platform of the shaft replacement auxiliary device provided in the embodiment of this application at one angle.

[0025] Figure 6 This is a perspective view of the lifting platform of the shaft replacement auxiliary device provided in the embodiment of this application from another angle.

[0026] Figure 7 A perspective view of the drive kit for the shaft replacement auxiliary device provided in the embodiments of this application.

[0027] Figure 8 A partial structural schematic diagram of the drive kit for the shaft replacement auxiliary device provided in this application embodiment.

[0028] Figure 9A perspective view showing the deceleration component, the anti-reverse component, and the drive input component of the drive kit of the shaft replacement auxiliary device provided in the embodiments of this application in a mating state.

[0029] Figure 10 A perspective view of the anti-reverse component of the drive kit of the shaft replacement auxiliary device provided in the embodiments of this application.

[0030] Figure 11 for Figure 10 A cross-sectional view along the XI-XI direction.

[0031] Explanation of main component symbols

[0032] Shaft replacement auxiliary device 10

[0033] Rack 11

[0034] Side bracket 111

[0035] Bottom bracket 112

[0036] Central support 113

[0037] Upper support 114

[0038] Moving part 115

[0039] Guide component 116

[0040] Slider 117

[0041] Handle 118

[0042] Lifting Platform 12

[0043] Connector 121

[0044] Driven component 122

[0045] First support frame 1221

[0046] rack 1222

[0047] Guide component 123

[0048] Second support frame 1231

[0049] Guide rail 1232

[0050] Support component 124

[0051] Support groove 1240

[0052] Driver Kit 13

[0053] Casing 131

[0054] First side panel 1311

[0055] Second side panel 1312

[0056] Third side panel 1313

[0057] Fourth side panel 1314

[0058] Base plate 1315

[0059] Top plate 1316

[0060] Reduction assembly 132

[0061] 1320 shaft

[0062] First sub-axis 1321

[0063] Second sub-axis 1322

[0064] Third sub-axis 1323

[0065] Large Gear 1324

[0066] Small gear 1325

[0067] Anti-reverse component 133

[0068] Ratchet 1331

[0069] Projection 13311

[0070] Recess 13312

[0071] 1332 thorn claw

[0072] Check valve end 13321

[0073] Incline 13322

[0074] 13323 of the pole

[0075] Mounting base 1333

[0076] Through hole 13331

[0077] Card slot 13332

[0078] Elastic component 1334

[0079] Directional adjustment component 1335

[0080] Indicator arrow 13351

[0081] 13352

[0082] Drive input device 134

[0083] First direction X

[0084] Second direction Y

[0085] Third direction Z

[0086] Lifting direction G

[0087] Extension / Retraction Direction F

[0088] Shaft 2

[0089] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0090] The following description will be given with reference to the accompanying drawings for a more complete description of the present application. The drawings illustrate exemplary embodiments of the present application. However, the present application may be implemented in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. These exemplary embodiments are provided to make the present application thorough and complete, and to fully convey the scope of the present application to those skilled in the art. Similar reference numerals denote the same or similar components. The terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to limit the present application. As used herein, the singular forms “a,” “an,” and “the” are intended to also include the plural forms unless the context clearly indicates otherwise. Furthermore, when used herein, “comprising” and / or “including” and / or “having,” integers, steps, operations, components, and / or components, but without excluding the presence or addition of one or more other features, regions, integers, steps, operations, components, and / or groups thereof. Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. Furthermore, unless explicitly defined herein, terms such as those defined in a general dictionary should be interpreted as having the same meaning as they have in the relevant technology and in the content of this application, and should not be interpreted as having an idealized or overly formal meaning.

[0091] The following description, in conjunction with the accompanying drawings, illustrates exemplary embodiments. It should be noted that components depicted in the drawings are not necessarily shown to scale; and identical or similar components will be designated with the same or similar reference numerals or similar technical terms.

[0092] Shafts with a certain length and curved surface are commonly found in industrial production as specific shaped components, such as rotary shafts, or more specifically, cutting spindles. Cutting spindles are widely used on various processing machines, such as slitting machines. In some applications, the shaft needs to be removed from the machine for adjustment and reinstallation. During the disassembly and reassembly of the shaft, its weight and length, coupled with its often confined space, make it difficult to handle manually. Furthermore, the shaft surface may have sharp or hard objects such as blades, further complicating manual handling. Therefore, addressing these issues and providing an auxiliary device for shaft replacement is a crucial consideration for those skilled in the art.

[0093] Correspondingly, this application provides a shaft replacement auxiliary device, which includes a frame, a lifting platform, and a drive assembly. The lifting platform is movably connected to the frame. The drive assembly is driven by the lifting platform and is used to drive the lifting platform to move relative to the frame. The drive assembly includes a reduction gear assembly, a backstop assembly, and a drive input component. The drive input component is driven by the reduction gear assembly, the reduction gear assembly is driven by the lifting platform, and the backstop assembly is driven by the reduction gear assembly, allowing the reduction gear assembly to move in at least one direction and blocking movement in the corresponding opposite direction.

[0094] Furthermore, in the shaft replacement auxiliary device provided in this application embodiment, the frame provides necessary support, the lifting platform is movably connected to the frame to receive the shaft and move its position, and the drive assembly is driven to the lifting platform to move the shaft. The drive input component is driven to the reduction assembly and, through the reduction assembly, is driven to the lifting platform. The reduction assembly amplifies the force input to the drive input component, thereby helping to support the shaft. The anti-reverse assembly is driven to the reduction assembly, allowing the reduction assembly to drive in at least one direction and blocking the corresponding reverse direction of transmission, preventing mechanical failure of the shaft replacement auxiliary device due to shaft compression, and further preventing damage to the operator or the shaft replacement auxiliary device.

[0095] The specific embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0096] like Figures 1 to 3 As shown, this application embodiment provides a shaft replacement auxiliary device 10, which includes a frame 11, a lifting platform 12, and a drive assembly 13. The frame 11 is configured to move relative to a bearing surface (e.g., the ground), and the lifting platform 12 and the drive assembly 13 are respectively connected to the frame 11. The lifting platform 12 is movably connected to the frame 11, and the drive assembly 13 is drivenly connected to the lifting platform 12 for driving the lifting platform 12 to move relative to the frame 11 to carry and / or transport the shaft 2.

[0097] Understandably, the frame 11 provides the necessary support, the lifting platform 12 is movably connected to the frame 11 to receive the shaft 2 and move its position, and the drive assembly 13 is driven to the lifting platform 12 to move the shaft 2.

[0098] In one embodiment, the drive kit 13 includes a deceleration assembly 132, a reverse stop assembly 133, and a drive input component 134. The drive input component 134 is drive-connected to the deceleration assembly 132, the deceleration assembly 132 is drive-connected to the lifting platform 12, and the reverse stop assembly 133 is drive-connected to the deceleration assembly 132, allowing the deceleration assembly 132 to drive in at least one direction and stopping the corresponding reverse direction of drive.

[0099] In this embodiment, the deceleration assembly 132 is fixed to the frame 11, the deceleration assembly 132 engages with the lifting platform 12, and the lifting platform 12 slides with the frame 11.

[0100] Understandably, the drive input component 134 is connected to the reduction gear assembly 132, and is also connected to the lifting platform 12 via the reduction gear assembly 132. The reduction gear assembly 132 amplifies the force input by the drive input component 134, thereby helping to support the shaft 2. The anti-reverse assembly 133 is connected to the reduction gear assembly 132, allowing the reduction gear assembly 132 to drive in at least one direction and blocking the corresponding reverse direction of transmission. This prevents the shaft replacement auxiliary device 10 from mechanically failing due to the pressure of the shaft 2, and further prevents damage to the operator or the shaft replacement auxiliary device 10.

[0101] In one embodiment, for ease of understanding, the first direction X, the second direction Y, and the third direction Z are introduced for description. The first direction X, the second direction Y, and the third direction Z are three non-parallel directions in the spatial coordinate system. In subsequent embodiments, the first direction X, the second direction Y, and the third direction Z are described as three mutually perpendicular reference directions in the three-dimensional Cartesian coordinate system. The directions shown in the embodiments of this application are used to help understand the relative positions of the components, but do not limit their specific directions.

[0102] In this embodiment, the first direction X corresponds to the length direction of the shaft replacement auxiliary device 10 when it is in normal use (or can be understood as the direction in which the shaft replacement auxiliary device 10 moves forward or backward along a straight line), the second direction Y corresponds to the width direction of the shaft replacement auxiliary device 10 when it is in normal use, and the third direction Z corresponds to the height direction of the shaft replacement auxiliary device 10 when it is in normal use.

[0103] Further integration Figure 4As shown, in one embodiment, the frame 11 includes side supports 111, a bottom support 112, a middle support 113, an upper support 114, a moving component 115, and a guide component 116. The two side supports 111 are spaced apart along a second direction Y. The bottom support 112, middle support 113, and upper support 114 all extend along the second direction Y and are respectively connected to the two side supports 111. The bottom support 112, middle support 113, and upper support 114 are sequentially spaced apart along a third direction Z. The moving component 115 is connected to the bottom support 112. The two guide components 116 are respectively connected to the two side supports 111. The middle support 113 is connected to the drive assembly 13. The upper support 114 is connected to the lifting platform 12. The lifting platform 12 also engages with the two guide components 116 for guidance.

[0104] In this embodiment, the side bracket 111, bottom bracket 112, middle bracket 113, and upper bracket 114 are all formed by splicing multiple crossbeams, giving them both strong connection and lightweight design. The lifting platform 12 can pass through the hollow area of ​​the upper bracket 114 (formed by the spacing of adjacent crossbeams) until it connects with the drive assembly 13 located on the middle bracket 113. The moving component 115 can be multiple rollers, which are rotatably connected to the bottom bracket 112. The moving component 115 allows the shaft replacement auxiliary device 10 to move, improving the ease of use of the shaft replacement auxiliary device 10. Two guide components 116 are respectively located on the two side brackets 111. Each guide component 116 is located on the side of one side bracket 111 facing away from the other side bracket 111 along the second direction Y. The guide component 116 may be equipped with a slider 117. The middle bracket 113 may also be provided with a connection point for connecting with the drive assembly 13 and for positioning the drive assembly 13 during the connection process.

[0105] In one embodiment, the frame 11 includes a handle 118, which can be connected to any one or more of the side brackets 111, bottom bracket 112, middle bracket 113, and upper bracket 114 for the user to grip, thereby making it easier to operate the shaft replacement auxiliary device 10. In this embodiment, two handles 118 are respectively provided on two side brackets 111 for illustration. In other embodiments, the number and connection position of the handles 118 can be changed according to actual needs, which will not be described in detail here.

[0106] Further integration Figure 5 and Figure 6As shown, in one embodiment, the lifting platform 12 includes a connector 121, a driven member 122, a guide member 123, and a support member 124. The driven member 122 is driven by a reduction gear assembly 132 for being driven to move along the lifting direction G. The connector 121 is integrally connected to the driven member 122, and the guide member 123 is integrally connected to the connector 121. The guide member 123 is also slidably engaged with the frame 11 along the lifting direction G. The support member 124 is disposed along the lifting direction G on the side of the connector 121 opposite to the driven member 122.

[0107] In this embodiment, the connector 121 is generally plate-shaped with its length direction corresponding to the second direction Y, its width direction corresponding to the first direction X, and its thickness direction corresponding to the third direction Z. The driven member 122 and the guide member 123 are located on the side of the connector 121 facing the upper support 114 along the third direction Z. The support member 124 is located on the side of the connector 121 away from the frame 11 along the third direction Z, so as to support the shaft 2.

[0108] In this embodiment, two guide members 123 are spaced apart at both ends of the connector 121 along a first direction X. The frame 11 is located between the two guide members 123 along the first direction X. A driven member 122 is located between the two guide members 123 along the first direction X, and the driven member 122 is configured to pass through the upper support 114 and the middle support 113 along a third direction Z. The driven member 122 includes a first support frame 1221 and a rack 1222. The first support frame 1221 is connected to the connector 121, and the rack 1222 is connected to the first support frame 1221 and extends substantially along the third direction Z. The guide member 123 includes a second support frame 1231 and a guide rail 1232. The second support frame 1231 is connected to the connector 121, and the guide rail 1232 is connected to the second support frame 1231 and extends substantially along the third direction Z. The guide rail 1232 is used for sliding engagement with the slider 117, for example, sliding engagement along the third direction Z.

[0109] In one embodiment, the support member 124 has a support groove 1240, which has an opening on one side along the lifting direction G, so that the support member 124 can support the shaft 2 with a curved surface.

[0110] In this embodiment, the support groove 1240 is roughly "V" shaped. The larger opening of the "V" shaped support groove 1240 faces upward along the third direction Z (away from the upper bracket 114) to correspond to the shaft 2. The inner diameter of the "V" shaped support groove 1240 gradually decreases along the third direction Z (closer to the upper bracket 114) to allow the shaft 2 to be fixed.

[0111] In this embodiment, there are multiple support members 124, which are spaced apart along the first direction X to support different positions of the shaft 2, making the support more stable.

[0112] It is understood that in this embodiment, the lifting direction G coincides with the third direction Z as an example, that is, the lifting direction G can roughly correspond to the direction of gravity. In other embodiments, the lifting direction G can also be other feasible directions, which will not be elaborated here.

[0113] Further integration Figure 7 and Figure 8 As shown, in one embodiment, the drive assembly 13 includes a reduction gear assembly 132, a backstop assembly 133, a drive input component 134, and a housing 131. The housing 131 includes a bottom plate 1315, a first side plate 1311, a second side plate 1312, a third side plate 1313, a fourth side plate 1314, and a top plate 1316. These components are joined together to form a hollow box for housing the reduction gear assembly 132. The backstop assembly 133 and the drive input component 134 pass through the housing 131 and are connected to the reduction gear assembly 132, respectively, so that at least a portion of each is exposed for adjustment.

[0114] In this embodiment, the base plate 1315 is used to connect with the central support 113. The first side plate 1311, the second side plate 1312, the third side plate 1313, and the fourth side plate 1314 are arranged around the base plate 1315 and are respectively connected to the base plate 1315. The top plate 1316 is arranged at intervals with the base plate 1315 along the third direction Z and is connected to the first side plate 1311, the second side plate 1312, the third side plate 1313, and the fourth side plate 1314. The top plate 1316 is used to connect with the anti-reverse assembly 133. The first side plate 1311 and the second side plate 1312 are arranged at intervals along the second direction Y, and the third side plate 1313 and the fourth side plate 1314 are arranged at intervals along the first direction X. The first side plate 1311 and the second side plate 1312 are used to fix the deceleration assembly 132. The third side plate 1313 has a through hole to allow the deceleration assembly 132 to extend to connect with the driven member 122.

[0115] Further integration Figure 8 and Figure 9 As shown, in one embodiment, the deceleration assembly 132 includes a plurality of large gears 1324, a plurality of small gears 1325, and a plurality of rotating shafts 1320 connecting at least one large gear 1324 and / or at least one small gear 1325. A drive input 134 is drivenly connected to a small gear 1325, a lifting platform 12 is drivenly connected to a large gear 1324, and a backstop assembly 133 is connected to a rotating shaft 1320.

[0116] In this embodiment, the rotating shaft 1320 includes a first sub-shaft 1321, a second sub-shaft 1322, and a third sub-shaft 1323. The drive input component 134, a small gear 1325, and the ratchet 1331 of the anti-reverse assembly 133 are respectively connected to the first sub-shaft 1321 and can rotate as a whole; a large gear 1324 and another small gear 1325 are respectively connected to the second sub-shaft 1322 and can rotate as a whole; another large gear 1324 is connected to the third sub-shaft 1323 and can rotate as a whole. The pinion 1325 on the first sub-shaft 1321 meshes with the large gear 1324 on the second sub-shaft 1322. The pinion 1325 on the second sub-shaft 1322 meshes with the large gear 1324 on the third sub-shaft 1323. The large gear 1324 on the third sub-shaft 1323 extends through a through hole to mesh with the driven member 122. Specifically, it can mesh with the rack 1222 to drive the rack 1222 to move in the third direction Z.

[0117] In this embodiment, the drive input 134 is a rotatable handle 118. The operator drives the first sub-shaft 1321 to rotate by rotating the handle 118. The first sub-shaft 1321 can synchronously drive the ratchet 1331 and a small gear 1325 to rotate, and further mesh with the large gear 1324, the small gear 1325 and the rotating shaft 1320 in stages to drive the driven component 122.

[0118] Understandably, the combined diameter of the large gear 1324 and the small gear 1325 is larger. This embodiment demonstrates a two-stage reduction as an example. Two-stage reduction can achieve a reduction ratio of 1:10 or higher, thus making it easier to lift or move the shaft 2. In other embodiments, the quantity and / or dimensions of the large gear 1324, small gear 1325, and rotating shaft 1320 can be adjusted according to actual reduction requirements to obtain different reduction ratios. Those skilled in the art will understand that this is achievable, and will not be elaborated upon here.

[0119] Further integration Figures 8 to 11 As shown, in one embodiment, the anti-reverse assembly 133 includes a ratchet 1331 and a pawl 1332. The ratchet 1331 is configured to be connected to the deceleration assembly 132 and be able to rotate integrally, and the pawl 1332 is configured to engage with the ratchet 1331 in one direction, allowing the ratchet 1331 to rotate in one direction and stopping rotation in the corresponding opposite direction.

[0120] Understandably, the ratchet 1331 is connected to the reduction gear 132 and can drive as a single unit. The pawl 1332 provides unidirectional limiting for the ratchet 1331, allowing it to rotate in one direction and stopping rotation in the opposite direction. This prevents the reduction gear 132 from reversing due to the shaft 2 pressing against the lifting frame, thus preventing the reduction gear 132 from causing the drive input 134 to reverse and potentially injuring the operator.

[0121] In one embodiment, the outer periphery of the ratchet 1331 is provided with a plurality of mutually spaced protrusions 13311, and a recessed portion 13312 is provided between any two adjacent protrusions 13311. The pawl 1332 includes a stop end 13321 with a slope 13322 on one side. The stop end 13321 is configured to extend into a recess 13312 and can be tightly engaged with the slope 13322 via the protrusion 13311 and withdraw from the recess 13312.

[0122] In this embodiment, the anti-reverse end 13321 has a bevel 13322 on one side and no bevel 13322 on the other side. When the ratchet 1331 rotates in the correct direction, the protrusion 13311 abuts against the bevel 13322, allowing the pawl 1332 to exit the recess 13312 under the guidance of the bevel 13322, thereby avoiding the protrusion 13311 and allowing the ratchet 1331 to rotate. When the ratchet 1331 rotates in the wrong direction, the anti-reverse end 13321 cannot be guided out of the recess 13312, causing the ratchet 1331 to be stopped by the pawl 1332 and unable to rotate, thus achieving anti-reverse protection.

[0123] In one embodiment, the anti-reverse assembly 133 further includes an elastic element 1334 and a mounting base 1333. The two ends of the elastic element 1334 are respectively connected to the mounting base 1333 and the pawl 1332, for driving the pawl 1332 to abut against the side where the ratchet 1331 is located.

[0124] Understandably, the mounting base 1333 is used to connect the elastic element 1334 and the pawl 1332. The mounting base 1333 is also connected to the housing 131 of the reduction assembly 132, providing support for the pawl 1332 and the elastic element 1334. The elastic element 1334 drives the pawl 1332 to abut against the side where the ratchet 1331 is located, so that the anti-reverse end 13321 of the pawl 1332 always has a tendency to protrude towards the side where the ratchet 1331 is located and extend into the recess 13312, thereby continuously achieving anti-reverse during the rotation of the ratchet 1331.

[0125] In one embodiment, the anti-reverse assembly 133 further includes a direction adjustment member 1335, which is configured to connect with the pawl 1332 and be able to rotate integrally. The direction adjustment member 1335 has a locking protrusion 13352, and the mounting base 1333 has at least two spaced slots 13332, with the locking protrusion 13352 located in one of the two slots 13332.

[0126] In one embodiment, the mounting base 1333 has a through hole 13331, and the through hole 13331 and the slot 13332 extend along the telescopic direction F. At least two slots 13332 are spaced apart on different sides of the through hole 13331, and the protrusion 13352 extends movably into the slot 13332 along the telescopic direction F. The pawl 1332 is movably disposed in the through hole 13331 along the telescopic direction F, and the elastic element 1334 is clamped between the mounting base 1333 and the pawl 1332 along the telescopic direction F.

[0127] In this embodiment, the pawl 1332 further includes a rod 13323, which is connected to the anti-reverse end 13321 and extends along the telescopic direction F. A through hole 13331 extends through the mounting base 1333 along the telescopic direction F. The rod 13323 extends into the through hole 13331 through one side opening, and the anti-reverse end 13321 extends out of the through hole 13331 through the other side opening. The elastic element 1334 is a compression spring, which is sleeved around the rod 13323 and follows the rod 13323 into the through hole 13331. Both ends of the elastic element 1334 abut against the inner wall of the through hole 13331 and the outer wall of the anti-reverse end 13321, respectively, to push the anti-reverse end 13321 out. In other embodiments, the elastic element 1334 may also be a tension spring or an elastic rubber rod, etc., which will not be elaborated here.

[0128] In this embodiment, the direction adjustment member 1335 is used to connect the other end of the rod portion 13323 away from the anti-reverse end 13321. The locking protrusion 13352 is provided on the edge of the direction adjustment member 1335 to correspond to the locking groove 13332. By pulling the direction adjustment member 1335, the pawl 1332 can be pulled, and the locking protrusion 13352 will be disengaged from the locking groove 13332. At this time, the direction adjustment member 1335 is rotated to drive the pawl 1332 to rotate, so that the direction of the inclined surface 13322 of the anti-reverse end 13321 changes, and the locking protrusion 13352 moves to correspond to the other locking groove 13332. When the direction adjustment member 1335 is released, the locking protrusion 13352 is pushed into the locking groove 13332 by the elastic member 1334 to complete the positioning, so as to prevent the direction adjustment member 1335 and the pawl 1332 from rotating spontaneously.

[0129] In this embodiment, the top surface of the direction adjustment member 1335 may also be provided with an indicator arrow 13351, which points to the location of the latch protrusion 13352. The latch protrusion 13352 is located in the same direction as the ratchet 1331 that is allowed to rotate at the anti-reverse end 13321, and is used for indication.

[0130] In other embodiments, the number of the protrusions 13352 and the slots 13332 can be different, and the structure of the anti-reverse end 13321 (e.g., the inclination angle of the inclined surface 13322 and / or the number of inclined surfaces 13322) can be adjusted according to the actual anti-reverse requirements. Those skilled in the art will understand that this is certainly achievable, and will not be elaborated here.

[0131] In this embodiment, the example is shown where the telescopic direction F coincides with the third direction Z. In other embodiments, the telescopic direction F can also be other directions. Those skilled in the art will understand that this is certainly possible, and will not be elaborated here.

[0132] The specific embodiments of this application have been described above with reference to the accompanying drawings. However, those skilled in the art will understand that various changes and substitutions can be made to the specific embodiments of this application without departing from the spirit and scope of this application. All such changes and substitutions fall within the scope defined by this application.

Claims

1. A shaft replacement auxiliary device, characterized in that, include: frame; A lifting platform, which is movably connected to the frame; A drive kit, which is connected to the lifting platform drive, is used to drive the lifting platform to move relative to the frame; The drive kit includes a deceleration component, a backstop component, and a drive input component. The drive input component is drivenly connected to the deceleration component, the deceleration component is drivenly connected to the lifting platform, and the backstop component is drivenly connected to the deceleration component, allowing the deceleration component to drive in at least one direction and blocking the corresponding reverse direction of transmission.

2. The shaft replacement auxiliary device as described in claim 1, characterized in that, The anti-reverse assembly includes a ratchet and a pawl. The ratchet is configured to connect to the deceleration assembly and rotate integrally with it. The pawl is configured to engage with the ratchet in one direction, allowing the ratchet to rotate in one direction and preventing the ratchet from rotating in the corresponding opposite direction.

3. The shaft replacement auxiliary device as described in claim 2, characterized in that, The ratchet has a plurality of spaced protrusions on its outer periphery, and a recessed portion is provided between any two adjacent protrusions. The pawl includes a stop end with a bevel on one side. The stop end is configured to extend into one of the recesses and can be withdrawn from the recess by abutting against the protrusion and the bevel.

4. The shaft replacement auxiliary device as described in claim 2, characterized in that, The anti-reverse assembly also includes an elastic element and a mounting base. The two ends of the elastic element are respectively connected to the mounting base and the pawl, and are used to drive the pawl to abut against the side where the ratchet is located.

5. The shaft replacement auxiliary device as described in claim 4, characterized in that, The anti-reverse assembly also includes a direction adjustment component, which is configured to connect with the pawl and be able to rotate integrally. The direction adjustment component has a locking protrusion, and the mounting base has at least two spaced slots. The locking protrusion is located in one of the two slots.

6. The shaft replacement auxiliary device as described in claim 5, characterized in that, The mounting base has a through hole, and the through hole and the slot extend along a telescopic direction. At least two slots are spaced apart on different sides of the through hole. The protrusion extends movably into the slot along the telescopic direction. The pawl is movably disposed in the through hole along the telescopic direction. The elastic element is clamped between the mounting base and the pawl along the telescopic direction.

7. The shaft replacement auxiliary device as described in claim 1, characterized in that, The deceleration assembly includes several large gears, several small gears, and several rotating shafts. The rotating shafts are connected to at least one of the large gears and / or at least one of the small gears. The drive input component is driven and connected to one of the small gears. The lifting platform is driven and connected to one of the large gears. The anti-reverse assembly is connected to one of the rotating shafts.

8. The shaft replacement auxiliary device as described in claim 1, characterized in that, The deceleration assembly is fixed to the frame, the deceleration assembly engages with the lifting platform, and the lifting platform slides with the frame.

9. The shaft replacement auxiliary device as described in claim 1, characterized in that, The lifting platform includes a driven component, a connecting component, a guide component, and a supporting component. The driven component is driven by the reduction gear assembly for moving in a lifting direction. The connecting component is connected to the driven component. The guide component is connected to the connecting component. The guide component and the frame are slidably engaged in the lifting direction. The supporting component is located on the side of the connecting component away from the driven component along the lifting direction.

10. The shaft replacement auxiliary device as described in claim 9, characterized in that, The support member has a support groove with an opening along the lifting direction, which enables the support member to support a shaft with a curved surface.

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