Transmission mechanism and transmission device

Abstract

The utility model provides a transmission mechanism and a transmission device. The transmission mechanism comprises a lead screw, a nut assembly and a supporting assembly. The screw rod is sleeved with the supporting assembly, and the supporting assembly is used for installing a first workpiece; the nut assembly is arranged on the lead screw in a sleeving mode, the nut assembly is used for being connected with a second workpiece and further used for being in transmission connection with a driving mechanism, and the nut assembly is driven by the driving mechanism to rotate so that the lead screw can move in the axial direction. The transmission mechanism can convert power output by the driving mechanism into power for controlling the lead screw to move in the axial direction through transmission of the nut assembly, so that the lead screw drives the supporting assembly to move, and the position of a first workpiece on the supporting assembly is adjusted; according to the transmission mechanism, when power is transferred from a rotating mode to a moving mode, the occupied space of the structure is reduced, the applicability of the transmission mechanism is enhanced, and the use requirement is met.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission mechanisms, in particular to a transmission mechanism and a transmission device. Background Art

[0002] Transmission mechanisms are structures used to transmit power and are used in a wide range of equipment. However, existing transmission mechanisms, when converting the motion of a power machine into the form required by a working machine—for example, converting power from rotation to movement—occupy a large amount of space, have poor applicability, and cannot meet practical requirements. Summary of the Invention

[0003] The utility model provides a transmission mechanism and a transmission device to solve the problems that the movable structure of the existing transmission mechanism needs to occupy a large space, has poor applicability and cannot meet usage requirements.

[0004] A transmission mechanism includes a screw rod, a nut assembly and a support assembly;

[0005] The support assembly is sleeved on the screw rod, and the support assembly is used to mount the first workpiece;

[0006] The nut assembly is sleeved on the screw rod, and the nut assembly is used to connect the second workpiece and is also used to be connected to the driving mechanism. The nut assembly rotates under the drive of the driving mechanism to move the screw rod along the axial direction.

[0007] Preferably, the transmission mechanism further comprises a fixing seat, which is sleeved outside the nut assembly and connected to the nut assembly, and the fixing seat is used to connect to the second workpiece.

[0008] Preferably, the nut assembly comprises a nut and a nut sleeve;

[0009] The nut is sleeved on the screw rod and is used to be connected to the driving mechanism and rotated under the drive mechanism to move the screw rod in the axial direction;

[0010] The nut sleeve is arranged outside the nut;

[0011] The fixing seat sleeve is arranged outside the nut sleeve and is connected to the nut sleeve.

[0012] Preferably, the transmission mechanism further comprises a bearing and an end cover;

[0013] The bearing is arranged between the nut assembly and the fixing seat;

[0014] An end cover is respectively provided at both ends of the fixing seat, and the end cover is connected to the nut assembly and the bearing.

[0015] Preferably, the transmission mechanism further comprises a round nut, which is sleeved on the nut assembly and connected to the end cover close to the support assembly.

[0016] Preferably, the support assembly includes a support seat and a cushion block; the support seat and the cushion block are spaced apart on the screw rod to form an installation gap for installing the first workpiece.

[0017] Preferably, the transmission mechanism further includes a tightening nut, which is arranged between the screw rod and the spacer and connected to the support seat.

[0018] A transmission device comprises a driving mechanism and the transmission mechanism;

[0019] The driving mechanism is connected to the nut assembly in the transmission mechanism and is used to drive the nut assembly to rotate.

[0020] Preferably, the driving mechanism includes a motor, a driving wheel, a driven wheel and a belt;

[0021] The driving wheel is connected to the output end of the motor, the driven wheel is coaxially and fixedly connected to the nut of the nut assembly, and the belt is sleeved on the driving wheel and the driven wheel.

[0022] Preferably, there are multiple driven wheels, multiple transmission mechanisms, and the multiple transmission mechanisms are arranged in parallel and spaced apart.

[0023] Each of the driven wheels is connected to a nut assembly in the transmission mechanism.

[0024] Preferably, the transmission device comprises two transmission mechanisms spaced apart, and each transmission mechanism is provided with a driven wheel;

[0025] The belt is sleeved on the driving wheel and the two driven wheels, and the driving wheel and the two driven wheels are in contact with the inner side of the belt;

[0026] The driving mechanism further includes two transition wheels, each of which is arranged between the driven wheel and the driving wheel, and the transition wheel is in contact with the outer side or the inner side of the belt.

[0027] Preferably, the transmission device further comprises a support plate, a limit frame and a fixing mechanism;

[0028] The motor is arranged on the first side surface of the support plate, and the output shaft of the motor passes through the support plate and is connected to the driving wheel;

[0029] The limiting frame is arranged on the second side surface of the support plate, and the limiting frame is provided with a movable space for the belt to pass through;

[0030] The fixing mechanism is connected to the limiting frame and is used to connect the third workpiece.

[0031] Preferably, the fixing mechanism includes a first fixing component and a second fixing component;

[0032] The first fixing component and the second fixing component are arranged on opposite sides of the limiting frame;

[0033] The first fixing assembly includes a first support and a transfer shaft, the first support is used to connect the third workpiece, the transfer shaft is arranged on the first support, and one end of the limit frame is rotatably connected to the transfer shaft;

[0034] The second fixing assembly includes a second support, a connecting shaft and an elastic member; the second support is connected to the limit frame; the connecting shaft is passed through the second support and is used to connect the third workpiece; the elastic member is sleeved on the connecting shaft and is located between the second support and the third workpiece.

[0035] The above-mentioned transmission mechanism includes a screw rod, a nut assembly and a support assembly; the support assembly is sleeved on the screw rod, and the first workpiece is installed on the support assembly; the nut assembly is sleeved on the screw rod, the nut assembly is connected to the second workpiece, and the nut assembly is connected to the driving mechanism, and a steel ball is provided in the nut assembly, and the steel ball is connected to the screw rod; driven by the driving mechanism, the nut assembly rotates, and the steel ball in the nut assembly can make the screw rod move in the axial direction, so that the power output by the driving mechanism is converted into power for controlling the movement of the screw rod in the axial direction through the nut assembly, so that the screw rod drives the support assembly to move, thereby adjusting the position of the first workpiece on the support assembly. The transmission mechanism is set in this way, which reduces the space occupied by the structure when realizing the conversion of power from rotation to movement, enhances the applicability of the transmission mechanism, and meets the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0037] Figure 1 This is an isometric view of a transmission mechanism in one embodiment of the present invention;

[0038] Figure 2 It is a cross-sectional view of a transmission mechanism in one embodiment of the present utility model;

[0039] Figure 3This is an exploded view of the transmission mechanism in one embodiment of the present utility model;

[0040] Figure 4 This is an isometric view of a transmission device in an embodiment of the present invention from a first viewing angle;

[0041] Figure 5 It is an isometric view of the transmission device in one embodiment of the present invention from a second viewing angle.

[0042] Among them, 1. screw rod; 2. nut assembly; 21. nut; 22. nut sleeve; 3. support assembly; 31. support seat; 32. pad; 4. driving mechanism; 41. motor; 42. driving wheel; 43. driven wheel; 44. belt; 45. transition wheel; 5. fixed seat; 6. bearing; 7. end cover; 8. round nut; 9. tightening nut; 10. support plate; 11. limit frame; 12. fixing mechanism; 121. first fixing assembly; 1211. first support; 1212. adapter shaft; 122. second fixing assembly; 1221. second support; 1222. connecting shaft; 1223. elastic member. DETAILED DESCRIPTION

[0043] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0044] In the description of the present invention, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0045] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0046] The present invention provides a transmission mechanism, referring to Figure 1 、 Figure 2 and Figure 3 The transmission mechanism includes a screw rod 1, a nut assembly 2 and a support assembly 3; the support assembly 3 is sleeved on the screw rod 1, and the support assembly 3 is used to install the first workpiece; the nut assembly 2 is sleeved on the screw rod 1, and the nut assembly 2 is used to connect the second workpiece, and is also used for transmission connection with the driving mechanism 4. The nut assembly 2 rotates under the drive of the driving mechanism 4 to make the screw rod 1 move along the axial direction.

[0047] As an example, the transmission mechanism includes a screw 1, a nut assembly 2 and a support assembly 3; when installed, the support assembly 3 is sleeved on the screw 1, and the first workpiece is installed on the support assembly 3; the nut assembly 2 is sleeved on the screw 1, the nut assembly 2 is connected to the second workpiece, and the nut assembly 2 is connected to the drive mechanism 4, wherein a steel ball is provided in the nut assembly 2 and the steel ball is connected to the screw 1; driven by the drive mechanism 4, the nut assembly 2 rotates, and the steel ball in the nut assembly 2 can make the screw 1 move in the axial direction. The transmission mechanism in this example can convert the power output by the drive mechanism 4 into power to control the movement of the screw 1 in the axial direction through the nut assembly 2, so that the screw 1 drives the support assembly 3 to move, thereby adjusting the position of the first workpiece on the support assembly 3. In this way, when the transmission mechanism is configured to convert the power from the rotation mode to the movement mode, the structure occupies less space, enhances the applicability of the transmission mechanism, and meets the use requirements. Among them, the drive mechanism 4 is a mechanism connected to the nut assembly 2 for providing power to the nut assembly 2 to drive the nut assembly 2 to rotate. The first workpiece may be, but is not limited to, a load device, such as a processing device, and the second workpiece may be, but is not limited to, a base frame.

[0048] In one embodiment, referring to Figure 1 、 Figure 2 and Figure 3 The transmission mechanism also includes a fixed seat 5, which is sleeved outside the nut assembly 2 and connected to the nut assembly 2, and the fixed seat 5 is used to connect the second workpiece.

[0049] As an example, the transmission mechanism also includes a fixing seat 5. During installation, the fixing seat 5 is placed outside the nut assembly 2 and connected to the nut assembly 2; then the fixing seat 5 is connected to the second workpiece so that the nut assembly 2 is installed on the second workpiece through the fixing seat 5.

[0050] In one embodiment, referring to Figure 1 、 Figure 2 and Figure 3The nut assembly 2 includes a nut 21 and a nut sleeve 22; the nut 21 is sleeved on the screw rod 1 and is used to be connected to the driving mechanism 4. It rotates under the drive of the driving mechanism 4 to make the screw rod 1 move along the axial direction; the nut sleeve 22 is sleeved outside the nut 21; the fixing seat 5 is sleeved outside the nut sleeve 22 and is connected to the nut sleeve 22.

[0051] As an example, the nut assembly 2 includes a nut 21 and a nut sleeve 22; during installation, the nut 21 is sleeved on the screw rod 1, and the nut sleeve 22 is sleeved outside the nut 21; then the fixing seat 5 is sleeved outside the nut sleeve 22 and connected to the nut sleeve 22. With this design, the nut 21 can rotate in the nut sleeve 22 with the nut sleeve 22 and the fixing seat 5 as the reference; the nut 21 is connected to the driving mechanism 4, and under the drive of the driving mechanism 4, the nut 21 rotates, and the steel ball inside the nut 21 can make the screw rod 1 move in the axial direction, thereby adjusting the position of the first workpiece connected to the screw rod 1.

[0052] In one embodiment, referring to Figure 1 、 Figure 2 and Figure 3 The transmission mechanism also includes a bearing 6 and an end cover 7; the bearing 6 is arranged between the nut assembly 2 and the fixed seat 5; an end cover 7 is provided at each end of the fixed seat 5, and the end cover 7 is connected to the nut assembly 2 and the bearing 6.

[0053] As an example, the transmission mechanism also includes a bearing 6 and an end cover 7; during installation, the bearing 6 is arranged between the nut assembly 2 and the fixed seat 5 to provide support for embedding the nut assembly 2 in the fixed seat 5 and ensure the stability of the nut assembly 2. An end cover 7 is provided at both ends of the fixed seat 5 along the axial direction of the screw rod 1, and the end cover 7 is connected to the nut assembly 2 and the bearing 6 to make the installation of the bearing 6 more secure and stable. In this example, the bearing 6 includes two relatively arranged tapered bearings, which can make the installation of the nut assembly 2 more stable and the concentricity of the nut assembly 2 and the fixed seat 5 better. In addition, a sealing ring is provided between the end cover 7 and the fixed seat 5 to play a good sealing role.

[0054] In one embodiment, referring to Figure 1 、 Figure 2 and Figure 3 The transmission mechanism also includes a round nut 8, which is sleeved on the nut assembly 2 and connected to the end cover 7 close to the support assembly 3.

[0055] As an example, the transmission mechanism also includes a round nut 8. During installation, the round nut 8 is mounted on the nut assembly 2 and connected to the end cover 7 close to the support assembly 3. This allows the nut assembly 2, the bearing 6 and the fixing seat 5 to remain concentric, making the installation of the nut assembly 2 and the bearing 6 more secure and stable. At the same time, the round nut 8 is located on the side of the nut assembly 2 away from the driving mechanism 4 to avoid interference between the round nut 8 and the driving mechanism 4.

[0056] In one embodiment, referring to Figure 1 、 Figure 2 and Figure 3 The support assembly 3 includes a support seat 31 and a pad 32; the support seat 31 and the pad 32 are spaced apart on the screw rod 1 to form an installation gap for installing the first workpiece.

[0057] As an example, the support assembly 3 includes a support seat 31 and a pad 32; during installation, the support seat 31 and the pad 32 are spaced apart on the screw rod 1 to form an installation gap so that the first workpiece can be installed on the screw rod 1. In this way, the support seat 31 and the pad 32 cooperate to facilitate the installation and disassembly of the first workpiece.

[0058] In one embodiment, referring to Figure 1 、 Figure 2 and Figure 3 The transmission mechanism also includes a tightening nut 9, which is arranged between the screw rod 1 and the pad 32 and connected to the support seat 31.

[0059] As an example, the transmission mechanism also includes a tightening nut 9. During installation, the tightening nut 9 is set between the screw rod 1 and the spacer 32 and connected to the support seat 31. By tightening the tightening nut 9, the installation gap between the spacer 32 and the support seat 31 can be adjusted to adapt to the installation of first workpieces of different thicknesses on the screw rod 1.

[0060] The present invention provides a transmission device, referring to Figures 1 to 5 , including a driving mechanism 4 and a transmission mechanism; the driving mechanism 4 is connected to the nut assembly 2 in the transmission mechanism for driving the nut assembly 2 to rotate.

[0061] As an example, the transmission device includes a driving mechanism 4 and a transmission mechanism; the transmission mechanism includes a screw 1, a nut assembly 2 and a support assembly 3; when installing, the support assembly 3 is sleeved on the screw 1, and the first workpiece is installed on the support assembly 3; the nut assembly 2 is sleeved on the screw 1, the nut assembly 2 is connected to the second workpiece, and the nut assembly 2 is connected to the driving mechanism 4, and a steel ball is provided in the nut assembly 2, and the steel ball is connected to the screw 1; under the drive of the driving mechanism 4, the nut assembly 2 rotates, and the steel ball in the nut assembly 2 can make the screw 1 move in the axial direction. The transmission mechanism in this example can convert the power output by the driving mechanism 4 into power for controlling the movement of the screw 1 in the axial direction through the nut assembly 2, so that the screw 1 drives the support assembly 3 to move, thereby adjusting the position of the first workpiece on the support assembly 3. When the transmission mechanism is set in this way, when converting the power from a rotational mode to a moving mode, the structure occupies a smaller space, enhances the applicability of the transmission mechanism, and meets the use requirements.

[0062] In one embodiment, referring to Figure 4 and Figure 5 The driving mechanism 4 includes a motor 41, a driving wheel 42, a driven wheel 43 and a belt 44; the driving wheel 42 is connected to the output end of the motor 41, the driven wheel 43 is coaxially fixedly connected to the nut 21 of the nut assembly 2, and the belt 44 is sleeved on the driving wheel 42 and the driven wheel 43.

[0063] As an example, the drive mechanism 4 includes a motor 41, a driving wheel 42, a driven wheel 43, and a belt 44. During installation, the driving wheel 42 is connected to the output end of the motor 41, and the driven wheel 43 is coaxially fixedly connected to the nut 21 of the nut assembly 2. Specifically, the driven wheel 43 and the nut 21 are fixed to form an integral structure by pins, and the belt 44 is sleeved on the driving wheel 42 and the driven wheel 43. By controlling the operation of the motor 41, the driving wheel 42 can be driven to rotate. The driving wheel 42 drives the driven wheel 43 to rotate through the belt 44, thereby driving the nut assembly 2 to rotate, so that the steel ball in the nut assembly 2 can control the screw 1 to move in the axial direction. The transmission mechanism in this example can convert the power output by the driving mechanism 4 through the nut assembly 2 into power to control the movement of the screw 1 in the axial direction, thereby adjusting the position of the first workpiece. When the transmission mechanism is configured in this way, when converting the power from rotation to movement, the structure occupies less space, enhances the applicability of the transmission mechanism, and meets the use requirements. Among them, the belt 44 can be made of, but not limited to, polyurethane-non-elastic material.

[0064] In one embodiment, referring to Figure 4 and Figure 5 There are multiple driven wheels 43 and multiple transmission mechanisms, and the multiple transmission mechanisms are arranged in parallel and at intervals; each driven wheel 43 is connected to a nut assembly 2 in a transmission mechanism.

[0065] As an example, during the design, there are multiple driven wheels 43 and multiple transmission mechanisms. The number of transmission mechanisms is selected according to the actual application scenario. The number of driven wheels 43 is selected according to the number of transmission mechanisms. Multiple transmission mechanisms are arranged in parallel and spaced apart. Each driven wheel 43 is connected to a nut assembly 2 in a transmission mechanism. This arrangement can realize the simultaneous control of the nut assemblies 2 of multiple transmission mechanisms by the driving mechanism 4 to work simultaneously, so as to adjust different positions of the first workpiece at the same time and ensure the stability of the first workpiece; at the same time, it can also realize the simultaneous control of the nut assemblies 2 of multiple transmission mechanisms by the driving mechanism 4 to work simultaneously, so as to adjust different first workpieces at the same time.

[0066] In one embodiment, referring to Figure 4 and Figure 5The transmission device includes two transmission mechanisms arranged at intervals, each of which is provided with a driven pulley 43; a belt 44 is mounted on the driving pulley 42 and the two driven pulleys 43, and the driving pulley 42 and the two driven pulleys 43 are in contact with the inner side of the belt 44; the driving mechanism 4 also includes two transition pulleys 45, each transition pulley 45 is arranged between a driven pulley 43 and the driving pulley 42, and the transition pulley 45 is in contact with the outer side or the inner side of the belt 44.

[0067] As an example, a transmission device includes two transmission mechanisms spaced apart. During installation, each transmission mechanism is provided with a driven pulley 43. A belt 44 is mounted on a driving pulley 42 and two driven pulleys 43. The driving pulley 42 and two driven pulleys 43 engage with the inner side of the belt 44. Thus, when the driving pulley 42 rotates, the belt 44 simultaneously drives the two driven pulleys 43 to rotate. This allows the drive mechanism 4 to simultaneously control the nut assemblies 2 of the two transmission mechanisms to operate simultaneously, thereby simultaneously adjusting different positions of the first workpiece and ensuring the stability of the first workpiece. The drive mechanism 4 also allows the drive mechanism 4 to simultaneously control the nut assemblies 2 of the two transmission mechanisms to operate simultaneously, thereby simultaneously adjusting different first workpieces. The drive mechanism 4 also includes two transition pulleys 45. During installation, each transition pulley 45 is positioned between a driven pulley 43 and the driving pulley 42. The transition pulley 45 engages with the outer or inner side of the belt 44. By adjusting the position of the transition pulley 45, the tightness of the belt 44 can be adjusted to ensure that the driving pulley 42 can drive the driven pulley 43 to rotate via the belt 44, thereby achieving effective power transmission.

[0068] In one embodiment, referring to Figure 4 and Figure 5 The transmission device also includes a support plate 10, a limit frame 11 and a fixing mechanism 12; the motor 41 is arranged on the first side of the support plate 10, and the output shaft of the motor 41 passes through the support plate 10 and is connected to the driving wheel 42; the limit frame 11 is arranged on the second side of the support plate 10, and the limit frame 11 is provided with a movable space for the belt 44 to pass through; the fixing mechanism 12 is connected to the limit frame 11 and is used to connect the third workpiece.

[0069] As an example, the transmission device also includes a support plate 10, a limit frame 11, and a fixing mechanism 12; the motor 41 is arranged on the first side surface of the support plate 10, and the output shaft of the motor 41 passes through the support plate 10 and is connected to the driving wheel 42; in this way, the support plate 10 is used to connect a third workpiece, which can be but not limited to a base frame or a support frame, providing installation support for the motor 41, and driving the driving wheel 42 to rotate through the motor 41. The limit frame 11 is arranged on the second side surface of the support plate 10, and a movable space for the belt 44 to pass through is provided on the limit frame 11. Specifically, the limit frame 11 includes a first support plate and two side plates arranged on opposite sides of the first support plate. The first support plate and the two side plates form a U-shaped structure. The U-shaped structure cooperates with the support plate 10 to form a space for installing the driving wheel 42. An open groove is provided on the side where the first support plate connects to the support plate 10. The open groove cooperates with the support plate 10 to form a movable space for the belt 44 to pass through, wherein the first side surface and the second side surface are two opposite side surfaces of the support plate 10. The fixing mechanism 12 is connected to the limit frame 11 and is used to connect the third workpiece to adjust the working state of the limit frame 11 so that the limit frame 11 is opened or closed to facilitate the installation of the belt 44 on the driving wheel 42 so as to replace the belt 44.

[0070] In one embodiment, referring to Figure 4 and Figure 5 The fixing mechanism 12 includes a first fixing component 121 and a second fixing component 122; the first fixing component 121 and the second fixing component 122 are arranged on opposite sides of the limit frame 11; the first fixing component 121 includes a first support 1211 and a transfer shaft 1212, the first support 1211 is used to connect the third workpiece, the transfer shaft 1212 is arranged on the first support 1211, and one end of the limit frame 11 is rotatably connected to the transfer shaft 1212; the second fixing component 122 includes a second support 1221, a connecting shaft 1222 and an elastic member 1223; the second support 1221 is connected to the limit frame 11; the connecting shaft 1222 is inserted into the second support 1221 for connecting the third workpiece; the elastic member 1223 is sleeved on the connecting shaft 1222 and is located between the second support 1221 and the third workpiece.

[0071] As an example, the fixing mechanism 12 includes a first fixing component 121 and a second fixing component 122; the first fixing component 121 and the second fixing component 122 are arranged on opposite sides of the limit frame 11, and the first fixing component 121 and the second fixing component 122 cooperate to adjust the working state of the limit frame 11 so that the limit frame 11 is opened or closed, providing convenience for installing the belt 44 on the driving wheel 42 of the activity space, thereby facilitating the replacement of the belt 44. The first fixing component 121 includes a first support 1211 and a transfer shaft 1212. During installation, the first support 1211 is used to connect the third workpiece to play a supporting and fixing role; the transfer shaft 1212 is set on the first support 1211, and one end of the limit frame 11 is rotatably connected to the transfer shaft 1212, so that the limit frame 11 can rotate around the transfer shaft 1212 to open or close the limit frame 11, so as to facilitate the installation of the belt 44 on the driving wheel 42 so as to replace the belt 44.

[0072] The second fixing assembly 122 includes a second support 1221, a connecting shaft 1222 and an elastic member 1223; during installation, the second support 1221 is connected to the limit frame 11; the connecting shaft 1222 is passed through the second support 1221 and is used to connect the third workpiece, so as to lock the limit frame 11; the elastic member 1223 is sleeved on the connecting shaft 1222 and is located between the second support 1221 and the third workpiece, so as to provide a buffer for the second support 1221.

[0073] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included in the scope of protection of the present invention.

Claims

1. A transmission mechanism, characterized in that: Including screw rod, nut assembly and support assembly; The support assembly is sleeved on the screw rod, and the support assembly is used to mount the first workpiece; The nut assembly is sleeved on the screw rod, and the nut assembly is used to connect the second workpiece and is also used to be connected to the driving mechanism. The nut assembly rotates under the drive of the driving mechanism to move the screw rod along the axial direction.

2. The transmission mechanism according to claim 1, characterized in that: The transmission mechanism further includes a fixing seat, which is sleeved outside the nut assembly and connected to the nut assembly, and the fixing seat is used to connect to the second workpiece.

3. The transmission mechanism according to claim 2, characterized in that: The nut assembly includes a nut and a nut sleeve; The nut is sleeved on the screw rod and is used to be connected to the driving mechanism and rotated under the drive mechanism to move the screw rod in the axial direction; The nut sleeve is arranged outside the nut; The fixing seat sleeve is arranged outside the nut sleeve and is connected to the nut sleeve.

4. The transmission mechanism according to claim 2, characterized in that: The transmission mechanism also includes a bearing and an end cover; The bearing is arranged between the nut assembly and the fixing seat; An end cover is respectively provided at both ends of the fixing seat, and the end cover is connected to the nut assembly and the bearing.

5. The transmission mechanism according to claim 4, characterized in that: The transmission mechanism further comprises a round nut which is sleeved on the nut assembly and connected to the end cover close to the support assembly.

6. The transmission mechanism according to claim 1, characterized in that: The support assembly includes a support seat and a cushion block; the support seat and the cushion block are spaced apart on the screw rod to form an installation gap for installing the first workpiece.

7. The transmission mechanism according to claim 6, characterized in that: The transmission mechanism further includes a tightening nut, which is arranged between the screw rod and the pad and connected to the support seat.

8. A transmission device, characterized in that: comprising a driving mechanism and a transmission mechanism according to any one of claims 3 to 7; The driving mechanism is connected to the nut assembly in the transmission mechanism and is used to drive the nut assembly to rotate.

9. The transmission device according to claim 8, characterized in that: The driving mechanism includes a motor, a driving wheel, a driven wheel and a belt; The driving wheel is connected to the output end of the motor, the driven wheel is coaxially and fixedly connected to the nut of the nut assembly, and the belt is sleeved on the driving wheel and the driven wheel.

10. The transmission device according to claim 9, characterized in that There are multiple driven wheels, multiple transmission mechanisms, and the multiple transmission mechanisms are arranged in parallel and spaced apart; Each of the driven wheels is connected to a nut assembly in the transmission mechanism.

11. The transmission device according to claim 9, characterized in that The transmission device comprises two transmission mechanisms spaced apart, each of the transmission mechanisms being provided with a driven wheel; The belt is sleeved on the driving wheel and the two driven wheels, and the driving wheel and the two driven wheels are in contact with the inner side of the belt; The driving mechanism further includes two transition wheels, each of which is arranged between the driven wheel and the driving wheel, and the transition wheel is in contact with the outer side or the inner side of the belt.

12. The transmission device according to claim 9, characterized in that The transmission device also includes a support plate, a limit frame and a fixing mechanism; The motor is arranged on the first side surface of the support plate, and the output shaft of the motor passes through the support plate and is connected to the driving wheel; The limiting frame is arranged on the second side surface of the support plate, and the limiting frame is provided with a movable space for the belt to pass through; The fixing mechanism is connected to the limiting frame and is used to connect the third workpiece.

13. The transmission device according to claim 12, characterized in that The fixing mechanism includes a first fixing component and a second fixing component; The first fixing component and the second fixing component are arranged on opposite sides of the limiting frame; The first fixing assembly includes a first support and a transfer shaft, the first support is used to connect the third workpiece, the transfer shaft is arranged on the first support, and one end of the limit frame is rotatably connected to the transfer shaft; The second fixing assembly includes a second support, a connecting shaft and an elastic member; the second support is connected to the limit frame; the connecting shaft is passed through the second support and is used to connect the third workpiece; the elastic member is sleeved on the connecting shaft and is located between the second support and the third workpiece.

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