Microwave anechoic chamber polymorphic integration test hand wheel regulation and control lifting platform

Abstract

The invention discloses a microwave anechoic chamber polymorphic integration test hand wheel regulation and control lifting platform, and relates to the technical field of microwave anechoic chamber test lifting trucks, the microwave anechoic chamber polymorphic integration test hand wheel regulation and control lifting platform comprises a movable base, a lifting moving mechanism and a hand cranking mechanism, the hand cranking mechanism comprises a linkage shaft, a self-locking transmission mechanism rocking handle, a stroke measuring mechanism and an adjustable fixed-point shutdown mechanism, the linkage shaft is connected with the lifting moving mechanism in a matched mode through a self-locking transmission mechanism, and the self-locking transmission mechanism locks the lifting moving mechanism when the rocking handle is static. When the height is adjusted through rotation of the rocking handle, the rocking handle drives the linkage shaft to rotate, the linkage shaft enables the worm to rotate through transmission cooperation of the first steering bevel gear and the second steering bevel gear, the worm drives the worm gear and the winding column to rotate, winding of the lifting rope is achieved, and when the rocking handle is loosened or accidentally slips out of the hand, due to the self-locking effect of the worm gear and the worm, the lifting rope is wound. At the moment, even if the lifting rope is subjected to the gravity effect of the main sliding base, the winding column cannot rotate reversely, and manual operation locking is not needed.

Description

Technical Field

[0001] The invention relates to the technical field of microwave darkroom test lifting vehicles, and in particular to a microwave darkroom polymorphic integrated test hand wheel controlled lifting platform. Background Art

[0002] A microwave darkroom is a special room made of absorbing materials and metal shielding, which is used to simulate a non-reflective electromagnetic environment. It is often used to test the radiation characteristics of antennas, measure reflectivity, etc., to ensure the accuracy and reliability of the test. In microwave darkroom testing, the hand-cranked lifting device is mainly used to carry the sample or test equipment under test, and to lift and lower it as needed during the test.

[0003] The existing microwave darkroom test lifting equipment mainly includes a lifting mechanism and a horizontal adjustment mechanism. The lifting mechanism drives the test equipment or sample to adjust to different heights for testing, and the horizontal adjustment mechanism adjusts the position laterally. When performing the lifting and adjusting, a hand-crank mechanism is used to wind the lifting wire or traction rope, so that the lifting wire or traction rope pulls the lifting mechanism to move. Since the main purpose of the microwave darkroom is to provide a non-reflective electromagnetic environment to accurately measure the radiation characteristics of the antenna, etc., the electronic instrument switch may generate electromagnetic radiation or electromagnetic interference during operation. This interference may affect the electromagnetic field distribution in the microwave darkroom, and then affect the accuracy of the test results. Therefore, it is more reasonable to use a hand-crank mechanism for lifting and lowering control, which is not convenient for electric drive mechanisms to adjust.

[0004] The disadvantages of the existing microwave darkroom test lifting equipment are that: the existing microwave darkroom test lifting equipment can only select a hand-cranked manual operating mechanism for lifting operation due to the test environment requirements, and each time the existing lifting equipment adjusts the lifting height by hand-cranking the hand-cranking mechanism, it is necessary to manually lock the hand-cranking mechanism through a set locking mechanism, and it cannot stop at the adjusted height position independently, which will result in inconvenient operation, and when the test equipment loaded on the lifting equipment is heavy, the operator may accidentally drop the handle during the operation, and once the handle drops, the test equipment will fall directly, which is easy to cause danger; and because the test environment is not convenient for installing too many electronic instruments, the lifting guide rails of the existing lifting equipment can only distribute length scale lines on the lifting guide rails when measuring the lifting height, which is convenient for determining the height position according to the distributed scale lines when operating the lifting, but the lifting guide rails of the existing lifting equipment have a certain height. When the operator adjusts the lifting height, if the adjustment position is high, he needs to look up at the scale line at the higher position, and if the adjustment position is low, he needs to look down at the lower position, resulting in inconvenience in reading and determining the height value during the lifting adjustment process. Summary of the invention

[0005] The purpose of the present invention is to provide a microwave darkroom multi-state integrated test handwheel-controlled lifting platform to solve the technical problem in the prior art that when the microwave darkroom test lifting vehicle is lifted and lowered by a hand-cranked mechanism, the hand-cranked mechanism is not easy to self-lock and requires a separate locking operation, resulting in inconvenient operation.

[0006] The technical problem to be solved by the present invention can be achieved by the following technical solutions:

[0007] The microwave darkroom multi-state integrated test hand wheel control lifting platform comprises a mobile base, a lifting and moving mechanism and a hand crank mechanism, wherein the lifting and moving mechanism and the hand crank mechanism are installed on the mobile base, and the hand crank mechanism is used to drive the lifting and moving mechanism to move; the hand crank mechanism comprises:

[0008] A linkage shaft, a self-locking transmission mechanism and a crank, wherein the linkage shaft is connected with the lifting and moving mechanism through the self-locking transmission mechanism, the crank is used to drive the linkage shaft to rotate, and the self-locking transmission mechanism locks the lifting and moving mechanism when the crank is stationary.

[0009] A stroke measuring mechanism and an adjustable fixed-point stopping mechanism, wherein the end of the linkage shaft away from the crank is connected with the stroke measuring mechanism, the stroke measuring mechanism comprises a measuring slip ring, the stroke measuring mechanism measures the lifting height of the lifting and moving mechanism through the measuring slip ring mark, and the adjustable fixed-point stopping mechanism cooperates with the measuring slip ring of the stroke measuring mechanism.

[0010] As a further solution of the present invention: the lifting and moving mechanism includes a lifting guide rail and a transverse guide rail, the lifting guide rail is fixedly connected to the moving base, the external sliding sleeve of the lifting guide rail is provided with a main slide, the transverse guide rail is horizontally fixedly connected to one side of the main slide, and a load slide is slidably distributed on the transverse guide rail, the lifting guide rail is a hollow structure, and a lifting rope is passed through the inside of the lifting guide rail, one end of the lifting rope passes around the top of the lifting guide rail and is fixedly connected to the main slide, and the other end passes around the bottom of the lifting guide rail and is connected to the hand-cranked mechanism.

[0011] As a further solution of the present invention: the hand-cranked mechanism also includes an installation frame and a winding column, the installation frame is fixedly installed on the mobile base, the linkage shaft is horizontally rotatably connected to the inner bottom of the installation frame, the winding column is horizontally rotatably connected to the top of the installation frame, the winding column and the linkage shaft are connected by a self-locking transmission mechanism, one end of the winding column is connected to the lifting rope, and the installation frame is also provided with a wire arrangement mechanism for arranging the lifting rope.

[0012] As a further solution of the present invention: the self-locking transmission mechanism includes a worm and a worm wheel, the worm is rotatably arranged inside the mounting frame, one end of the worm close to the linkage shaft is coaxially fixedly connected with a first steering bevel gear, a second steering bevel gear meshing with the first steering bevel gear is coaxially fixedly connected to the linkage shaft, the worm wheel is coaxially fixedly connected to the winding column, and the worm wheel meshes with the worm.

[0013] As a further solution of the present invention: the wire arrangement mechanism includes a first screw rod, a screw sleeve and a wire sleeve, the first screw rod is horizontally rotatably connected in the installation frame, and the first screw rod is parallel to the winding column, a transmission belt is cooperated between the first screw rod and the winding column, the screw sleeve is threadedly connected to the first screw rod, and a guide rod is penetrated on one side of the screw sleeve, one end of the guide rod is fixedly connected to the installation frame, the wire sleeve is fixedly connected to the screw sleeve, and the lifting rope passes through the wire sleeve.

[0014] As a further solution of the present invention: the stroke measuring mechanism includes a second screw and a first measuring rod, the second screw is coaxially fixedly connected to the linkage shaft, the measuring slip ring is threadedly connected to the second screw, the first measuring rod passes through one side of the measuring slip ring, and the first measuring rod is fixedly connected to the outer wall of the mounting frame, and the first measuring rod is parallel to the second screw.

[0015] As a further solution of the present invention: the adjustable fixed-point stopping mechanism includes a second measuring ruler rod and an elastic clamp, the second measuring ruler rod is arranged in parallel on one side of the first measuring ruler rod, the elastic clamp is provided in multiple groups and is slidably distributed on the second measuring ruler rod, the measuring slip ring is provided with a chamfered surface on the side close to the second measuring ruler rod, and the measuring slip ring is also provided with a slot, the chamfered surface and the slot are both matched with the elastic clamp, and an unlocking mechanism is provided between the second measuring ruler rod and the crank handle.

[0016] As a further solution of the present invention: each group of the elastic clamps includes a sliding sleeve and a bolt, the sliding sleeve is arranged on the second measuring ruler rod, the sliding sleeve is fixedly connected to a guide sleeve, the bolt slides through the guide sleeve, a first limit spring is connected between the bolt and the guide sleeve, and a fastening bolt is threadedly connected to one side of the sliding sleeve.

[0017] As a further solution of the present invention: the unlocking mechanism includes a U-shaped slide and a linkage ring, connecting slide grooves are horizontally provided on the outer walls of both sides of the mounting frame, two ends of the U-shaped slide are respectively slidably connected to the corresponding connecting slide grooves, and the two ends of the U-shaped slide are also respectively connected to the corresponding connecting slide grooves with a second limit spring, the second measuring ruler rod is fixedly connected to one end of the U-shaped slide, the end of the linkage shaft close to the crank handle passes through the mounting frame and is coaxially fixedly connected with a square butt joint, the crank handle is provided with a square slide groove that slidably cooperates with the square butt joint, and an adjustment spring is connected between the square butt joint and the square slide groove, the linkage ring is sleeved on the outside of the square butt joint, and a telescopic connecting rod is connected between the linkage ring and the outer wall of the mounting frame, the linkage ring cooperates with the crank handle, one side of the linkage ring is movably connected to a linkage rod through a hinge, and the end of the linkage rod is movably connected to the U-shaped slide through a hinge.

[0018] As a further solution of the present invention: the side of the main slide away from the transverse guide rail is fixedly connected to a cross bar, and a counterweight block is provided on the cross bar, and a through hole is opened on the counterweight block.

[0019] Beneficial effects of the present invention:

[0020] 1. When the height is adjusted by rotating the crank handle, the crank handle drives the linkage shaft to rotate, and the linkage shaft drives the worm to rotate through the first steering bevel gear and the second steering bevel gear, and the worm drives the worm wheel and the winding column to rotate, so as to realize the winding of the lifting rope. That is, the worm drives the worm wheel as an active component to rotate. When the crank handle is released or accidentally slips out of the hand, due to the self-locking effect of the worm wheel, even if the lifting rope is affected by the gravity of the main slide seat, the winding column cannot be reversed, and there is no need for manual locking. When the height needs to be adjusted again, the crank handle is directly operated without unlocking, thereby improving the convenience and safety of operation.

[0021] 2. When the crank handle of the present invention is rotated for lifting adjustment, the crank handle drives the arranged linkage shaft to rotate, and the linkage shaft drives the coaxially connected second screw to rotate, and the measuring slip ring threadedly connected to the second screw moves laterally along the laterally distributed first measuring ruler rod. The length of the first measuring ruler rod is less than the length of the lifting guide rail, and the distance scale lines thereon are converted in proportion. Therefore, the position where the measuring slip ring stays on the first measuring ruler rod corresponds to the corresponding lifting height, which is convenient for the operator to read and facilitate the lifting position adjustment.

[0022] 3. When the present invention needs to conduct measurement experiments on multiple height positions, multiple sleeves are directly distributed in advance at the corresponding positions of the second measuring ruler rod, and then the sleeves are raised and lowered by operating the crank handle. During this process, the measuring slip ring passes through the positions of the sleeves at each position in turn. Each time it passes through a position where the sleeve is located, the measuring slip ring is squeezed with the corresponding bolt, and finally clamped together, and automatically positioned and stopped. After each height position test is completed, the crank handle is directly pressed to make the corresponding bolt of the crank handle linkage detach from the measuring slip ring, and then the crank handle is continued to be rotated to facilitate the docking of the measuring slip ring with the bolt corresponding to the sleeve at the next position. In this way, the crank handle can be directly operated when the measuring point is set, and there is no need to unlock, position and fix again after each height position measurement, so as to avoid too long interval time affecting the test effect.

[0023] 4. The present invention evenly arranges the lifting rope on the winding column through the wire arrangement mechanism, so as to ensure that the length of the lifting rope wound by the winding column for each rotation is the same. In this way, the lifting height of the main slide can be determined to be constant, which is convenient for corresponding to the displacement of the measuring slip ring, thereby ensuring that the value read by the operator through the cooperation of the measuring slip ring and the first measuring ruler is accurate.

[0024] 5. When the present invention performs different tests in a microwave darkroom, different equipment and instruments can be mounted on the loading slide, and then the crank handle can be rotated as needed to make the winding column wind up or release the lifting rope, so that the main slide drives the assembled equipment and instruments to adjust the height, and complete the tests at different height positions. The lifting vehicle can also be moved to the specified position as needed, so that a variety of test functions are integrated on the lifting platform, and a variety of modal tests can be performed. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a partial structural schematic diagram of the cooperative arrangement of the rocker handle and the second screw rod in the present invention;

[0028] Figure 3 yes Figure 2 A schematic diagram of the local enlarged structure at point A in the middle;

[0029] Figure 4 It is a schematic diagram of a top view of the structure of the rocker handle and the second screw rod in the present invention;

[0030] Figure 5 yes Figure 4 A schematic diagram of the local enlarged structure at B in the middle;

[0031] Figure 6 yes Figure 2A schematic diagram of the local enlarged structure at C in the middle;

[0032] Figure 7 It is a left-side structural schematic diagram of the winding column and the first screw rod in the present invention;

[0033] Figure 8 It is a schematic diagram of the three-dimensional structure of the main slide seat and the lifting guide rail in the present invention;

[0034] Fig. 9 It is a schematic diagram of a top view cross-sectional structure of the main slide seat and the lifting guide rail in the present invention;

[0035] Fig.10 It is a left-view cross-sectional structural schematic diagram of the main slide seat and the lifting guide rail in the present invention.

[0036] In the figure: 1, mobile base; 2, main slide; 3, lifting guide rail; 4, transverse guide rail; 5, cross bar; 6, counterweight block; 7, load slide; 8, lifting rope; 9, mounting frame; 10, crank handle; 11, worm gear; 12, winding column; 13, worm; 14, second screw; 15, first measuring ruler rod; 16, second measuring ruler rod; 17, measuring slip ring; 18, sliding sleeve; 19, fastening bolt; 20, clamp bolt; 21, linkage shaft; 22, second Steering bevel gear; 23. First steering bevel gear; 24. Linkage ring; 25. Telescopic connecting rod; 26. Linkage rod; 27. U-shaped slide; 28. Connecting slide groove; 29. ​​Second limit spring; 30. Square butt joint; 31. Square slide groove; 32. Adjustment spring; 33. Guide sleeve; 34. First limit spring; 35. Beveled surface; 36. Slot; 37. First screw; 38. Screw sleeve; 39. Guide rod; 40. Wire sleeve; 41. Transmission belt. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] like Figure 1-Figure 10 As shown, the microwave darkroom multi-state integrated test hand wheel control lifting platform includes a mobile base 1, a lifting and moving mechanism and a hand crank mechanism, the lifting and moving mechanism and the hand crank mechanism are installed on the mobile base 1, and the hand crank mechanism is used to drive the lifting and moving mechanism to move;

[0039] The hand-cranked mechanism includes a linkage shaft 21, a self-locking transmission mechanism, a crank 10, a stroke measuring mechanism and an adjustable fixed-point stopping mechanism. The linkage shaft 21 is connected to the lifting and moving mechanism through the self-locking transmission mechanism. The crank 10 is used to drive the linkage shaft 21 to rotate. The end of the linkage shaft 21 away from the crank 10 is connected to the stroke measuring mechanism. The self-locking transmission mechanism locks the lifting and moving mechanism when the crank 10 is stationary to achieve a self-locking function without the need for a separate locking operation. The stroke measuring mechanism includes a measuring slip ring 17. The stroke measuring mechanism measures the lifting height of the lifting and moving mechanism by marking the measuring slip ring 17. The adjustable fixed-point stopping mechanism cooperates with the measuring slip ring 17 of the stroke measuring mechanism. The adjustable fixed-point stopping mechanism is used to stop the measuring slip ring 17 at the corresponding stroke position, so that the linkage shaft 21 cannot continue to rotate. In this way, the crank 10 can be stopped in time and cannot be controlled to rotate. That is, after the several points that need to be stopped are adjusted in advance by the adjustable fixed-point stopping mechanism, the crank 10 is directly rotated and operated, whenever the measuring slip ring 17 moves to the corresponding position of the stroke measuring mechanism.

[0040] In some specific embodiments, the lifting and moving mechanism includes a lifting guide rail 3 and a transverse guide rail 4. The lifting guide rail 3 is vertically fixedly connected to the mobile base 1 through a mounting seat. The outer sliding sleeve of the lifting guide rail 3 is provided with a main slide 2. The main slide 2 can slide and lift along the lifting guide rail 3, wherein the main slide 2 clamps the lifting guide rail 3 through rollers distributed on the inner walls on both sides to stably perform lifting and lowering movements; the transverse guide rail 4 is horizontally fixedly connected to one side of the main slide 2, and a loading slide 7 is slidably distributed on the transverse guide rail 4. The loading slide 7 can slide laterally along the transverse guide rail 4 to adjust the transverse position, and the length scale line can be marked on the transverse guide rail 4 to facilitate determination of the adjustment of the transverse distance position, and when performing antenna testing, the antenna can be fixedly installed on the loading slide 7, and then rely on the main slide 2 to move longitudinally along the lifting guide rail 3 to different heights, which is convenient for simulating the antenna. Radiation characteristics under different angles; detection equipment can also be installed. After adjusting to the applicable height position, the entire lifting platform relies on the mobile base 1 to detect signal leakage at different positions in the microwave darkroom; a load-bearing sample can also be installed for reflectivity measurement, and the reflectivity at different incident angles is measured by adjusting the height of the sample; in summary, the lifting platform of the present application can perform a variety of tests to achieve multifunctional operations; the lifting guide rail 3 is a hollow structure, and a lifting rope 8 is passed through the inside of the lifting guide rail 3, and the lifting rope 8 can be replaced by a steel wire. One end of the lifting rope 8 bypasses the top of the lifting guide rail 3 and is fixedly connected to the main slide 2, and the other end bypasses the bottom of the lifting guide rail 3 and is connected to the hand-cranked mechanism, and guide wheels matching the lifting rope 8 are distributed on the top and bottom of the lifting guide rail 3 and the mobile base 1, which facilitates the sliding of the lifting wire through the corresponding corner position.

[0041] In some specific embodiments, the hand-cranked mechanism also includes an installation frame 9 and a winding column 12. The installation frame 9 is fixedly installed on the mobile base 1 through a support seat. The linkage shaft 21 is horizontally rotatably connected to the inner bottom of the installation frame 9. The winding column 12 is horizontally rotatably connected to the top of the installation frame 9. The winding column 12 and the linkage shaft 21 are connected by a self-locking transmission mechanism. One end of the winding column 12 is connected to the lifting rope 8. The installation frame 9 is also provided with a wire arrangement mechanism for arranging the lifting rope 8.

[0042] Among them, combined Figure 2 and Figure 4 As shown, the self-locking transmission mechanism includes a worm 13 and a worm wheel 11. The worm 13 is rotatably arranged inside the installation frame 9, and the worm 13 is vertically distributed with the linkage shaft 21. The worm 13 is specifically connected as follows: a metal block is fixedly installed on the inner wall of the installation frame 9, one end of the worm 13 is rotatably connected to the metal block, one end of the worm 13 close to the linkage shaft 21 is coaxially fixedly connected with a first steering bevel gear 23, and a second steering bevel gear 22 meshing with the first steering bevel gear 23 is coaxially fixedly connected to the linkage shaft 21, the worm wheel 11 is coaxially fixedly connected with the winding column 12, and the worm wheel 11 is meshed with the worm 13. It should be noted here that the unfolded helix angle of the worm 13 is smaller than the friction angle of contact between the worm wheel 11 and the worm 13, that is, the transmission between the worm wheel 11 and the worm 13 has a self-locking property. , only the worm 13 is used as the active component to drive the worm wheel 11 to rotate, and the worm wheel 11 cannot be used as the active component to drive the worm 13 to rotate. In this way, the operator drives the linkage shaft 21 to rotate through the crank handle 10, and the linkage shaft 21 cooperates with the first steering bevel gear 23 and the second steering bevel gear 22 to make the worm 13 rotate, and the worm 13 drives the worm wheel 11 to rotate, so that the winding column 12 rotates to wind or release the lifting rope 8, so that the lifting rope 8 can drive the main slide 2 to rise and fall. When the operator releases the crank handle 10, even if the main slide 2 relies on gravity to act on the lifting rope 8, causing the lifting rope 8 to pull the winding column 12, the worm wheel 11 cannot drive the worm 13 to rotate, and this situation will be self-locking, without the need for manual locking, to prevent accidental slipping and falling.

[0043] In some specific embodiments, such as Figure 6As shown, the wire arrangement mechanism includes a first screw rod 37, a screw sleeve 38 and a wire sleeve 40. The first screw rod 37 is horizontally rotatably connected in the installation frame 9, and the first screw rod 37 is parallel to the winding column 12. A transmission belt 41 is arranged between the first screw rod 37 and the winding column 12. Specifically, a transmission wheel can be coaxially fixedly installed on the ends of the first screw rod 37 and the winding column 12 that are aligned with each other, and then the transmission belt 41 is sleeved between the two transmission wheels. The screw sleeve 38 is threadedly connected to the first screw rod 37, and a guide rod 39 is penetrated on one side of the screw sleeve 38. One end of the guide rod 39 is fixedly connected to the installation frame 9, and the screw sleeve 38 can slide relative to the guide rod 39. The wire sleeve 40 is fixedly connected to the screw sleeve 38 through a bracket, and the lifting rope 8 penetrates the wire sleeve 40. When the winding column 12 rotates, it drives the first screw rod 37 to rotate through the transmission belt 41, and the first screw rod 37 causes the screw sleeve 38 to move linearly, so that the screw sleeve 38 drives the wire sleeve 40 to move synchronously, and the wire sleeve 40 is fixedly connected to the screw sleeve 38 through a bracket, and the lifting rope 8 passes through ... The sleeve 40 then pulls the lifting rope 8 to be laterally wound and distributed along the rotating winding column 12. It should be noted that a first screw 37 with a suitable pitch is selected to ensure that after each rotation of the winding column 12 and the first screw 37 is driven to rotate, the displacement of the sleeve 38 and the sleeve 40 is exactly the cross-sectional width of the lifting rope 8. In this way, the lifting rope 8 can be evenly and tightly distributed laterally on the winding column 12. In this way, the lifting rope 8 is also wound with the same length every time the winding column 12 rotates one circle. It should also be noted that in this process, the winding column 12 winds the lifting rope 8 in a single layer. The first screw 37 can also be set as a reciprocating screw. In this way, when the first screw 37 rotates continuously, the lifting rope 8 can be reciprocated back and forth along the winding column 12 in multiple layers, and each layer is evenly arranged. When multiple layers are evenly distributed, each layer has a corresponding distance scale line converted according to the proportion on the first measuring ruler 15.

[0044] In some specific embodiments, in combination Figures 2 to 4As shown, the stroke measuring mechanism includes a second screw rod 14 and a first measuring ruler rod 15. The second screw rod 14 is coaxially fixedly connected to the linkage shaft 21, and the two rotate synchronously. The second screw rod 14 is outside the mounting frame 9. The measuring slip ring 17 is threadedly connected to the second screw rod 14. The first measuring ruler rod 15 passes through one side of the measuring slip ring 17, and the first measuring ruler rod 15 is fixedly connected to the outer wall of the mounting frame 9. The first measuring ruler rod 15 is parallel to the second screw rod 14. Here, the first measuring ruler rod 15 is marked with a distance scale line. The distance scale line is not a conventional length scale line, but is parallel to the main slide 2 sliding on the lifting guide rail 3. The corresponding height position is correspondingly distributed, and there is a certain ratio conversion between the two, which needs to be determined according to the pitch of the second screw 14, that is, the second screw 14 rotates one circle, and the measuring slip ring 17 moves horizontally by a corresponding distance. The smaller the pitch, the smaller the unit horizontal movement distance. When the crank 10 drives the linkage shaft 21 to rotate, the linkage shaft 21 drives the second screw 14 to rotate, thereby causing the measuring slip ring 17 to slide along the first measuring ruler 15, and also drives the winding column 12 to rotate a corresponding number of circles. In this process, the length of the lifting rope 8 wound is the number of rotations multiplied by the length of the lifting rope 8 wound in each circle, because the cable arrangement machine Due to the existence of the structure, the lifting rope 8 can be evenly arranged on the winding column 12 in the horizontal direction, thereby ensuring that in the case of a single-layer winding of the lifting rope 8, the length of each winding of the lifting rope 8 is equal. In this way, when the measuring slip ring 17 slides to the corresponding numerical position of the first measuring ruler 15, the lifting rope 8 of the corresponding length is just wound, and the lifting rope 8 just pulls the main slide 2 to the corresponding height position, that is, the corresponding numerical position of the measuring slip ring 17 on the first measuring ruler 15 corresponds to the height value of the main slide 2. The operator can directly determine the raised height by the scale value aligned with the measuring slip ring 17 on the first measuring ruler 15. In order to avoid the first measuring ruler 15 and the second screw 14 being too long and inconvenient to observe, the second screw 14 with a smaller pitch can be selected, so that the second screw 14 can drive the measuring slip ring 17 to move a smaller stroke for each rotation of the second screw 14, and the length of the wound lifting rope 8 is unchanged, so the lifting height is also unchanged, so that the movement stroke of the measuring slip ring 17 can be shorter, and the distance scale lines on the first measuring ruler 15 are obtained by reducing the lifting stroke on the lifting guide rail 3 according to the corresponding proportion, so that the operator can directly read and observe, without distributing the scale lines on the excessively long lifting guide rail 3.

[0045] In some specific embodiments, in combination Figures 2 to 5As shown, the adjustable fixed-point stopping mechanism includes a second measuring ruler rod 16 and an elastic clamp. The second measuring ruler rod 16 is arranged in parallel on one side of the first measuring ruler rod 15. It should be noted here that the distance scale lines distributed on the second measuring ruler rod 16 are aligned and the same as the distance scale lines on the first measuring ruler rod 15. There are multiple groups of elastic clamps, which are slidably distributed on the second measuring ruler rod 16. A chamfered surface 35 is provided on one side of the measuring slip ring 17 close to the second measuring ruler rod 16, and a slot 36 is also provided on the measuring slip ring 17. The chamfered surface 35 and the slot 36 are both matched with the elastic clamp. An unlocking mechanism is provided between the second measuring ruler rod 16 and the crank handle 10.

[0046] Each set of elastic clamps includes a sleeve 18 and a bolt 20. The sleeve 18 is slidably mounted on the second measuring ruler 16. A guide sleeve 33 is fixedly connected to the sleeve 18. The bolt 20 slides through the guide sleeve 33, and the bolt 20 is perpendicular to the first measuring ruler 15. A compressible first limit spring 34 is connected between the bolt 20 and the guide sleeve 33. A fastening bolt 19 is threadedly connected to one side of the sleeve 18, and the fastening bolt 19 penetrates the side wall of the sleeve 18 and can contact the second measuring ruler 16. An anti-slip layer is distributed on the outer wall of the second measuring ruler 16 that cooperates with the fastening bolt 19. When antenna testing is required, That is, if the test antenna needs to be moved to different height positions in sequence for testing, a corresponding number of sliding sleeves 18 can be slidably distributed along the second measuring ruler 16, so that the sliding sleeves 18 slide to the corresponding positions of the second measuring ruler 16 in sequence, that is, each position corresponds to the corresponding height position of the lifting guide rail 3, and then they are tightened by tightening bolts 19 respectively, and then the crank 10 is turned, and the crank 10 drives the winding column 12 to wind the lifting rope 8, thereby pulling the main slide 2 to slide and rise along the lifting guide rail 3. When the main slide 2 is lifted to the first height position with the test antenna, the measuring slip ring 17 moves to the first sliding sleeve 18 corresponding position, in this process, the end of the corresponding latch 20 on the current sliding sleeve 18 is first squeezed onto the beveled surface 35, due to the squeezing effect, the latch 20 slides relative to the guide sleeve 33, and compresses the first limit spring 34. When the measuring slip ring 17 is aligned with the corresponding size position, the end of the latch 20 is just aligned with the slot 36, and then the latch 20 is clamped into the slot 36 by the rebound force of the first limit spring 34, automatically making the measuring slip ring 17 unable to move forward, so that the crank handle 10 can no longer rotate at this time, and the main slide 2 can no longer rise, so it stops in time. After the current stopped height test is completed, directly Unlock the latch 20 corresponding to the current position through the unlocking mechanism, and then continue to rotate the crank handle 10. After the measuring slip ring 17 moves to the next position, it will also rely on the corresponding latch 20 to automatically lock and stop, that is, by distributing a plurality of sleeves 18 and corresponding latches 20 on the second measuring ruler rod 16, there is no need to stop after each height position is tested to align the height of the next position. Because after each height position is tested, the machine stops to adjust and align the next height position, and then the position is positioned and fixed, which easily causes a long interval between the tests of different height positions, resulting in insufficient test results.

[0047] In some specific embodiments, such as Figure 4As shown, the unlocking mechanism includes a U-shaped slide 27 and a linkage ring 24. Connecting grooves 28 are horizontally opened on the outer walls of both sides of the installation frame 9. The two ends of the U-shaped slide 27 are respectively slidably connected with the corresponding connecting grooves 28, and the two ends of the U-shaped slide 27 are also respectively connected with the corresponding connecting grooves 28. A compressible second limit spring 29 is connected between the two ends of the U-shaped slide 27 and the corresponding connecting grooves 28. The specification of the second limit spring 29 is larger than that of the first limit spring 34. Under the same force conditions, the first limit spring 34 is compressed and deformed first, and when the latch 20 and the chamfered surface 35 are squeezed, only the first limit spring 34 is deformed, and the second limit spring 29 is not deformed. The second measuring ruler rod 16 is fixedly connected to one end of the U-shaped slide 27, and the end of the linkage shaft 21 close to the crank 10 passes through the installation frame 9, and is coaxially fixedly connected with a square docking joint 30, and the crank 10 is provided with a square docking joint The square slide groove 31 of 30 is slidably matched, the square joint 30 is inserted in the square slide groove 31, and a compressible adjustment spring 32 is connected between the square joint 30 and the square slide groove 31, the linkage ring 24 is sleeved on the outside of the square joint 30, and a telescopic connecting rod 25 is connected between the linkage ring 24 and the outer wall of the installation frame 9, the telescopic connecting rod 25 exists in pairs, and the telescopic connecting rod 25 is in an extended state in the initial state. It should be noted that there is a gap between the inner circle of the linkage ring 24 and the square joint 30 to prevent the square joint 30 from rubbing against the linkage ring 24, and the linkage ring 24 cooperates with the crank 10, and the end of the crank 10 that is sleeved with the square joint 30 is wider and can contact the linkage ring 24, and one side of the linkage ring 24 is movably connected to a linkage rod 26 through a hinge, and the end of the linkage rod 26 is movably connected to a U-shaped slide 27 through a hinge.

[0048] When the crank 10 is rotated normally, the crank 10 is directly grasped and rotated. Since the square joint 30 and the square slide groove 31 are matched and docked, the crank 10 can drive the linkage shaft 21 to rotate. When it is necessary to separate the corresponding position bolt 20 from the slot 36 on the measuring slip ring 17, the hand grasping the crank 10 presses once, and the crank 10 slides relative to the square joint 30 and compresses the adjustment spring 32. During this process, the end of the crank 10 squeezes the linkage ring 24, and the linkage ring 24 moves close to the installation frame 9 by means of the telescopic connecting rod 25. Then, the linkage ring 24 pushes the U-shaped slide 27 through the linkage rod 26 to slide along the connecting slide groove 28 and compresses the second The limiting spring 29 is released and moves away from the first measuring ruler rod 15, so that the U-shaped slide 27 will drive the distributed latch 20 away from the first measuring ruler rod 15 through the second measuring ruler rod 16, and the latch 20 inserted in the slot 36 will be separated, that is, unlocked. At this time, the operator can continue to rotate the crank 10 while pressing the crank 10, so that the measuring slip ring 17 moves to the next position. Before the movement is reached, the pressing effect is removed, and the crank 10 is kept rotating, so that the measuring slip ring 17 can be fixed-point docked with the latch 20 at the next position. This process can be achieved by operating the crank 10, which is convenient and effective, thereby improving operating efficiency.

[0049] In some specific implementation schemes, since the transverse guide rail 4 with the loading slide 7 is arranged on one side of the main slide 2, when the equipment installed on the loading slide 7 is too heavy, in order to ensure balance, a cross bar 5 is fixedly connected to the side of the main slide 2 away from the transverse guide rail 4, and a counterweight block 6 is arranged on the cross bar 5. The counterweight block 6 is provided with a through hole. When counterweight balancing is required, a corresponding number of counterweight blocks 6 are mounted on the cross bar 5.

[0050] In order to facilitate the understanding of the embodiments of this solution by those skilled in the art, the working principle of this solution is briefly described in combination with specific application scenarios:

[0051] First, according to the test type, the corresponding equipment or detection equipment is installed on the loading slide 7, and the loading slide 7 is slid along the transverse guide rail 4 to adjust the transverse position of the equipment, and then the crank 10 is turned. The crank 10 drives the linkage shaft 21 to rotate, and the linkage shaft 21 cooperates with the first steering bevel gear 23 and the second steering bevel gear 22 to transmit the transmission, so that the worm 13 rotates, and the worm 13 drives the worm wheel 11 to rotate, so that the winding column 12 rotates to wind or release the lifting rope 8, so that the lifting rope 8 can drive the main slide 2 to rise and fall, so as to achieve height adjustment. When the operator releases the crank 10, even if the main slide 2 relies on gravity to act on the lifting rope 8, causing the lifting rope 8 to pull the winding column 12, but because the worm wheel 11 cannot drive the worm 13 to rotate, this situation will be self-locking, and there is no need for manual locking to prevent accidental slipping and falling.

[0052] When the crank 10 drives the linkage shaft 21 to rotate, the linkage shaft 21 drives the second screw 14 to rotate, thereby causing the measuring slip ring 17 to slide along the first measuring ruler 15, and also driving the winding column 12 to rotate a corresponding number of circles. The length of the lifting rope 8 wound in this process is the number of circles multiplied by the length of the lifting rope 8 wound in each circle. Because during the rotation of the winding column 12, it drives the first screw 37 to rotate through the transmission belt 41, and the first screw 37 causes the screw sleeve 38 to move linearly, so that the screw sleeve 38 drives the wire The sleeve 40 moves synchronously, and the wire sleeve 40 pulls the lifting rope 8 to be wound and distributed laterally along the rotating winding column 12. It should be noted that the first screw 37 with a suitable pitch is selected to ensure that after the winding column 12 rotates one circle and drives the first screw 37 to rotate, the displacement of the screw sleeve 38 and the wire sleeve 40 is exactly the cross-sectional width of the lifting rope 8, so that the lifting rope 8 can be uniformly and tightly distributed laterally on the winding column 12, and the lifting rope 8 wound by the winding column 12 is equal in length after each rotation of the winding column 12.

[0053] Then, the lifting rope 8 can be evenly arranged on the winding column 12 in the horizontal direction, thereby ensuring that in the case of a single-layer winding of the lifting rope 8, the length of each winding of the lifting rope 8 is equal. In this way, when the measuring slip ring 17 slides to the corresponding numerical position of the first measuring ruler 15, the lifting rope 8 of the corresponding length is just wound, and the lifting rope 8 just pulls the main slide 2 to the corresponding height position, that is, the corresponding numerical position of the measuring slip ring 17 on the first measuring ruler 15 corresponds to the height value of the main slide 2. The operator can directly determine the height position of the lifting by the scale value aligned with the measuring slip ring 17 on the first measuring ruler 15. In order to avoid the first measuring ruler 15 and the second screw 14 being too long and inconvenient to observe, the second screw 14 with a smaller pitch can be selected, so that the second screw 14 can drive the measuring slip ring 17 to move a smaller stroke for each rotation of the second screw 14, and the length of the wound lifting rope 8 is unchanged, so the lifting height is also unchanged, so that the movement stroke of the measuring slip ring 17 is shorter, and the distance scale lines on the first measuring ruler 15 are obtained by reducing the lifting stroke on the lifting guide rail 3 according to the corresponding proportion, so that it is convenient for the operator to directly read and observe, and there is no need to distribute the scale lines on the excessively long lifting guide rail 3.

[0054] When conducting antenna testing, that is, it is necessary to move the test antenna to different height positions in sequence for testing, a corresponding number of sliding sleeves 18 can be slidably distributed along the second measuring ruler 16, so that the sliding sleeves 18 slide to the corresponding positions of the second measuring ruler 16 in sequence, that is, each position corresponds to the corresponding height position of the lifting guide rail 3, and then they are tightened by fastening bolts 19 respectively, and then the crank 10 is turned, and the crank 10 drives the winding column 12 to wind the lifting rope 8, thereby pulling the main slide 2 to slide and rise along the lifting guide rail 3. When the main slide 2 is lifted to the first height position with the test antenna, the measuring slip ring 17 moves to the position corresponding to the first sliding sleeve 18. In this process, the corresponding end of the clamping bolt 20 on the current sliding sleeve 18 is first squeezed onto the beveled surface 35. Due to the squeezing effect, the clamping bolt 20 slides relative to the guide sleeve 33 and compresses the first limit spring 34. When the measuring slip ring 17 is aligned with the corresponding size position, the end of the clamping bolt 20 is just aligned with the clamping groove 36, and then the clamping bolt 20 relies on the first limit spring 34 to press the clamping bolt 20 onto the beveled surface 35. The spring 34 is forced into the slot 36 to automatically stop the measuring slip ring 17 from moving forward. The crank handle 10 is also unable to rotate and the main slide 2 is unable to rise, so that it stops in time. After the height test of the current stop is completed, the latch 20 corresponding to the current position is unlocked directly through the unlocking mechanism. The specific unlocking process is as follows: by pressing the crank handle 10 with the hand holding it, the crank handle 10 slides relative to the square docking joint 30 and compresses the adjusting spring 32. During this process, the end of the crank handle 10 squeezes the linkage ring 24, and the linkage ring 24 moves close to the mounting frame 9 by means of the telescopic connecting rod 25. Then, the linkage ring 24 pushes the U-shaped slide 27 to slide along the connecting slot 28 through the linkage rod 26, and compresses the second limit spring 29, and moves away from the first measuring ruler rod 15. In this way, the U-shaped slide 27 drives the distributed latches 20 away from the first measuring ruler rod 15 through the second measuring ruler rod 16, and then the latches 20 inserted in the slot 36 are separated, that is, unlocking is achieved.

[0055] Then the operator can continue to rotate the crank 10 while pressing the crank 10, so that the measuring slip ring 17 moves to the next position. The pressing effect can be removed before the movement is reached, and the crank 10 can be kept rotating, so that the measuring slip ring 17 can be fixed-point docked with the bolt 20 at the next position. This process is repeated to achieve multiple point tests. In this process, it is only necessary to operate the crank 10, which is convenient and effective, and improves operating efficiency. There is no need to stop after each height position is tested to align the height of the next position. Because after each height position is tested, the operator stops to adjust and align the next height position, and then positions the position, which easily causes a long interval between the tests of different height positions, resulting in insufficient test results.

[0056] Several embodiments of the present invention are described in detail above, but the embodiments of the present invention are not limited thereto and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A hand-wheel controlled lifting platform for multi-state integrated testing in a microwave darkroom, comprising a mobile base (1), a lifting and moving mechanism and a hand-cranking mechanism, wherein the lifting and moving mechanism and the hand-cranking mechanism are installed on the mobile base (1), and the hand-cranking mechanism is used to drive the lifting and moving mechanism to move; characterized in that: The hand-crank mechanism comprises: A linkage shaft (21), a self-locking transmission mechanism and a crank (10), wherein the linkage shaft (21) is connected to the lifting and moving mechanism through the self-locking transmission mechanism, the crank (10) is used to drive the linkage shaft (21) to rotate, and the self-locking transmission mechanism locks the lifting and moving mechanism when the crank (10) is stationary. A stroke measuring mechanism and an adjustable fixed-point stopping mechanism, wherein one end of the linkage shaft (21) away from the crank handle (10) is connected to the stroke measuring mechanism in cooperation, the stroke measuring mechanism comprises a measuring slip ring (17), the stroke measuring mechanism measures the lifting height of the lifting and moving mechanism by marking the measuring slip ring (17), and the adjustable fixed-point stopping mechanism cooperates with the measuring slip ring (17) of the stroke measuring mechanism.

2. The microwave darkroom multi-state integrated test hand wheel control lifting platform according to claim 1 is characterized in that: The lifting and moving mechanism comprises a lifting guide rail (3) and a transverse guide rail (4); the lifting guide rail (3) is fixedly connected to the moving base (1); a main slide seat (2) is provided on the outer sliding sleeve of the lifting guide rail (3); the transverse guide rail (4) is horizontally fixedly connected to one side of the main slide seat (2); and a load slide seat (7) is slidably distributed on the transverse guide rail (4); the lifting guide rail (3) is a hollow structure, and a lifting rope (8) is passed through the inside of the lifting guide rail (3); one end of the lifting rope (8) passes around the top of the lifting guide rail (3) and is fixedly connected to the main slide seat (2); the other end passes around the bottom of the lifting guide rail (3) and is connected to the hand-cranked mechanism.

3. The microwave darkroom multi-state integrated test hand wheel control lifting platform according to claim 2 is characterized in that: The hand-cranked mechanism further comprises a mounting frame (9) and a winding column (12); the mounting frame (9) is fixedly mounted on the mobile base (1); the linkage shaft (21) is horizontally rotatably connected to the inner bottom of the mounting frame (9); the winding column (12) is horizontally rotatably connected to the inner top of the mounting frame (9); the winding column (12) and the linkage shaft (21) are connected via a self-locking transmission mechanism; one end of the winding column (12) is connected to the lifting rope (8); and a wire arrangement mechanism for arranging the lifting rope (8) is also provided on the mounting frame (9).

4. The microwave darkroom multi-state integrated test hand wheel control lifting platform according to claim 3 is characterized in that: The self-locking transmission mechanism comprises a worm (13) and a worm wheel (11); the worm (13) is rotatably arranged inside the mounting frame (9); one end of the worm (13) close to the linkage shaft (21) is coaxially fixedly connected to a first steering bevel gear (23); a second steering bevel gear (22) meshing with the first steering bevel gear (23) is coaxially fixedly connected to the linkage shaft (21); the worm wheel (11) is coaxially fixedly connected to the winding column (12), and the worm wheel (11) meshes with the worm (13).

5. The microwave darkroom multi-state integrated test hand wheel control lifting platform according to claim 3 is characterized in that: The cable arrangement mechanism comprises a first screw rod (37), a screw sleeve (38) and a wire sleeve (40); the first screw rod (37) is horizontally rotatably connected in the installation frame (9), and the first screw rod (37) is parallel to the winding column (12); a transmission belt (41) is arranged between the first screw rod (37) and the winding column (12); the screw sleeve (38) is threadedly connected to the first screw rod (37), and a guide rod (39) is arranged on one side of the screw sleeve (38); one end of the guide rod (39) is fixedly connected to the installation frame (9); the wire sleeve (40) is fixedly connected to the screw sleeve (38), and the lifting rope (8) passes through the wire sleeve (40).

6. The microwave darkroom multi-state integrated test hand wheel control lifting platform according to claim 2, characterized in that: The stroke measuring mechanism comprises a second screw rod (14) and a first measuring ruler rod (15); the second screw rod (14) is coaxially fixedly connected to the linkage shaft (21); the measuring slip ring (17) is threadedly connected to the second screw rod (14); the first measuring ruler rod (15) passes through one side of the measuring slip ring (17); the first measuring ruler rod (15) is fixedly connected to the outer wall of the mounting frame (9); and the first measuring ruler rod (15) is parallel to the second screw rod (14).

7. The hand wheel controlled lifting platform for multi-state integrated testing in a microwave darkroom according to claim 6 is characterized in that: The adjustable fixed-point stopping mechanism comprises a second measuring ruler (16) and an elastic clamp, wherein the second measuring ruler (16) is arranged in parallel on one side of the first measuring ruler (15), the elastic clamp is provided in multiple groups and is slidably distributed on the second measuring ruler (16), a chamfer (35) is provided on one side of the measuring slip ring (17) close to the second measuring ruler (16), and a clamping groove (36) is also provided on the measuring slip ring (17), the chamfer (35) and the clamping groove (36) both cooperate with the elastic clamp, and an unlocking mechanism is provided between the second measuring ruler (16) and the crank (10).

8. The hand wheel controlled lifting platform for multi-state integrated testing in a microwave darkroom according to claim 7 is characterized in that: Each group of the elastic clamping parts comprises a sliding sleeve (18) and a clamping bolt (20); the sliding sleeve (18) is slidably mounted on the second measuring ruler rod (16); a guide sleeve (33) is fixedly connected to the sliding sleeve (18); the clamping bolt (20) slides through the guide sleeve (33); a first limit spring (34) is connected between the clamping bolt (20) and the guide sleeve (33); and a fastening bolt (19) is threadedly connected to one side of the sliding sleeve (18).

9. The hand wheel controlled lifting platform for multi-state integrated testing in a microwave darkroom according to claim 7, characterized in that: The unlocking mechanism comprises a U-shaped slide (27) and a linkage ring (24). The outer walls of both sides of the installation frame (9) are horizontally provided with connecting slide grooves (28). The two ends of the U-shaped slide (27) are respectively slidably connected to the corresponding connecting slide grooves (28). The two ends of the U-shaped slide (27) are also respectively connected to the corresponding connecting slide grooves (28) with a second limit spring (29). The second measuring ruler rod (16) is fixedly connected to one end of the U-shaped slide (27). The end of the linkage shaft (21) close to the crank handle (10) passes through the installation frame (9) and is coaxially fixedly connected with a square butt joint (30). The crank (10) is provided with a square slide groove (31) which is slidably matched with the square butt joint (30), and an adjusting spring (32) is connected between the square butt joint (30) and the square slide groove (31). The linkage ring (24) is sleeved on the outside of the square butt joint (30), and a telescopic connecting rod (25) is connected between the linkage ring (24) and the outer wall of the installation frame (9). The linkage ring (24) is matched with the crank (10), and one side of the linkage ring (24) is movably connected to a linkage rod (26) through a hinge, and the end of the linkage rod (26) is movably connected to a U-shaped slide frame (27) through a hinge.

10. The hand wheel controlled lifting platform for multi-state integrated testing in a microwave darkroom according to claim 2, characterized in that: A cross bar (5) is fixedly connected to the side of the main slide seat (2) away from the transverse guide rail (4), and a counterweight block (6) is arranged on the cross bar (5), and a through hole is formed on the counterweight block (6).

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