A friction steel belt drive device and its measuring machine

Abstract

The present invention discloses a friction steel belt transmission device and a measuring machine thereof. The friction steel belt transmission device is used for coordinate measurement of the measuring machine, wherein: the friction steel belt transmission device includes a guide rail arranged at the top of the measuring shaft, a driving body slidably matched on the guide rail, a speed reducer connected to the driving body, and a steel belt assembly arranged on the side of the measuring shaft and frictionally matched with the speed reducer; the steel belt assembly includes a first fixing seat, a second fixing seat and a steel bar fixed at both ends of the measuring shaft. One end of the steel bar is fixedly connected to the first fixing seat, and the other end of the steel bar is elastically connected to the second fixing seat. The speed reducer is frictionally matched with the steel bar. In the embodiment of the present invention, by driving the speed reducer to frictionally move on the steel bar, the driving body is further driven to slide on the guide rail for measurement. The steel belt assembly ensures that the speed reducer can move stably and perform precise measurement, thereby realizing high-stability and high-precision transmission measurement.

Description

Technical Field

[0001] The present invention relates to the field of coordinate measuring machines, and particularly relates to a friction steel belt transmission device and a measuring machine thereof. Background Art

[0002] The common transmission forms of existing coordinate measuring machines are synchronous belt transmission, lead screw transmission, friction rod transmission, and gear rack transmission. All of these four transmission forms have deficiencies:

[0003] Synchronous belt transmission has insufficient rigidity itself and is not suitable for medium and large strokes;

[0004] Lead screw transmission has high requirements for the accuracy of the lead screw, relatively high costs, and there is no sufficiently long lead screw for large strokes. Moreover, there are problems such as swaying and unstable transmission during the transmission process;

[0005] Friction rod transmission has high requirements for installers and is relatively difficult to adjust;

[0006] Gear rack transmission has meshing clearances, inaccurate transmission, and high costs. Summary of the Invention

[0007] The purpose of the present invention is to provide a friction steel belt transmission device and a measuring machine thereof, aiming to solve the problems of low stability and inaccurate transmission existing in the transmission devices of existing coordinate measuring machines.

[0008] An embodiment of the present invention provides a friction steel belt transmission device and a measuring machine thereof, including: a guide rail provided at the top of a measuring shaft, a driving body slidably fitted on the guide rail, a speed reducer connected to the driving body, and a steel belt assembly provided on the side of the measuring shaft and frictionally engaged with the speed reducer; the steel belt assembly includes a first fixed seat, a second fixed seat, and a steel bar fixed at both ends of the measuring shaft. One end of the steel bar is fixedly connected to the first fixed seat, and the other end of the steel bar is elastically connected to the second fixed seat. The speed reducer is frictionally engaged with the steel bar.

[0009] Further, the speed reducer includes a box body connected to the driving body, a friction rubber wheel installed on the box body, a motor for driving the friction rubber wheel to rotate, and a pressing rubber wheel opposite to the friction rubber wheel. The steel bar is located between the friction rubber wheel and the pressing rubber wheel.

[0010] Further, an upper bearing mounting plate and a lower bearing mounting plate are also installed on the box body. The friction rubber wheel is installed between the upper bearing mounting plate and the lower bearing mounting plate. A pressing wheel bearing seat that can move back and forth in the direction towards the friction rubber wheel is also installed between the upper bearing mounting plate and the lower bearing mounting plate. The pressing rubber wheel is installed on the pressing wheel bearing seat. A pressing cylinder is also installed on the box body. The pressing cylinder is connected to the pressing wheel bearing seat through a locking device.

[0011] Furthermore, a driving wheel bearing seat is also installed on the box body. A driving wheel mounting shaft is vertically arranged in the driving wheel bearing seat, and a driving wheel is mounted on the driving wheel mounting shaft; a driven wheel for driving the friction rubber wheel to rotate is installed on the upper bearing mounting plate. A primary reduction flat belt is sleeved between the shaft wheel on the rotating shaft of the motor and the driving wheel, a secondary reduction flat belt is sleeved between the driving wheel mounting shaft and the driven wheel, and the upper end of the central shaft of the friction rubber wheel is mounted on the driven wheel.

[0012] Furthermore, a primary tensioner for adjusting the tension of the primary reduction flat belt is also arranged on the box body, and a secondary tensioner for adjusting the tension of the secondary reduction flat belt is also arranged on the driving wheel bearing seat.

[0013] Furthermore, a fixed adapter is provided on the first fixed seat, and an elastic adapter is provided on the second fixed seat. One end of the steel bar is fixedly connected to the fixed adapter, and the other end is connected to the elastic adapter.

[0014] Furthermore, the fixed adapter includes a first through rod passing through the first fixed seat. One end of the first through rod is connected to one end of the steel bar through a first connecting block. The other end of the first through rod is sequentially sleeved with a first flat thrust bearing, a first spherical washer, a first tapered washer, and a first locking nut; the elastic adapter includes a second through rod passing through the second fixed seat. One end of the second through rod is connected to the other end of the steel bar through a second connecting block. The other end of the second through rod is sequentially sleeved with a second flat thrust bearing, a second spherical washer, a second tapered washer, a spring, and a second locking nut.

[0015] Furthermore, the first through rod penetrates into the first connecting block, the second through rod penetrates into the second connecting block, and first tightening nuts and second tightening nuts for adjusting the tightness of the first connecting block and the second connecting block are respectively threadedly connected to the first through rod and the second through rod.

[0016] Furthermore, a first anti-large-angle rotation block for the steel bar extending to the side of the first connecting block is also provided on the first fixed seat, and a second anti-large-angle rotation block for the steel bar extending to the side of the second connecting block is also provided on the second fixed seat. There is a gap between the first anti-large-angle rotation block and the first connecting block, and there is a gap between the second anti-large-angle rotation block and the second connecting block.

[0017] An embodiment of the present invention also provides a measuring machine, which includes the friction steel belt transmission device as described above.

[0018] An embodiment of the present invention provides a friction steel belt transmission device and a measuring machine thereof. The friction steel belt transmission device is used for coordinate measurement of the measuring machine, wherein: the friction steel belt transmission device includes a guide rail arranged at the top of the measuring shaft, a driving body slidably matched on the guide rail, a speed reducer connected to the driving body, and a steel belt assembly arranged on the side of the measuring shaft and frictionally matched with the speed reducer; the steel belt assembly includes a first fixed seat, a second fixed seat and a steel bar fixed at both ends of the measuring shaft. One end of the steel bar is fixedly connected to the first fixed seat, and the other end of the steel bar is elastically connected to the second fixed seat. The speed reducer is frictionally matched with the steel bar. Through the embodiment of the present invention, the speed reducer is driven to frictionally move on the steel bar, and then the driving body is driven to slide on the guide rail for measurement. The steel belt assembly ensures that the speed reducer can move stably and perform precise measurement, thereby realizing high-stability and high-precision transmission measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 Schematic diagram of the friction steel belt transmission device provided by the embodiment of the present invention;

[0021] Figure 2 Schematic diagram of the structure of the speed reducer provided by the embodiment of the present invention;

[0022] Figure 3 Another perspective structural diagram of the speed reducer provided by the embodiment of the present invention;

[0023] Figure 4 Another perspective structural diagram of the speed reducer provided by the embodiment of the present invention;

[0024] Figure 5 Cross-sectional structural diagram of the speed reducer provided by the embodiment of the present invention;

[0025] Figure 6 Another perspective structural diagram of the speed reducer provided by the embodiment of the present invention;

[0026] Figure 7 Schematic diagram of the structure of the steel belt assembly provided by the embodiment of the present invention;

[0027] Figure 8 Another perspective structural diagram of the steel belt assembly provided by the embodiment of the present invention;

[0028] Figure 9 For Figure 8Schematic diagram of the enlarged structure of local area A;

[0029] Figure 10 is Figure 8 Schematic diagram of the enlarged structure of local area B in Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] It should be understood that when used in this specification and the appended claims, the terms "comprises" and "comprising" indicate the presence of the described features, wholes, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0032] It should also be understood that the terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in this specification of the present invention and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" are intended to include the plural forms.

[0033] It should be further understood that the term " / and / " used in this specification of the present invention and the appended claims refers to any combination and all possible combinations of one or more of the related listed items, and includes these combinations.

[0034] Please refer to Figure 1 , an embodiment of the present invention provides a friction steel belt transmission device, including a guide rail 4 arranged on the top of a measuring shaft, a driving body 3 slidably fitted on the guide rail 4, a speed reducer 1 connected to the driving body 3, and a steel belt assembly 2 arranged on the side of the measuring shaft and in frictional cooperation with the speed reducer 1; the steel belt assembly 2 includes a first fixed seat 21, a second fixed seat 22 and a steel bar 23 fixed at both ends of the measuring shaft, one end of the steel bar 23 is fixedly connected to the first fixed seat 21, the other end of the steel bar 23 is elastically connected to the second fixed seat 22, and the speed reducer 1 is in frictional cooperation with the steel bar 23.

[0035] Combined with Figure 2 and Figure 3 , in this embodiment, the transmission process of the friction steel belt transmission device is as follows: the motor 1111 on the speed reducer 1 (reference Figure 2)Provide a driving force for the reducer 1 to move frictionally on the steel bar 23. The movement of the reducer 1 can synchronously drive the driving body 3 to move on the guide rail 4. During the movement of the reducer 1, the steel bar 23 itself has high rigidity and high stability to ensure the stable movement of the reducer 1. One end of the steel bar 23 is elastically connected to the second fixed seat 22, which avoids the deformation problem that may be caused by uneven force or excessive tension of the steel bar 23, and also improves the accuracy of transmission measurement, thereby realizing high-stability and high-accuracy transmission measurement.

[0036] In one embodiment, the reducer 1 includes a box body 11 connected to the driving body 3, a friction rubber wheel 115 installed on the box body 11, a motor 1111 for driving the friction rubber wheel 115 to rotate, and a pressing rubber wheel 117 opposite to the friction rubber wheel 115. The steel bar 23 is located between the friction rubber wheel 115 and the pressing rubber wheel 117.

[0037] In this embodiment, the friction rubber wheel 115 abuts against one side surface of the steel bar 23, and the pressing rubber wheel 117 presses against the other side surface of the steel bar 23, thereby clamping the steel bar 23. When the motor 1111 is started, it can drive the friction rubber wheel 115 to rotate on the steel bar 23, and then drive the reducer 1 to move on the steel bar 23.

[0038] Furthermore, it should be noted that if the clamping force between the pressing rubber wheel 117 and the friction rubber wheel 115 is too large, it may cause the motor 1111 to have an excessive working load and be easily damaged. If the clamping force is too small, the friction rubber wheel 115 may slip, affecting the accuracy of the movement of the reducer 1. Therefore, the clamping force between the pressing rubber wheel 117 and the friction rubber wheel needs to be tested and analyzed in advance to obtain the optimal clamping force, so as to ensure the accuracy of the movement of the reducer 1 and extend the service life of the motor 1111.

[0039] Combined with Figure 4 and Figure 5 , in one embodiment, an upper bearing mounting plate 113 and a lower bearing mounting plate 114 are further installed on the box body 11. The friction rubber wheel 115 is installed between the upper bearing mounting plate 113 and the lower bearing mounting plate 114. A pressing wheel bearing seat 116 that can move back and forth in the direction towards the friction rubber wheel 115 is also installed between the upper bearing mounting plate 113 and the lower bearing mounting plate 114. The pressing rubber wheel 117 is installed on the pressing wheel bearing seat 116. A pressing cylinder 112 is further installed on the box body 11, and the pressing cylinder 112 is connected to the pressing wheel bearing seat 116 through a locking device 118.

[0040] In this embodiment, the pressing cylinder 112 provides pressure, and the locking device 118 can be a locking screw. The pressure provided by the pressing cylinder 112 will change, so as to adjust the clamping force between the pressing rubber wheel 117 and the friction rubber wheel 115 through the locking device 118. The pressing rubber wheel 117 is installed on the pressing wheel bearing seat 116. When the pressure provided by the pressing cylinder 112 changes, the pressing rubber wheel 117 can move back and forth synchronously along the direction towards the friction rubber wheel 115 with the pressing wheel bearing seat 116. In this way, the distance between the pressing rubber wheel 117 and the friction rubber wheel 115 changes, that is, the clamping force between the pressing rubber wheel 117 and the friction rubber wheel 115 changes.

[0041] Specifically, during the long-term transmission process, when the friction rubber wheel 115 has a rotation jamming or slipping phenomenon on the steel bar 23, it may be that there is a problem with the clamping force between the pressing rubber wheel 117 and the friction rubber wheel 115. At this time, the clamping force between the pressing rubber wheel 117 and the friction rubber wheel 115 can be adjusted by adjusting the pressure value of the pressing cylinder 112. That is, when the pressure of the pressing cylinder 112 is increased, the clamping force between the pressing rubber wheel 117 and the friction rubber wheel 115 increases; when the pressure of the pressing cylinder 112 is decreased, the clamping force between the pressing rubber wheel 117 and the friction rubber wheel 115 decreases.

[0042] Furthermore, both the friction rubber wheel 115 and the pressing rubber wheel 117 are polyurethane-coated rubber wheels. The main purpose of using polyurethane-coated rubber wheels is to ensure a certain elasticity during the transmission process and at the same time protect the steel bar 23 from being scratched.

[0043] Combined with Figure 6 , in an embodiment, a driving wheel bearing seat 12 is further installed on the box body 11. A driving wheel mounting shaft 124 is vertically arranged in the driving wheel bearing seat 12 and a driving wheel 125 mounted on the driving wheel mounting shaft 124; a driven wheel 1131 for driving the friction rubber wheel 115 to rotate is installed on the upper bearing mounting plate 113. A first-stage reduction flat belt 13 is sleeved between the shaft wheel 11111 on the rotating shaft of the motor 1111 and the driving wheel 125. A second-stage reduction flat belt 14 is sleeved between the driving wheel mounting shaft 124 and the driven wheel 1131. The upper end of the central axis of the friction rubber wheel 115 is installed on the driven wheel 1131.

[0044] In this embodiment, the specific structure for driving the rotation of the friction rubber wheel 115 is defined. Its working principle is as follows: Start the motor 1111 to drive the shaft wheel 11111 to rotate. The shaft wheel 11111 drives the driving wheel 125 to rotate through the first-stage reduction flat belt 13. The driving wheel 125 rotates synchronously with the driving wheel mounting shaft 124. The driving wheel mounting shaft 124 drives the driven wheel 1131 to rotate through the second-stage reduction flat belt 14. When the driven wheel 1131 rotates, it can drive the friction rubber wheel 115 to rotate synchronously.

[0045] In this embodiment, the first-stage reduction flat belt 13 and the second-stage reduction flat belt 14 are used as two-stage reductions to better achieve a high-stability transmission effect. The shaft wheel 11111, the driving wheel 125, and the driven wheel 1131 are all drum-shaped wheels. The purpose of using drum-shaped wheels is to better ensure that both the first-stage reduction flat belt 13 and the second-stage reduction flat belt 14 can automatically align to the center position during the movement process, further ensuring the stability of the transmission.

[0046] In one embodiment, a first-stage tensioner for adjusting the tension of the first-stage reduction flat belt 13 is further provided on the box body 11, and a second-stage tensioner for adjusting the tension of the second-stage reduction flat belt 14 is further provided on the driving wheel bearing seat 12.

[0047] In this embodiment, the motor 1111 is installed on the box body 11 through the motor mounting plate 111. The position of the motor mounting plate 111 can be moved and adjusted on the box body 11. The first-stage tensioner is used to pre-adjust the position of the motor mounting plate 111, so that the first-stage reduction flat belt 13 between the rotating shaft and the driving wheel 125 is adjusted to an appropriate tension. Then, the motor mounting plate 111 can be fixed by bolts to maintain the tension of the first-stage reduction flat belt 13. Specifically, the first-stage tensioner includes at least one first-stage tensioning bolt 15. In this embodiment, two first-stage tensioning bolts 15 can be arranged side by side. The first-stage tensioning bolt 15 passes through the box body 11 and is threadedly connected to the inside of the motor mounting plate 111. The first-stage tensioning bolt 15 is rotatably connected to the box body 11. In this way, during the pre-adjustment of the position of the motor mounting plate 111, by rotating the first-stage tensioning bolt 15, the motor mounting plate 111 can be driven to drive the motor 1111 to move. When the motor 1111 moves, the distance between the shaft wheel 11111 and the driving wheel 125 changes, thereby adjusting the tension of the first-stage reduction flat belt 13. At the same time, the parallelism between the shaft wheel 11111 and the driving wheel 125 can also be adjusted to ensure that the first-stage reduction flat belt 13 can be centered and not jammed during operation.

[0048] The driving wheel bearing seat 12 includes an adjusting plate 121 mounted on the box body 11, an upper driving wheel bearing plate 122 and a lower driving wheel bearing plate 123 arranged on the adjusting plate 121. The driving wheel 125 is mounted between the upper driving wheel bearing plate 122 and the lower driving wheel bearing plate 123. One side of the adjusting plate 121 extends to the side of the box body 11 and then continues to fold and extend to form a folding block 1211. The position of the adjusting plate 121 can be adjusted by moving it on the box body 11. The secondary tensioner is arranged on the folding block 1211 and is used to pre-adjust the position of the adjusting plate 121, so that the secondary reduction flat belt 14 between the driving wheel 125 and the driven wheel 1131 is adjusted to an appropriate tension degree, and then the adjusting plate 121 is fixed by bolts to maintain the tension degree of the secondary reduction flat belt 14.

[0049] Specifically, the secondary tensioner includes at least one secondary tensioning bolt 16. In this embodiment, two secondary tensioning bolts 16 can be arranged side by side. The secondary tensioning bolt 16 passes through the folding block 1211 and is threadedly connected to the box body 11. The secondary tensioning bolt 16 is rotatably connected to the folding block 1211. In this way, during the pre-adjustment of the position of the adjusting plate 121, by rotating the secondary tensioning bolt 16, the adjusting plate 121 (i.e., the driving wheel bearing seat 12) can be driven to drive the driving wheel 125 to move. When the driving wheel 125 moves, the distance between the driving wheel 125 and the driven wheel 1131 changes, thereby adjusting the tension degree of the secondary reduction flat belt 14. At the same time, the parallelism between the driving wheel 125 and the driven wheel 1131 can also be adjusted to ensure that the secondary reduction flat belt 14 can be centered and not jammed during operation.

[0050] Please refer to Figure 7 and Figure 8 , in an embodiment, a fixed adapter 211 is provided on the first fixed seat 21, and an elastic adapter 221 is provided on the second fixed seat 22. One end of the steel bar 23 is fixedly connected to the fixed adapter 211, and the other end is connected to the elastic adapter 221.

[0051] In this embodiment, through the fixed adapter 211 and the elastic adapter 221, when the steel bar 23 is in a tensioned state, or under uneven stress, or asymmetrically installed, the stability of the steel bar 23 is ensured, and the tensile deformation performance of the steel bar 23 is also improved.

[0052] Combined with Figure 9 and Figure 10, in one embodiment, the fixed adapter 211 includes a first through rod 2111 passing through the first fixed seat 21. One end of the first through rod 2111 is connected to one end of the steel bar 23 through a first connecting block 24. The other end of the first through rod 2111 is sequentially sleeved with a first flat thrust bearing 2112, a first spherical washer 2113, a first tapered washer 2114, and a first locking nut 2115. The elastic adapter 221 includes a second through rod 2211 passing through the second fixed seat 22. One end of the second through rod 2211 is connected to the other end of the steel bar 23 through a second connecting block 25. The other end of the second through rod 2211 is sequentially sleeved with a second flat thrust bearing 2212, a second spherical washer 2213, a second tapered washer 2214, a spring 2215, and a second locking nut 2216.

[0053] In this embodiment, the first connecting block 24 and the second connecting block 25 can be fixed to both ends of the steel bar 23 by bolts. During the disassembly and assembly of the steel bar 23, the steel bar 23 fixed to the first connecting block 24 and the second connecting block 25 by bolts is placed between the first fixed seat 21 and the second fixed seat 22. Then, the first through rod 2111 is passed through the first fixed seat 21 and connected to the first connecting block 24, and the second through rod 2211 is passed through the second fixed seat 22 and connected to the second connecting block 25, and the installation can be completed. Finally, corresponding adjustments can be made according to the measurement requirements for use. The steel bar 23 in this embodiment is simple and convenient to install, and the steel bar 23 can be of a longer length, which can meet the medium and large-sized transmission measurement.

[0054] The first locking nut 2115 can lock the first flat thrust bearing 2112, the first spherical washer 2113, and the first tapered washer 2114 to the first fixed seat 21. The second locking nut 2216 can lock the second flat thrust bearing 2212, the second spherical washer 2213, the second tapered washer 2214, and the spring 2215 to the second fixed seat 22. By adjusting the tightness of the first locking nut 2115 and the second locking nut 2216, the first through rod 2111 and the second through rod 2211 can rotate, that is, the steel bar 23 can also be in a rotatable state through the first connecting block 24 and the second connecting block 25. In this way, various errors can be eliminated during the measurement process, and the measurement accuracy can be improved.

[0055] Specifically, the first planar thrust bearing 2112 and the second planar thrust bearing 2212 make the forces on both ends of the steel bar 23 more uniform; the first spherical washer 2113 and the second spherical washer 2213 can release the rotational freedom of the steel bar 23, eliminate the rotation of the steel bar 23 caused by the errors between the reducer 1 and the guide rail 4 during the transmission process, and also eliminate the torsional deformation of the steel bar 23 caused by the asymmetric installation of both ends when the steel bar 23 is tensioned; the first conical washer 2114 and the second conical washer 2214 ensure that when the steel bar 23 is tensioned, the errors caused by asymmetric stress points at both ends due to processing and installation are eliminated; the spring 2215 can be a disc spring, and the disc spring prevents the change in temperature from bringing changes to the tension of the steel bar 23, and at the same time ensures that the tension of the steel bar 23 is not too large, as excessive tension may pull the steel bar 23 into plastic deformation.

[0056] The material of the steel bar 23 is a martensitic stainless steel bar 23, which has high hardness and small tensile deformation, thus achieving high rigidity and high stability of the friction steel belt drive.

[0057] In an embodiment, the first through rod 2111 penetrates into the first connection block 24, the second through rod 2211 penetrates into the second connection block 25, and the first tightening nut 2116 and the second tightening nut 2217 for adjusting the tightness of the first connection block 24 and the second connection block 25 are respectively threadedly connected to the first through rod 2111 and the second through rod 2211.

[0058] In this embodiment, during the measurement process, through the first tightening nut 2116 and the second tightening nut 2217, the first through rod 2111 and the first connection block 24 can be locked and fixed, and the second through rod 2211 and the second connection block 25 can be locked and fixed to maintain the stability of the measurement; when the steel bar 23 needs to be adjusted, the first tightening nut 2116 and the second tightening nut 2217 are loosened, so that the first through rod 2111 and the second through rod 2211 can be respectively loosened from the first connection block 24 and the second connection block 25, and then the steel bar 23 can be adjusted.

[0059] In an embodiment, the first fixing seat 21 is further provided with a first anti-large-angle rotation block 212 of the steel bar extending to the side of the first connection block 24, and the second fixing seat 22 is further provided with a second anti-large-angle rotation block 222 of the steel bar extending to the side of the second connection block 25. There is a gap between the first anti-large-angle rotation block 212 of the steel bar and the first connection block 24, and there is a gap between the second anti-large-angle rotation block 222 of the steel bar and the second connection block 25.

[0060] In this embodiment, the steel bar 23 is in a rotatable state, which solves problems such as the installation error between the reducer 1 and the driving body 3, uneven force on the steel bar 23 during installation, tension deformation of the steel bar 23, and measurement error. However, if the steel bar 23 rotates excessively, it may cause a greater error in the friction fit between it and the reducer 1. Therefore, by setting the first anti-large-angle rotation block 212 and the second anti-large-angle rotation block 222 of the steel bar, the rotation of the first connection block 24 and the second connection block 25 is restricted, thereby restricting the excessive rotation of the steel bar 23 and ensuring the stability of the transmission process.

[0061] Both the first connection block 24 and the second connection block 25 can be set in an L shape. In this way, the first connection block 24 can be called the first L-shaped connection block, and the second connection block 25 can be called the second L-shaped connection block. One end of the steel bar 23 is fixed on the step of the first L-shaped connection block through the first fixing block 231. The fixing method can be to fix it in the step of the first L-shaped connection block by passing a screw or bolt through the first fixing block 231. The other end of the steel bar 23 is fixed on the step of the second L-shaped connection block through the second fixing block 232. The fixing method can be to fix it in the step of the second L-shaped connection block by passing a screw or bolt through the second fixing block 232.

[0062] An embodiment of the present invention also provides a measuring machine, which includes the friction steel belt transmission device as described above.

[0063] The various embodiments in the specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple. For the relevant parts, refer to the description in the method part. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0064] It should also be noted that in this specification, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive.

[0065] Comprise, so that a process, method, article, or apparatus that includes a series of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus. Without more limitations, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the said element.

Claims

1. A friction steel belt drive device is applied to a measuring machine, characterized in that: It includes a guide rail arranged at the top of the measuring shaft, a driving body slidably fitted on the guide rail, a speed reducer connected to the driving body, and a steel strip assembly arranged on the side of the measuring shaft and in frictional fit with the speed reducer; the steel strip assembly includes a first fixed seat, a second fixed seat and a steel strip fixed at both ends of the measuring shaft, one end of the steel strip is fixedly connected to the first fixed seat, the other end of the steel strip is elastically connected to the second fixed seat, and the speed reducer is in frictional fit with the steel strip; A fixed adapter is provided on the first fixed seat, an elastic adapter is provided on the second fixed seat, one end of the steel strip is fixedly connected to the fixed adapter, and the other end is connected to the elastic adapter; The fixed adapter includes a first through rod passing through the first fixed seat, one end of the first through rod is connected to one end of the steel strip through a first connecting block, and the other end of the first through rod is sequentially sleeved with a first flat thrust bearing, a first spherical washer, a first tapered washer and a first locking nut; the elastic adapter includes a second through rod passing through the second fixed seat, one end of the second through rod is connected to the other end of the steel strip through a second connecting block, and the other end of the second through rod is sequentially sleeved with a second flat thrust bearing, a second spherical washer, a second tapered washer, a spring and a second locking nut; The first through rod penetrates into the first connecting block, the second through rod penetrates into the second connecting block, and first tightening nuts and second tightening nuts for adjusting the tightness of the first connecting block and the second connecting block are respectively threadedly connected to the first through rod and the second through rod; The steel strip is in a rotatable state, a first anti-steel strip large-angle rotation block extending to the side of the first connecting block is further provided on the first fixed seat, a second anti-steel strip large-angle rotation block extending to the side of the second connecting block is further provided on the second fixed seat, there is a gap between the first anti-steel strip large-angle rotation block and the first connecting block, and there is a gap between the second anti-steel strip large-angle rotation block and the second connecting block; both the first connecting block and the second connecting block are arranged in an L shape.

2. The friction steel belt transmission device according to claim 1, wherein: The speed reducer includes a box body connected to the driving body, a friction rubber wheel installed on the box body, a motor for driving the friction rubber wheel to rotate, and a pressing rubber wheel opposite to the friction rubber wheel, and the steel strip is between the friction rubber wheel and the pressing rubber wheel.

3. The friction steel belt transmission device according to claim 2, characterized in that: An upper bearing mounting plate and a lower bearing mounting plate are further installed on the box body, the friction rubber wheel is installed between the upper bearing mounting plate and the lower bearing mounting plate, a pressing wheel bearing seat capable of moving back and forth in the direction towards the friction rubber wheel is further installed between the upper bearing mounting plate and the lower bearing mounting plate, the pressing rubber wheel is installed on the pressing wheel bearing seat, and a pressing cylinder is further installed on the box body, and the pressing cylinder is connected to the pressing wheel bearing seat through a locking device.

4. The friction steel belt drive device according to claim 3, characterized in that: An active wheel bearing seat is also installed on the box body. A vertical active wheel mounting shaft and an active wheel mounted on the active wheel mounting shaft are arranged inside the active wheel bearing seat; a driven wheel for driving the interlocking friction rubber wheel is installed on the upper bearing mounting plate. A primary reduction flat belt is sleeved between the shaft wheel on the rotating shaft of the motor and the active wheel, and a secondary reduction flat belt is sleeved between the active wheel mounting shaft and the driven wheel. The upper end of the central shaft of the friction rubber wheel is mounted on the driven wheel.

5. The friction steel belt transmission device according to claim 4, characterized in that: A primary tensioner for adjusting the tension of the primary reduction flat belt is also arranged on the box body, and a secondary tensioner for adjusting the tension of the secondary reduction flat belt is also arranged on the active wheel bearing seat.

6. A measuring machine, characterized in that: It includes the friction steel belt transmission device according to any one of claims 1 to 5.

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