Limiter connection structure, lifting mechanism and lifting equipment

Abstract

The present invention relates to the technical field of lifting equipment, and provides a connection structure of a limiter, a lifting mechanism and a lifting equipment. The connection structure of the limiter is used to connect a rotating shaft and a limiter, and the connection structure of the limiter includes: a connecting rod, one end of which is connected to the limiter; a connector, which is arranged at the other end of the connecting rod, and the cross-sectional area of ​​the connector is larger than the cross-sectional area of ​​the connecting rod. The connector is plugged into the rotating shaft so that the rotating shaft and the connecting rod rotate synchronously. The connection structure of the limiter and the lifting equipment directly connect the limiter and the rotating shaft through the connecting rod, which can effectively save installation space and material costs. In addition, due to the streamlined structure, the installation difficulty is also reduced, the possibility of the rotating shaft and the connecting rod being coaxial is increased, and the reliability of the use of the limiter and the lifting equipment is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of engineering machinery, and in particular to a connection structure of a limiter, a lifting mechanism and a lifting device. Background Art

[0002] In the related prior art, the winch is a lifting equipment, and the limiter is mainly used to record the number of rotations of the drum to prevent the hook from hitting the top due to excessive lifting, and is an important safety component.

[0003] At present, the limiter is usually connected to the reel shaft to determine the rotation of the motor. Since the installation space for connecting the limiter to the shaft is small and the torque on the limiter is small, the commonly used connection method generally uses a cross slider coupling to flexibly connect the limiter to the shaft coaxially, or installs an eccentric rod through the eccentric hole set on the reel shaft to connect it with the open coupler of the limiter.

[0004] In the above connection methods, it is not easy to align the limiter and the rotating shaft during installation, and it is difficult to replace and maintain. During use, radial loads are often generated due to installation of different shaft centers, resulting in broken shafts or pins of the limiter, affecting the reliability and safety of the connection between the limiter and the rotating shaft. Summary of the invention

[0005] In view of this, the first aspect of the present invention aims to provide a connection structure of a limiter to solve or improve the technical problem in the background technology that the connection between the limiter and the rotating shaft becomes eccentric during use, thus affecting the reliability and safety of the limiter.

[0006] The present invention provides a connection structure of a limiter, which is used to connect a rotating shaft and a limiter. The connection structure of the limiter includes: a connecting rod, one end of which is connected to the limiter; and a connecting head, which is arranged at the other end of the connecting rod, the cross-sectional area of ​​the connecting head is larger than the cross-sectional area of ​​the connecting rod, and the connecting head is plugged into the rotating shaft so that the rotating shaft and the connecting rod rotate synchronously.

[0007] The connection structure of the limiter provided by the present invention is directly connected to the rotating shaft by connecting the connecting rod of the limiter. Compared with the structural form of coupling connection, it can effectively save installation space and material cost. In addition, due to the simplified structure, it also reduces the difficulty of installation and reduces the possibility of different axes caused by the installation of the coupling. At the same time, since the coupling is a wearing part in the connection structure, the cancellation of the coupling increases the reliability of the structure to a certain extent. The cross-sectional area of ​​the connector is larger than the cross-sectional area of ​​the connecting rod, which ensures the structural strength of the plug-in connection between the connector and the rotating shaft.

[0008] Optionally, the connection structure of the limiter also includes: a plurality of fasteners, respectively provided on the connecting head to connect the connecting head and the rotating shaft; wherein the end face of the rotating shaft has a groove, the connecting head is located in the groove, and the connecting head has a mating surface that cooperates with the bottom of the groove.

[0009] Optionally, the limiter connection structure further includes: a radial adjustment mechanism, which is provided on the connecting head and the rotating shaft, and the radial adjustment mechanism is configured to adjust the connecting rod and the rotating shaft to remain coaxial.

[0010] Optionally, the radial adjustment mechanism includes: an elastic member; wherein, a plurality of positioning holes are provided in the connecting head, each of the positioning holes is configured to pass a fastener so that the fastener is connected to the rotating shaft, and an elastic member is correspondingly arranged for each of the positioning holes, and the elastic member is respectively connected to the fastener and the connecting head.

[0011] Optionally, there is a gap between the fastener and the positioning hole.

[0012] Optionally, the fastener includes: a screw having an external thread at one end; and a nut, which is arranged at the other end of the screw, and the inner side surface of the nut is a plane; wherein the positioning hole is a step hole, the elastic member is sleeved on the screw in the positioning hole, and one end of the elastic member is connected to the step of the step hole, and the other end of the elastic member is abutted against the inner side surface of the nut.

[0013] Optionally, the radial adjustment mechanism further includes: a wear-resistant pad, which is arranged on the step of the step hole, and the elastic member abuts against the wear-resistant pad.

[0014] Optionally, the connecting rod includes: a first rod body, one end of which is connected to the limiter; a first connector, which is arranged at the other end of the first rod body; a second rod body, one end of which is provided with the connecting head; and a second connector, which is arranged at the other end of the second rod body; wherein the second connector is plugged into the first connector.

[0015] Optionally, the end face of the first connector has a cross groove, and the end face of the second connector has a cross protrusion; or the end face of the first connector has a cross protrusion, and the end face of the second connector has a cross groove; wherein the first connector and the second connector are plugged into each other via the cross protrusion and the cross groove.

[0016] The present invention provides a lifting mechanism, which includes: a drum having a drum shaft, the drum shaft having a center hole coaxially arranged; a rotating shaft passing through the center hole and connected to the drum shaft, the part of the rotating shaft extending out of the center hole being rotatably connected to a mounting seat; and a limiter; the connection structure of the limiter described above, the limiter connection structure being constructed to connect the limiter and the rotating shaft.

[0017] The lifting mechanism provided by the present invention includes the connection structure of the limiter described above, and thus has the technical effects of any of the connection structures of the limiters described above, which will not be described in detail here.

[0018] Optionally, the connection structure of the limiter also includes: a base plate, one end of which is detachably connected to the mounting seat, and the other end of the base plate is detachably connected to the limiter; a height adjustment mechanism, including at least one gasket; wherein the base plate has a first card slot, the bottom of the limiter has a second card slot, and the second card slot is opposite to the first card slot to enclose a accommodating space, and at least one gasket is arranged in the accommodating space.

[0019] The present invention also provides a lifting device, which comprises: the lifting mechanism described above.

[0020] The lifting equipment provided by the present invention includes the connection structure of the limiter described above, and thus has the technical effects of any of the connection structures of the limiters described above, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Shown is a partial cross-sectional structural schematic diagram of a connection structure of a limiter provided in some implementations of the present invention.

[0022] Figure 2 Shown Figure 1 Schematic diagram of the enlarged structural formula at A in the middle.

[0023] Figure 3 Shown Figure 1 Schematic diagram of the enlarged structural formula at B in the middle.

[0024] Figure 4 Shown is a partial cross-sectional structural schematic diagram of the connection structure of the limiter provided in some other implementations of the present invention.

[0025] Figure 5 Shown Figure 4 Schematic diagram of the enlarged structural formula at C in the middle.

[0026] Figure 6 Shown is a cross-sectional structural schematic diagram of a connection method for a connecting rod of a connection structure of a limiter provided in some implementations of the present invention.

[0027] Figure 7 Shown is a partial cross-sectional structural schematic diagram of a lifting mechanism provided by some implementations of the present invention. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. SUMMARY OF THE INVENTION

[0030] In order to solve the technical problem that the connection between the stopper and the rotating shaft is eccentric during use, which affects the reliability and safety of the stopper, a specific coupling can be used to connect the rotating shaft and the connecting rod of the stopper. However, this will result in high costs and inconvenience in installation.

[0031] In view of the above-mentioned technical problems, the basic concept of the present invention is to propose a connection structure of a limiter and a lifting equipment. The connection structure of the limiter is divided into three layers: the first layer is used for plugging the connecting rod and the rotating shaft. By setting a connecting head at the end of the connecting rod, the connecting head is extended into the rotating shaft to ensure the strength of the connection structure between the connecting rod and the rotating shaft; the second layer is used to radially adjust the connecting rod so that the connecting rod and the rotating shaft always keep the same axis and rotate synchronously during use, so as to ensure the reliability and safety of the limiter, and also the reliability and safety of the lifting equipment. Since the radial adjustment structure connects the rotating shaft and the connecting head, when the connecting rod is radially displaced, the connecting rod is reset by the radial adjustment structure, thereby ensuring that the rotating shaft and the connecting rod always rotate coaxially.

[0032] It should be noted that the connection structure of the limiter provided by the present invention can be applied to lifting equipment in any scenario. Specifically, the design purpose of the mechanical structure is to complete a specific work task, and the way to complete the work task is to complete a specific mechanical action or information transmission through the corresponding mechanical structure or part or all of the components in the mechanical structure.

[0033] After introducing the basic principles of the present invention, various non-limiting embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0034] Exemplary stopper connection structure

[0035] Figure 1 The figure shows a partial cross-sectional structural diagram of the connection structure of the limiter provided in some implementations of the present invention. Figure 1As shown, the connection structure 100 of the limiter is used to connect the rotating shaft 200 and the limiter 300 , and the connection structure 100 of the limiter includes: a connecting rod 110 and a connecting head 120 .

[0036] Specifically, one end of the connecting rod 110 is connected to the limiter 300. The limiter 300 is a structural form that combines a travel switch with a convex-concave pull rod structure, which has a simple structure and sensitive action. The travel switch can be fixed in a semi-enclosed housing made of a thin steel plate by bolts. Two slide seats are welded to the bottom of the housing, and the convex-concave pull rod can move left and right along the slide in the slide seat. A small hole is drilled at one end of the convex-concave pull rod, which can be used to connect with one end of the connecting rod 110. The connector 120 is provided at the other end of the connecting rod 110, wherein the connector 120 can be integrally formed with the connecting rod 110 or can be split. The cross-sectional area of ​​the connector 120 is larger than the cross-sectional area of ​​the connecting rod 110, and the connector 120 is plugged into the rotating shaft 200, so that the rotating shaft 200 and the connecting rod 110 rotate synchronously. The cross-sectional areas of the rotating shaft 200, the cross-sectional areas of the connector 120, and the cross-sectional areas of the connecting rod 110 decrease in sequence, thereby reducing the stress concentration generated by the connecting rod 110 during the synchronous rotation with the rotating shaft 200, thereby ensuring the structural strength of the connecting rod 110 and improving the reliability of the stopper 300.

[0037] Directly connecting with the rotating shaft 200 can ensure that the connecting rod 110 rotates coaxially with the rotating shaft 200 , and enable the connecting rod 110 to transmit the rotation signal to the limiter 300 .

[0038] The connection structure 100 of the limiter is directly connected to the rotating shaft 200 through the connecting rod 110 connected to the limiter 300. Compared with the structural form of coupling connection, it can effectively save installation space and material costs. In addition, due to the simplified structure, it also reduces the difficulty of installation and reduces the possibility of different axes caused by the installation of the coupling. At the same time, since the coupling is a consumable part in the connection structure, the cancellation of the coupling increases the reliability of the structure to a certain extent. The cross-sectional area of ​​the connector 120 is larger than the cross-sectional area of ​​the connecting rod 110, which ensures the structural strength of the plug-in connection between the connector 120 and the rotating shaft 200.

[0039] Figure 2 Shown Figure 1 The enlarged structural diagram at A in the figure. Figure 2As shown, in a possible implementation, the connection structure 100 of the limiter also includes: a plurality of fasteners 130, such as screws. The fastener 130 includes a screw and a nut, the nut is arranged at one end of the screw, and the screw has an external thread. The plurality of fasteners 130 are respectively arranged on the connector 120 to connect the connector 120 with the rotating shaft 200, wherein the end face of the rotating shaft 200 has a groove 210, the connector 120 is located in the groove 210, and the groove 210 covers the connector 120, which plays a role in further stabilizing the structure. The shape of the cross section of the groove 210 can be circular, rectangular, etc., and the shape of the cross section of the connector 120 is adapted to the shape of the cross section of the groove 210. And the connector 120 has a mating surface that cooperates with the groove bottom of the groove 210, so that the connector 120 can press the groove bottom of the groove 210, ensuring the structural strength and reliability of the connection between the connector 120 and the rotating shaft 200.

[0040] Continue to combine Figure 2 As shown, in a possible implementation, the connection structure 100 of the limiter also includes: a radial adjustment mechanism 140, which is arranged on the connecting head 120 and the rotating shaft 200. The radial adjustment mechanism 140 is constructed to adjust the connecting rod 110 and the rotating shaft 200 to remain coaxial, which can realize self-alignment of the connecting rod 110 and prevent the connecting rod 110 and the connecting head 120 from carrying excessive radial loads.

[0041] Continue to combine Figure 2 As shown, in a possible implementation, the radial adjustment mechanism 140 includes: an elastic member 141. The elastic member 141 can be a spring. A plurality of positioning holes 121 are provided in the connector 120. It can be understood that the positioning holes 121 are arranged along the axial direction of the rotating shaft 200. The plurality of positioning holes 121 can be arranged circumferentially and evenly distributed. Each positioning hole 121 is constructed to pass a fastener 130. The plurality of fasteners 130 are evenly distributed on the connector 120, so that the plurality of fasteners 130 are respectively connected to the rotating shaft 200 and are evenly stressed. An elastic member 141 is provided corresponding to each positioning hole 121, and the elastic member 141 is respectively connected to the fastener 130 and the connector 120, so as to be able to adjust the radial displacement of the connector 120.

[0042] Continue to combine Figure 2As shown, there is a gap 145 between the fastener 130 and the positioning hole 121. It can be understood that the positioning hole 121 is a through hole provided in the connector 120. When the positioning hole 121 is a stepped hole, the aperture of the portion of the positioning hole 121 close to the rotating shaft 200 is smaller than the aperture of the portion of the positioning hole 121 close to the connecting rod 110. The minimum gap between the fastener 130 and the positioning hole 121 is larger than the diameter of the screw rod. The spring is sleeved on the outside of the screw rod, and the inner diameter of the spring is larger than the minimum inner diameter of the positioning hole 121, so that the spring can abut against the step of the stepped hole, and the step can be used to bear the compression force of the spring.

[0043] Continue to combine Figure 2 As shown, in a possible implementation, the fastener 130 includes: a screw and a nut, one end of the screw has an external thread, so that the screw passes through the positioning hole 121 and is threadedly connected to the rotating shaft 200. The nut is arranged at the other end of the screw, and the inner side surface of the nut is a plane, which is conducive to the reset of the connector 120 under the action of the elastic member 141 after radial displacement occurs, wherein the positioning hole 121 is a step hole, and the elastic member 141 is sleeved on the screw in the positioning hole 121. It can be understood that a part of the screw close to the nut can be a bare rod, and there is a certain distance between the external thread and the nut, so as to facilitate the sleeve of the elastic member 141. And one end of the elastic member 141 is connected to the step of the step hole, and the other end of the elastic member 141 is in contact with the nut, so as to facilitate the installation and positioning of the elastic member 141.

[0044] Continue to combine Figure 2 As shown, in a possible implementation, the radial adjustment mechanism 140 further includes: a wear-resistant pad 143, which is disposed on the step of the step hole, and the elastic member 141 abuts against the wear-resistant pad 143, which can be used to prevent the elastic member 141 from being worn when the connecting rod 110 moves radially.

[0045] Continue to combine Figure 2 In a possible implementation, the groove bottom of the groove 210 has a slope 220. Specifically, the slope 220 is set at the edge of the groove bottom of the groove 210 and can be set by chamfering the groove bottom. Correspondingly, both sides of the side of the connector 120 that is used to contact the groove bottom also have slopes 220. The slope 220 is also a taper, which can make it easier for the connector 120 to align with the groove bottom of the groove 210. The setting of the slope 220 can also ensure that the connecting rod 110 can maintain a tight connection with the rotating shaft 200 under the action of the radial adjustment mechanism 140 when the connector 120 is subjected to a small radial force.

[0046] Figure 4 The figure shows a partial cross-sectional view of the connection structure of the stopper provided by some other implementations of the present invention. Figure 4As shown, in a possible implementation, the connecting rod 110 includes: a first rod body 111 , a first connector 113 , a second rod body 115 and a second connector 117 .

[0047] Specifically, one end of the first rod body 111 is connected to the stopper 300, and is used to send the rotation signal of the first rod body to the stopper 300. The first connector 113 is provided at the other end of the first rod body 111, and the connector 120 is provided at one end of the second rod body 115, and the second connector 117 is provided at the other end of the second rod body 115. It can be understood that the first connector 113 and the second connector 117 are block structures respectively. The first connector 113 is opposite to the second connector 117, wherein the second connector 117 and the first connector 113 are plugged into each other, for example, the second connector 117 and the first connector 113 are plugged into each other in a concave-convex matching manner, and the connection structure is more stable, which can limit the axial deviation of the rotating shaft 200 and the connecting rod 110.

[0048] Figure 5 Shown Figure 4 The enlarged structural diagram at C in the figure. Figure 5 As shown, in a possible implementation, the end surface of the first connector 113 has a cross groove 114, and the end surface of the second connector 117 has a cross protrusion 112, or the end surface of the first connector 113 has a cross protrusion 112, and the end surface of the second connector 117 has a cross groove 114, and the end surface of the second connector 117 has a cross groove 114 or a cross protrusion 112, so that the first connector 113 and the second connector 117 are plugged into each other through the cross protrusion 112 and the cross groove 114. It can be understood that when the end surface of the first connector 113 has a cross groove 114, the end surface of the second connector 117 has a cross protrusion 112, and when the end surface of the first connector 113 has a cross protrusion 112, the end surface of the second connector 117 has a cross groove 114. Figure 6 The figure shows a cross-sectional structural diagram of the connection method of the connecting rod 110 of the connection structure of the limiter provided in some implementations of the present invention. Figure 6 As shown, there is a matching gap 146 between the cross protrusion 112 and the cross groove 114. The first connector 113 and the second connector 117 are matched through the embedded gap between the cross groove 114 and the cross protrusion 112, which can roughly ensure the coaxiality of the first rod body 111 and the second rod body 115 from the installation angle, thereby limiting the axial deviation of the first rod body 111 and the second rod body 115 from the installation aspect to a certain extent.

[0049] Exemplary lifting mechanism

[0050] Figure 7 The figure shows a partial cross-sectional structural schematic diagram of a lifting device provided by some implementations of the present invention. Figure 7 As shown, the lifting mechanism 10 comprises: a drum, a rotating shaft 200, a stopper 300, a connection structure 100 of the stopper in any implementation mode, and a bracket 500, the bearing seat 171 of the mounting seat 170 is connected to the bracket 500, the drum has a drum shaft 400, the drum shaft 400 has a center hole arranged coaxially, the rotating shaft 200 passes through the center hole, and the rotating shaft 200 is connected to the drum shaft 400, and the part of the rotating shaft extending out of the center hole is rotatably connected to the mounting seat 170. The stopper connection structure 100 is configured to connect the stopper 300 and the rotating shaft 200.

[0051] The lifting mechanism 10 in the present invention includes the connection structure 100 of the limiter in any of the above-mentioned implementation modes, and thus has the technical effects of the connection structure 100 of the limiter in any of the above-mentioned implementation modes, which will not be described in detail here.

[0052] Continue to combine Figure 4 As shown, in a possible implementation, the rotating shaft 200 is rotatably connected to the mounting seat 170, and the mounting seat 170 includes a bearing seat 171, a bearing 173 and an end cover 175. The bearing 173 is installed in the bearing seat 171, and the inner ring of the bearing 173 is connected to the rotating shaft 200, so that the rotating shaft 200 can rotate. The end cover 175 is connected to the bearing seat 171 by screws, and the center of the end cover 175 has a center hole, so that the rotating shaft 200 can pass through the end cover 175. Figure 1 As shown, the connection structure of the stopper also includes: a bottom plate 150 and a height adjustment mechanism 160, one end of the bottom plate 150 is detachably connected to the mounting seat 170, and the other end of the bottom plate 150 is detachably connected to the stopper 300. It can be understood that one end of the bottom plate 150 is connected to the end cover 175 of the mounting seat 170, and the connection is more convenient. The height adjustment mechanism 160 is connected to the bottom plate 150 and the stopper 300 respectively, and the height adjustment mechanism 160 is configured to adjust the height of the stopper 300 so as to be able to adjust the vertical height of the stopper 300.

[0053] Figure 3 Shown Figure 1 The enlarged structural diagram at B in the figure. Figure 3As shown, the height adjustment mechanism 160 includes: at least one gasket 165, a first card slot 161 is provided on the bottom plate 150, a second card slot 163 is provided at the bottom of the stopper 300, and the second card slot 163 is opposite to the first card slot 161 to enclose a receiving space, at least one gasket 165 is arranged in the receiving space, and a plurality of gaskets 165 can be stacked in sequence in the height direction. Among them, the bottom plate 150 is detachably connected to the mounting seat 170 and the stopper 300, for example, the bottom plate 150 and the end cover 175 can be connected by screws, and the bottom plate 150 and the stopper 300 are also connected by screws, and a gap is left between the bottom plate 150 and the stopper 300, so as to facilitate the arrangement of one or more gaskets 165 in the receiving space. When the height of the stopper 300 needs to be adjusted, the size of the gap between the bottom plate 150 and the stopper 300 can be adjusted by adjusting the screws, so as to adapt to the thickness of the gasket 165.

[0054] In the present invention, Figure 1 As shown, the shaft 200 is fixed on the bearing seat 171 through the bearing 173, and the connecting rod 110 is coaxially connected to the shaft 200 through the fastener 130, and the fastener 130 is a screw. Among them, the connecting rod 110 has a connector 120, and the connecting surface of the connector 120 and the shaft 200 has a certain inclined taper, which is convenient for positioning and installation, and can also ensure that the connecting rod 110 can be tightly connected with the shaft 200 under the action of the spring under the condition of small radial force. There is a clearance fit between the screw and the positioning hole 121, so that there is a certain space for the connecting rod 110 to move radially around the screw. During installation, the spring and the screw are coaxially fixed on the nut of the screw. After the screw is tightened, the spring provides a pressing force for the connecting rod 110, and the connecting rod 110 is pressed on the shaft 200. Among them, a wear-resistant pad 143 is installed between the spring and the connecting rod 110, and the wear-resistant pad 143 is a flat washer 165, which can prevent the connecting rod 110 from wearing the spring when the radial displacement occurs. The other end of the connecting rod 110 is fixed on the limiter.

[0055] When the mechanism is installed, the stopper is installed on the bottom plate 150, and the bottom plate 150 is fixed to the end cover 175 of the bearing seat 171 by screws. There is an adjustment slot on the bottom plate 150, and the stopper 300 can be moved radially along the adjustment slot during installation. There is a shim slot on the bottom plate 150, that is, the second slot 163, and the vertical height of the stopper 300 can be adjusted by adding or subtracting shims 165 during installation.

[0056] When the mechanism is running, the rotating shaft 200 transmits the rotation signal to the limiter through the connecting rod 110. During the movement, when the connecting rod 110 is subjected to a large radial force, the connecting rod 110 can be radially displaced around the screw and automatically adjusted.

[0057] In another embodiment, if Figure 4As shown, when the mechanism is installed, the rotating shaft 200 is fixed on the bearing seat 171 through the bearing 173, and the connector 120 provided at the end of the second rod body 115 can be connected to the rotating shaft 200 coaxially through a screw, wherein the connection surface of the connector 120 and the rotating shaft 200 has a certain inclined taper, which is convenient for positioning and installation, and can also ensure that the second rod body 115 is tightly connected to the rotating shaft 200 under the action of the spring under the condition of small radial force. There is a clearance fit between the screw and the positioning hole 121, and there is a certain space for the second rod body 115 to move radially around the screw. During installation, the spring is fixed on the nut of the screw coaxially with the screw. After the screw is tightened, the spring provides a pressing force for the second rod body 115, pressing the second rod body 115 on the rotating shaft 200, wherein a flat gasket 165 is installed between the spring and the step of the positioning hole 121 to prevent the spring from being worn when the second rod body 115 is radially displaced. The other end of the second rod body 115 is fixed with a second connector 117.

[0058] When the mechanism is installed, the first connector 113 is fixed to one end of the first rod body 111, and the other end of the first rod body 111 is fixed to the stopper 300, which can rotate coaxially with the rotation of the first connector 113. The stopper 300 is installed on the bottom plate 150, and the bottom plate 150 is fixed to the end cover 175 of the bearing seat 171 by screws. Among them, the bottom plate 150 is provided with an adjustment groove, and the stopper 300 can be moved radially along the adjustment groove during installation. Among them, the bottom plate 150 is provided with a gasket groove, and the vertical height of the stopper 300 can be adjusted by adding or subtracting the heightening gasket 165 during installation.

[0059] When the mechanism is installed, the rotating shaft 200 and the stopper 300 are mainly connected through the first connector 113 and the second connector 117. The second connector 117 has a cross-shaped protrusion structure and is embedded with the first connector 113. The clearance fit can ensure the coaxiality of the connection from the perspective of installation, thereby reducing the axial deviation of the first rod body 111 and the second rod body 115 to a certain extent. After roughly adjusting the second connector 117 and the first connector 113, the connection is completed.

[0060] When the mechanism is running, the rotating shaft 200 transmits the rotation signal to the limiter 300 through the rotation of the second rod body 115 and the second connector 117, the first connector 113 and the first rod body 111. The fixing method of the second rod body 115 can be, but is not limited to, screws, and any method that can meet the fixation of the second rod body 115 and the installation space of the elastic member 141 is acceptable. During the movement, when the second rod body 115 is subjected to a large radial force, the second rod body 115 can automatically adjust the radial displacement around the screw. The structural form of the first connector 113 and the second connector 117 can be, but is not limited to, a cross-embedded connection method, and any structural form that can limit the coaxiality deviation from the installation angle is acceptable. The structure that provides the clamping force for the second rod body 115 can be, but is not limited to, a spring, and all materials and structures that meet certain elastic deformation and elastic force requirements are acceptable.

[0061] Exemplary lifting equipment

[0062] Continue to combine Figure 7 As shown, the lifting equipment includes: a lifting mechanism 10 in any implementation manner.

[0063] The lifting equipment in the present invention includes the connection structure 100 of the limiter in any of the above-mentioned implementation modes, and thus has the technical effects of the connection structure 100 of the limiter in any of the above-mentioned implementation modes, which will not be described in detail here.

[0064] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A connection structure of a stopper, used for connecting a rotating shaft (200) and a stopper (300), characterized in that: The connection structure (100) of the stopper comprises: A connecting rod (110), one end of which is connected to the stopper (300); and A connecting head (120) is provided at the other end of the connecting rod (110); the cross-sectional area of ​​the connecting head (120) is larger than the cross-sectional area of ​​the connecting rod (110); the connecting head (120) is plugged into the rotating shaft (200), so that the rotating shaft (200) and the connecting rod (110) rotate synchronously; The connection structure (100) of the stopper further comprises: A plurality of fasteners (130) are respectively disposed on the connecting head (120) to connect the connecting head (120) and the rotating shaft (200); The end surface of the rotating shaft (200) has a groove (210), the connecting head (120) is located in the groove (210), and the connecting head (120) has a matching surface that matches with the groove bottom of the groove (210); a radial adjustment mechanism (140) disposed on the connecting head (120) and the rotating shaft (200), the radial adjustment mechanism (140) being configured to adjust the connecting rod (110) and the rotating shaft (200) to remain coaxial; The radial adjustment mechanism (140) comprises: Elastic member (141); The connector (120) is provided with a plurality of positioning holes (121), each of the positioning holes (121) being configured to allow one of the fasteners (130) to pass through, so that the fastener (130) is connected to the rotating shaft (200), and each of the positioning holes (121) is provided with one of the elastic members (141) correspondingly. The elastic member (141) is connected to the fastener (130) and the connector (120) respectively; There is a gap (145) between the fastener (130) and the positioning hole (121); The fastener (130) comprises: A screw (131) having an external thread at one end; A nut (133) is arranged at the other end of the screw rod (131), and the inner side surface of the nut (133) is a plane; The positioning hole (121) is a stepped hole, the elastic member (141) is sleeved on the screw rod (131) in the positioning hole (121), one end of the elastic member (141) is connected to the step of the stepped hole, and the other end of the elastic member (141) is in contact with the inner side surface of the nut (133).

2. The connection structure of the limiter according to claim 1, characterized in that: The radial adjustment mechanism (140) further includes: The wear-resistant pad (143) is arranged on the step of the step hole, and the elastic member (141) abuts against the wear-resistant pad (143).

3. The connection structure of the limiter according to any one of claims 1 to 2, characterized in that: The connecting rod (110) comprises: A first rod body (111), one end of which is connected to the stopper (300); A first connector (113) is provided at the other end of the first rod body (111); A second rod body (115), one end of which is provided with the connecting head (120); and A second connector (117) is provided at the other end of the second rod (115); The second connector (117) and the first connector (113) are plugged into each other.

4. The connection structure of the limiter according to claim 3, characterized in that: The end surface of the first connector (113) has a cross groove (114), and the end surface of the second connector (117) has a cross protrusion (112); or The end surface of the first connector (113) has a cross protrusion (112), and the end surface of the second connector (117) has a cross groove (114); The first connector (113) and the second connector (117) are plugged into each other via the cross protrusion (112) and the cross groove (114).

5. A lifting mechanism, characterized in that: The lifting mechanism (10) comprises: A reel having a reel shaft (400), wherein the reel shaft (400) has a central hole arranged coaxially; A rotating shaft (200) passes through the central hole, and the rotating shaft (200) is connected to the reel shaft (400), and the portion of the rotating shaft (200) extending out of the central hole is rotatably connected to the mounting seat (170); a stopper (300); and The connection structure (100) of the limiter according to any one of claims 1 to 4, wherein the limiter connection structure (100) is configured to connect the limiter (300) and the rotating shaft (200).

6. The lifting mechanism according to claim 5, characterized in that: The connection structure (100) of the stopper further comprises: A bottom plate (150), one end of which is detachably connected to the mounting seat (170), and the other end of which is detachably connected to the stopper (300); A height adjustment mechanism (160) comprising at least one gasket (165); The bottom plate (150) has a first slot (161), the bottom of the stopper (300) has a second slot (163), and the second slot (163) is opposite to the first slot (161) to enclose a receiving space, and at least one gasket (165) is arranged in the receiving space.

7. A lifting device, characterized in that: The lifting equipment comprises: a lifting mechanism (10) as claimed in claim 5 or 6.

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