Size gauge for the interior of a frequency converter housing

Abstract

The utility model discloses a size gauge of frequency converter case inner chamber, including base, support frame is set up in the top surface of base, first guide post is removed and is set up in support frame, and the length setting has length scale along the length of first guide post, drive mechanism is set up in base, and drive mechanism is connected with first guide post drive, can drive first guide post and moves along vertical, abutment part includes first abutment part and second abutment part, and first abutment part is fixed and set up in first guide post, and second abutment part is removed and is set up in first guide post, and first abutment part and second abutment part all are provided with abutment surface. When measuring, through drive mechanism can first guide post adjust to suitable height fast, with first abutment part and frequency converter case inner chamber one side wall abut, and promote second abutment part and remove to frequency converter case inner chamber another side wall, when reading through length scale and seeing the width of frequency converter case inner chamber, whole process is relatively simple, fast and accurate to operate.

Description

Technical Field

[0001] This utility model relates to the technical field of measuring the internal dimensions of a chassis, and in particular to a dimensional measuring tool for the internal dimensions of a frequency converter chassis. Background Technology

[0002] When measuring the width of the inner cavity of a frequency converter chassis, traditional methods often require multiple adjustments to the position and angle of the measuring tool. This is especially true when measuring deeper cavities, where the operation is cumbersome and prone to failure or inaccurate data due to improper operation. Utility Model Content

[0003] To overcome the shortcomings of existing technical solutions, this utility model embodiment provides a dimensional gauge for the inner cavity of a frequency converter chassis.

[0004] The technical solution adopted by this utility model to solve its technical problem is: A dimensional gauge for the inner cavity of a frequency converter chassis, the dimensional gauge comprising: Base; A support frame is disposed on the top surface of the base; A first guide rod is movably mounted on the support frame, and a length scale is provided along the length of the first guide rod; A driving mechanism is provided on the base and is drivenly connected to a first guide rod, which can drive the first guide rod to move vertically. The abutting part includes a first abutting part and a second abutting part. The first abutting part is fixedly disposed on the first guide rod, and the second abutting part is movably disposed on the first guide rod and can move closer to or further away from the first abutting part. Both the first abutting part and the second abutting part are provided with abutting surfaces.

[0005] As a preferred technical solution of this utility model, the driving mechanism includes a lead screw, a lifting seat, and a driving assembly; one end of the lead screw is connected to the top of the base, and the other end of the lead screw is connected to the support frame; the lifting seat has a threaded hole that is threadedly connected to the lead screw, and the first guide rod is rotatably disposed on the lifting seat; the driving assembly is drivenly connected to the lead screw and is used to drive the lead screw to rotate around its axial direction.

[0006] As a preferred technical solution of this utility model, the drive assembly includes a rotating part, two transmission wheels and a belt; the first transmission wheel is fixedly sleeved on the lead screw, the second transmission wheel is fixedly disposed on the rotating part, and the belt is sleeved on the two transmission wheels.

[0007] As a preferred technical solution of this utility model, the dimensional gauge includes a second guide rod, one end of which is connected to the top surface of the base, and the other end of which is connected to the support frame. The lifting seat has a through guide hole, and the second guide rod passes through the guide hole.

[0008] As a preferred technical solution of this utility model, the lifting seat has a through guide waist hole, and a rotating shaft is provided on the outer side of the first guide rod. The rotating shaft is detachably slidably disposed in the guide waist hole.

[0009] As a preferred technical solution of this utility model, one end of the rotating shaft is provided with a locking hole that corresponds to and communicates with the guide waist hole; The dimensional gauge also includes a locking element, which is inserted into both the guide waist hole and the locking hole.

[0010] As a preferred technical solution of this utility model, the locking hole is a first threaded hole; the locking member includes a first screw and an abutment block, one end of the first screw is connected to the abutment block, and the other end of the first screw passes through both the guide waist hole and the first threaded hole, so that the abutment block abuts against the lifting seat.

[0011] As a preferred technical solution of this utility model, a guide groove is recessed along the length direction of the first guide rod; the second abutment part has a through hole, and a first moving block is provided in the through hole, and the first moving block slides in the guide groove.

[0012] As a preferred technical solution of this utility model, each of the second abutting parts is provided with two locking components for locking or releasing the second abutting part; each locking component includes a second moving block, a bolt and a locking part; the second moving block is slidably disposed in the guide groove, the second moving block is provided with a second threaded hole, the bolt passes through the locking part and one end of it is detachably inserted into the second threaded hole, which can drive the locking part to press against the outside of the first guide rod.

[0013] As a preferred technical solution of this utility model, the locking part is provided with a rubber part.

[0014] Compared with the prior art, the beneficial effects of this utility model are: During measurement, the first guide rod can be quickly adjusted to a suitable height by the drive mechanism, the first abutting part is abutted against one side wall of the inverter chassis cavity, and the second abutting part is pushed to move to the other side wall of the inverter chassis cavity. At this time, the width of the inverter chassis cavity can be read by the length scale. The whole process is relatively simple, fast and accurate. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is an overall structural diagram of an embodiment of the present utility model.

[0017] Figure 2 This is a structural diagram of the drive mechanism according to an embodiment of the present utility model.

[0018] Figure 3 This is a structural diagram of the lifting seat and locking component according to an embodiment of the present utility model.

[0019] Figure 4 This is an exploded view of the lifting seat and locking component according to an embodiment of the present utility model.

[0020] Figure 5 This is a structural diagram of the first guide rod, the first abutting part, and the second abutting part according to an embodiment of the present utility model.

[0021] Figure 6 This is a structural diagram of the second abutting part according to an embodiment of the present utility model.

[0022] Figure 7 This is a structural diagram of the locking assembly according to an embodiment of the present invention.

[0023] Numbers in the diagram 1. Base; 2. Support frame; 21. Lead screw; 22. Lifting seat; 221. Guide hole; 23. Drive assembly; 231. Rotating part; 232. Transmission wheel; 233. Belt; 24. Second guide rod; 25. Locking element; 251. First screw; 252. Abutment block; 26. Drive mechanism; 3. First guide rod; 31. Rotating shaft; 32. Guide groove; 41. Abutting surface; 42. First abutting part; 43. Second abutting part; 431. Through hole; 432. First moving block; 5. Locking assembly; 51. Second moving block; 52. Bolt; 53. Locking part. Detailed Implementation

[0024] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit it. It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on or indirectly on that other element. When an element is referred to as being "connected to" another element, it can be directly connected to or indirectly connected to that other element. It should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of those features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0025] The following describes in detail the specific structure of a dimensional gauge for the inner cavity of a frequency converter chassis provided in an embodiment of this utility model, according to the appendix. Figure 1-7 As shown, the specific structure of the dimensional inspection fixture includes a base 1, a support frame 2, a first guide rod 3, a drive mechanism 26, and an abutment part.

[0026] Place the base 1 on a table or the ground to support the support frame 2. When measuring the dimensions of the inverter chassis cavity, place the base 1 next to the inverter under test so that the abutment part can extend into the inner cavity of the inverter chassis.

[0027] according to Figure 1 As shown, the support frame 2 is disposed on the top surface of the base 1. Specifically, when measuring the height of the inner cavity of the inverter under test chassis or the width of a certain cavity position, the support frame 2 is used to adjust the height of the first guide rod 3 and the first abutment part 42 and the second abutment part 43 until the first guide rod 3 and the first abutment part 42 and the second abutment part 43 can be moved to the target specified height. With this configuration, depending on the height of the inner cavity located on the two opposite sides of the inverter under test chassis at different distances in the inner cavity, the support frame 2 can drive the first guide rod 3 and the first abutment part 42 and the second abutment part 43 to rise or fall simultaneously until the first guide rod 3 and the first abutment part 42 and the second abutment part 43 are at the specified height.

[0028] It should be noted that, since the inner cavity of some inverters under test includes a first inner cavity, a second inner cavity, and a third inner cavity, the spacing between the opposite sides of each inner cavity is different. For example, the width of the first inner cavity is longer than the width of the second inner cavity. Therefore, the drive mechanism 26 drives the first guide rod 3 and the first abutment part 42 and the second abutment part 43 to rise or fall simultaneously until the first abutment part 42 and the second abutment part 43 can extend into one of the inner cavities to be measured.

[0029] according to Figure 1 As shown, the first guide rod 3 is movably mounted on the support frame 2, and a length scale is provided along the length of the first guide rod 3. The drive mechanism 26 is mounted on the base 1 and is drivenly connected to the first guide rod 3, which can drive the first guide rod 3 to move vertically.

[0030] Specifically, when measuring the internal dimensions of the inverter chassis under test, the first guide rod 3 can be driven to rise and fall to a specified height by the drive mechanism 26, so that the first abutting part 42 and the second abutting part 43 can move to abut against the two sides opposite to the internal cavity respectively.

[0031] For example, when measuring the cavity width of the inverter chassis under test, the first guide rod 3 only needs to be raised or lowered to a specified height by the drive mechanism 26 until the first guide rod 3 is raised or lowered to a specified angle. At this time, the first abutting part 42 abuts against one side of the inverter chassis cavity, and pushes the second abutting part 43 to move to the other side of the inverter chassis cavity. At this time, the cavity width of the inverter chassis can be viewed by the length scale.

[0032] according to Figure 5 As shown, the abutting part includes a first abutting part 42 and a second abutting part 43. The first abutting part 42 is fixedly disposed on the first guide rod 3, and the other second abutting part 43 is movably disposed on the first guide rod 3, and can move closer to or further away from the first abutting part 42. Both the first abutting part 42 and the second abutting part 43 are provided with abutting surfaces.

[0033] Specifically, when the first guide rod 3 is adjusted to the specified height, the second abutment part 43 is pushed to move along the direction of the first abutment part 42 until the abutment surface 41 of the first abutment part 42 and the abutment surface 41 of the second abutment part 43 can respectively abut against the opposite sides of the cavity. Since a length scale is provided on the first guide rod 3, the width of the inner cavity of the inverter chassis under test can be determined according to the distance between the abutment surfaces 41 of the first abutment part 42 and the second abutment part 43. This setting not only allows for intuitive measurement of the cavity size, but also meets the requirement for high-precision measurement of the inner cavity size of the chassis.

[0034] It should be noted that since the contact surfaces 41 of the first contact part 42 and the second contact part 43 are set perpendicular to the extension direction of the length scale, this setting makes it easy for the measuring personnel to intuitively confirm the value on the length scale, so as to confirm the distance between the first contact part 42 and the second contact part 43 according to the length scale, thereby accurately measuring the width of the inner cavity of the inverter chassis under test.

[0035] according to Figure 2 As shown, in some specific embodiments, the drive mechanism 26 includes a lead screw 21, a lifting seat 22, and a drive assembly 23; one end of the lead screw 21 is connected to the top of the base 1, and the other end of the lead screw 21 is connected to the support frame 2; the lifting seat 22 is provided with a threaded hole that is threadedly connected to the lead screw 21; and the first guide rod 3 is provided on the lifting seat 22; the drive assembly 23 is drivenly connected to the lead screw 21 and is used to drive the lead screw 21 to rotate around its axial direction.

[0036] Specifically, when the drive assembly 23 drives the lead screw 21 to rotate, the threaded hole on the lifting seat 22 engages with the thread on the lead screw 21. As the lead screw 21 rotates, the threads at the engagement point move axially relative to each other, thus converting rotational motion into linear motion, thereby driving the lifting seat 22 to move up or down.

[0037] It should be noted that when the lead screw 21 rotates forward, the head of the threaded teeth on the lead screw 21 first contacts the threaded hole of the lifting seat 22. Since the thread is designed with a helical slope, the lifting seat 22 moves up and down a certain distance along the axis of the lead screw 21 with each rotation of the lead screw 21. The distance is constant and depends on the size of the thread pitch. Therefore, when the lead screw 21 rotates continuously in the forward direction, the lifting seat 22 continues to rise. When the lead screw 21 rotates in the reverse direction, the situation is reversed. The tail of the teeth on the lead screw 21 contacts the threaded hole of the lifting seat 22 and moves axially in a similar manner, causing the lifting seat 22 to descend.

[0038] according to Figure 2 As shown, specifically, the drive assembly 23 includes a rotating part 231, two drive wheels 232 and a belt 233; the front drive wheel 232 (driven drive wheel) is fixedly sleeved on the lead screw 21, and the rear drive wheel 232 (driving drive wheel) is fixedly installed on the rotating part 231; the belt 233 is sleeved on the two drive wheels 232.

[0039] Specifically, the rotating part 231 is used to provide power. Therefore, when the rotating part 231 rotates in its circumference, the drive drive wheel rotates in the same direction as the rotating part 231. Since the belt is connected to each drive wheel 232 to transmit power, the continuous rotation of the drive drive wheel gradually tightens the belt 233, thereby transmitting power from the drive drive wheel to the belt 233. The belt 233 then transmits the power to the driven drive wheel connected to it, causing the driven drive wheel to rotate. This drives the lead screw 21 to rotate in the direction of rotation of the driven drive wheel. This configuration achieves stable power transmission.

[0040] More specifically, the rotating part 231 is used to transmit its rotational motion to the driving drive wheel 232. Since the rotation axis of the rotating part 231 is parallel to the axis of the lead screw 21 and is fixedly connected to the driving drive wheel 232, the two are ensured to rotate synchronously. The driving drive wheel 232 is fixedly mounted on the rotating part 231 and rotates together with the rotating part 231. The outer peripheral surface of the driving drive wheel 232 is the contact surface of the belt 233. The power is transmitted to the driven drive wheel 232 through the belt 233. The driven drive wheel 232 is fixedly mounted on the lead screw 21 and rotates synchronously with the lead screw 21. The outer peripheral surface of the driven drive wheel 232 is also the contact surface of the belt 233. The power from the driving drive wheel 232 is received through the belt 233. The belt 233 is a flexible transmission element connecting two drive pulleys 232. Its function is to transmit power from the driving drive pulley 232 to the driven drive pulley 232. When the driving drive pulley 232 rotates, the belt 233 is driven by friction, and at the same time, the belt 233 also drives the driven drive pulley 232 to rotate. It is understood that the belt 233 in this embodiment of the present invention is either a friction belt 233 or an engagement belt 233, and the specific type is not limited. For example, an engagement belt 233 is a transmission structure that transmits power by the meshing of the teeth on the belt 233 with the teeth on the drive wheel 232. The transmission of the engagement belt 233 is achieved through the meshing of the teeth of the belt 233 with the teeth of the drive wheel 232. When one drive wheel 232 rotates, its teeth mesh with the teeth of the belt 233, and the interaction of the teeth drives the belt 233 to move. During the movement of the belt 233, the teeth of the belt 233 mesh with the teeth of another drive wheel 232, thereby driving the other drive wheel 232 to rotate.

[0041] It is understood that the rotating part 231 in this embodiment of the present invention is a manual crank or a turntable, and the specific type is not limited here.

[0042] according to Figure 1As shown, in a further embodiment, the dimensional gauge also includes a second guide rod 24. One end of the second guide rod 24 is connected to the top surface of the base 1, and the other end of the second guide rod 24 is connected to the support frame 2. The lifting seat 22 has a through guide hole, and the second guide rod 24 passes through the guide hole.

[0043] Specifically, the lifting seat 22 is slidably mounted on the second guide rod 24 and moves up and down under the guidance of the second guide rod 24. That is, the second guide rod 24 passes through the guide hole, thereby guiding the lifting seat 22 to ensure that the lifting seat 22 can move along a predetermined path during the rising and falling process, avoiding lateral movement or deviation. Through the cooperation of the second guide rod 24 and the lead screw 21, the lifting seat 22 can be more accurately positioned. In addition, the second guide rod 24 can also support the weight of the lifting seat 22, thereby reducing the burden on the lead screw 21.

[0044] according to Figure 3 and Figure 4 As shown, in some specific embodiments, the lifting seat 22 has a guide waist hole 221 through it, and a rotating shaft 31 is provided on the outer side of the first guide rod 3. The rotating shaft 31 is detachably slidably mounted in the guide waist hole 221. The extension direction of the guide waist hole 221 is perpendicular to the lead screw 21 or the second guide rod 24.

[0045] Specifically, to improve the ease of disassembly and assembly of the first guide rod 3, and to enhance the flexibility of adjusting its installation position, the rotating shaft 31 of the first guide rod 3 is detachably slidably mounted in the guide waist hole 221. Specifically, when adjusting the installation position of the first guide rod 3 or disassembling it, simply detach the rotating shaft 31 from the guide waist hole 221, then slide the rotating shaft 31 along the length of the guide waist hole 221 or remove the entire first guide rod 3. Conversely, when fixing the first guide rod 3, slide the rotating shaft 31 in the guide waist hole 221 to the designated target position, and then lock the rotating shaft 31 to secure the first guide rod 3.

[0046] As can be seen from the above embodiments, the rotating shaft 31 can move within the length range of the guide waist hole 221 to adjust the lateral direction of the first guide rod 3, that is, to move the first guide rod 3 laterally to the specified target position.

[0047] Furthermore, the first guide rod 3 can be rotated to a specified position via the rotating shaft 31, thereby adjusting the swing direction of the first guide rod 3. For example, the swing direction of the first guide rod 3 can be adjusted according to the cavity shape of the inverter chassis.

[0048] according to Figure 3 and Figure 4As shown, specifically, the dimensional gauge also includes a locking member 25; a locking hole is provided at one end of the rotating shaft 31, and the locking member 25 passes through both the guide waist hole 221 and the locking hole to fix the first guide rod 3.

[0049] Specifically, when adjusting the installation position of the first guide rod 3 or disassembling the first guide rod 3, after the locking member 25 is disengaged from the locking hole and the guide waist hole 221, the rotating shaft 31 cannot be locked at this time, so the entire first guide rod 3 can be disassembled and removed; conversely, when fixing and assembling the first guide rod 3, the locking hole is connected to the guide waist hole 221, and then the locking member 25 is moved from the other side of the lifting seat 22 and inserted into the guide waist hole 221 and the locking hole until one end of the rotating shaft 31 can fit against one side of the lifting seat 22, so that the rotating shaft 31 is fixed in the guide waist hole 221 at the specified target position, and the circumferential direction of the rotating shaft 31 can also be fixed to prevent the rotating shaft 31 from rotating along its circumferential direction.

[0050] according to Figure 4 As shown, in a further embodiment, the locking member 25 includes a first screw 251 and an abutment block 252. One end of the first screw 251 is connected to the abutment block 252, and the first screw 251 is movably inserted through the guide hole 221 and the first threaded hole.

[0051] Specifically, one end of the first screw 251 is connected to the side of the abutment block 252 near the lifting seat 22. When fixing the first guide rod 3, the first screw 251 is first passed through the guide waist hole 221 and then inserted into the first threaded hole of the rotating shaft 31. Through the threaded engagement between the first screw 251 and the first threaded hole, the first screw 251 can move along the depth of the first threaded hole until the abutment block 252 can abut against one side of the lifting seat 22. At the same time, the first guide rod 3 abuts against the other side of the lifting seat 22, thereby fixing the first guide rod 3.

[0052] according to Figure 5 As shown, in some specific embodiments, a guide groove 32 is recessed along the length direction of the first guide rod 3; the second abutment part 43 has a through hole 431, and a first moving block 432 is provided in the through hole 431, and the first moving block 432 slides in the guide groove 32.

[0053] Specifically, the first guide rod 3 has a rod-shaped structure of a certain length, and its surface is recessed with a guide groove 32 along its length. The function of the guide groove 32 is to provide a fixed movement trajectory for the first moving block 432, ensuring that the first moving block 432 can only move along the direction of the guide groove 32. The second abutment part 43 has a through hole 431 through it. The shape and size of the through hole 431 match the first guide rod, allowing the first guide rod to pass through the through hole 431. The first moving block 432 is disposed in the through hole 431 of the second abutment part 43 and slides within the guide groove 32 of the first guide rod. Thus, the first moving block 432 can only move along the length direction of the first guide rod 3 within the guide groove 32. The guide groove 32 provides a movement path for the first moving block 432 and also prevents the second abutment part 43 from rotating about the axial direction of the first guide rod 3.

[0054] according to Figure 5 As shown, in some specific embodiments, the guide groove 32 of this utility model embodiment is further provided with two locking components 5 for locking or releasing the second abutment part 43.

[0055] Specifically, in order to visually observe the distance between the two sides of the inner cavity, after the second abutting part 43 abuts against the two sides of the inner cavity of the inverter chassis under test, each locking component 5 is used to lock the second abutting part 43 so that the second abutting part 43 is fixed in the current position and to prevent the second abutting part 43 from shaking and causing errors.

[0056] according to Figure 7 As shown, specifically, each locking component includes a second moving block 51, a bolt 52, and a locking part 53; the second moving block 51 is slidably disposed in the guide groove 32, the second moving block 51 is provided with a second threaded hole, the bolt 52 passes through the locking part 53 and one end of it is detachably inserted into the second threaded hole, which can drive the locking part 53 to press the outer side of the first guide rod to fix the second moving block 51, and the two second moving blocks 51 are used to fix the second abutment part 43 in the current position.

[0057] Specifically, the guide groove 32 is provided on the first guide rod, providing a movement path for the first moving block 432 and a sliding space for the second moving blocks 51 in the two locking assemblies. When the second abutment part 43 is in a free state, it can slide along the guide groove 32 on the first guide rod and between the two second moving blocks 51. At this time, the second moving blocks 51 in the two locking assemblies are also in a free state and can slide within the guide groove 32. When the second abutment part 43 is moved to the required position on the first guide rod according to the detection needs, the second moving blocks 51 in the two locking assemblies are moved to both sides of the second abutment part 43, so that the two second moving blocks 51 are tightly against the second abutment part 43. Then, the bolt 52 is inserted through the locking part 53 and one end is detachably inserted into the second moving block 51. The second threaded hole of 1 is tightened by rotating the bolt 52. As the bolt 52 is tightened, the locking part 53 is pushed by the bolt 52, thereby pressing the outer side of the first guide rod. At this time, the friction between the locking part 53 and the first guide rod increases, so that the second moving block 51 is fixed in the current position. Since the two second moving blocks 51 are located on both sides of the second abutment part 43 and are fixed in the current position, the second abutment part 43 is firmly fixed to the first guide rod, so that the second abutment part 43 cannot slide in the guide groove 32, thereby realizing the locking function.

[0058] In a further embodiment, the locking part 53 is provided with a rubber part.

[0059] Specifically, the rubber part, made of rubber material, has a high coefficient of friction, especially when in contact with a metal surface. When the locking part 53 presses against the first guide rod by the tightening action of the bolt 52, the contact pressure between the rubber part and the first guide rod increases, thereby significantly increasing the friction. This friction can more effectively prevent the second moving block 51 from sliding within the guide groove 32, thus ensuring the stability of the second abutment part 43 in its current position. When the rubber part is compressed, it undergoes elastic deformation, allowing it to better conform to the surface of the first guide rod, further increasing the contact area and friction. Moreover, due to the elastic properties of rubber, even if minor unevenness or gaps occur during the locking process, the rubber part can fill these gaps through deformation, ensuring a more uniform and reliable locking effect.

[0060] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A dimensional gauge for the inner cavity of a frequency converter chassis, characterized in that, The dimensional inspection tool includes: Base; A support frame is disposed on the top surface of the base; A first guide rod is movably mounted on the support frame, and a length scale is provided along the length of the first guide rod; A driving mechanism is provided on the base and is drivenly connected to a first guide rod, which can drive the first guide rod to move vertically. The abutting part includes a first abutting part and a second abutting part. The first abutting part is fixedly disposed on the first guide rod, and the second abutting part is movably disposed on the first guide rod and can move closer to or further away from the first abutting part. Both the first abutting part and the second abutting part are provided with abutting surfaces.

2. The dimensional gauge for the inner cavity of the inverter chassis according to claim 1, characterized in that, The driving mechanism includes a lead screw, a lifting seat, and a driving assembly; one end of the lead screw is connected to the top of the base, and the other end of the lead screw is connected to the support frame; the lifting seat has a threaded hole that is threadedly connected to the lead screw, and the first guide rod is rotatably disposed on the lifting seat; the driving assembly is drivenly connected to the lead screw and is used to drive the lead screw to rotate around its axial direction.

3. The dimensional gauge for the inner cavity of the inverter chassis according to claim 2, characterized in that, The drive assembly includes a rotating part, two drive wheels, and a belt; the first drive wheel is fixedly sleeved on the lead screw, the second drive wheel is fixedly disposed on the rotating part, and the belt is sleeved on the two drive wheels.

4. The dimensional gauge for the inner cavity of the inverter chassis according to claim 2, characterized in that, The dimensional gauge includes a second guide rod, one end of which is connected to the top surface of the base, and the other end of which is connected to the support frame. The lifting seat has a through guide hole, and the second guide rod passes through the guide hole.

5. The dimensional gauge for the inner cavity of the inverter chassis according to claim 2, characterized in that, The lifting seat has a through guide waist hole, and a rotating shaft is provided on the outer side of the first guide rod. The rotating shaft is detachably slidably mounted in the guide waist hole.

6. The dimensional gauge for the inner cavity of the inverter chassis according to claim 5, characterized in that, One end of the rotating shaft is provided with a locking hole that corresponds to and communicates with the guide waist hole; The dimensional gauge also includes a locking element, which is inserted into both the guide waist hole and the locking hole.

7. The dimensional gauge for the inner cavity of the inverter chassis according to claim 6, characterized in that, The locking hole is a first threaded hole; the locking member includes a first screw and an abutment block, one end of the first screw is connected to the abutment block, and the other end of the first screw passes through the guide waist hole and the first threaded hole so that the abutment block abuts against the lifting seat.

8. The dimensional gauge for the inner cavity of the inverter chassis according to claim 2, characterized in that, A guide groove is recessed along the length of the first guide rod; the second abutment portion has a through hole, and a first movable block is provided in the through hole, the first movable block being slidably disposed in the guide groove.

9. The dimensional gauge for the inner cavity of the inverter chassis according to claim 8, characterized in that, Each of the second abutting parts is provided with two locking components for locking or releasing the second abutting part; each locking component includes a second moving block, a bolt and a locking part; the second moving block is slidably disposed in the guide groove, the second moving block is provided with a second threaded hole, the bolt passes through the locking part and one end of it is detachably inserted into the second threaded hole, which can drive the locking part to press against the outside of the first guide rod.

10. The dimensional gauge for the inner cavity of the inverter chassis according to claim 9, characterized in that, The locking part is provided with a rubber part.

Images