CN112213534A

CN112213534A - Supporting device with signal shielding function for wave recorder and supporting method

Info

Publication number: CN112213534A
Application number: CN202010887755.3A
Authority: CN
Inventors: 杨河; 王苹; 沈华慧
Original assignee: Nanjing Ruiyi Electronic Technology Co Ltd
Current assignee: Nanjing Ruiyi Electronic Technology Co Ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2021-01-12

Abstract

The invention discloses a supporting device with signal shielding for a wave recorder and a supporting method, and the supporting device comprises a U-shaped base, a supporting mechanism and an adjusting mechanism, wherein the supporting mechanism comprises a first supporting column, a second supporting column and a cross beam, the second supporting column is vertically welded at the center of the top end face of the U-shaped base, the adjusting mechanism comprises a connecting plate, two guide columns, two adjusting rods and a wave recorder mounting seat, the connecting plate and the cross beam are distributed in a T-shaped structure, the connecting plate and the cross beam are fixedly welded, and a signal isolator is arranged at the center of the bottom end face of the wave recorder mounting seat. The invention not only plays a good role in shielding other interference signals, but also ensures that the converted signals of the wave recorder are absolutely independent, does not influence the normal use of the wave recorder, is convenient for the operation of changing the direction and adjusting the height of the wave recorder, and is convenient and quick to use.

Description

Supporting device with signal shielding function for wave recorder and supporting method

Technical Field

The invention relates to the technical field related to supporting devices for wave recorders, in particular to a supporting device with signal shielding and a supporting method for a wave recorder.

Background

A portable waveform recorder, also known as a wave recorder, is a transient signal recorder developed for the application of a power system, and test templates for debugging a generator are preset in software inside the recorder, so that a user can conveniently complete the short-circuit characteristic test, the no-load characteristic test, the excitation system disturbance test, the 10% step-by-step test of the excitation system, the measurement of a field-extinguishing constant, the calibration of a self-aligning synchronous device, the load-shedding record of a unit and the like through the recorder;

the existing wave recorder has poor effect of shielding external environment interference, in addition, when the wave recorder is used, the volume of the wave recorder is large, so that the wave recorder is fixed at a certain position through a wave recorder support frame, but the wave recorder needs to be repeatedly changed in direction and height adjustment when in use, and the existing support frame cannot meet the use requirement, so that the wave recorder is designed with a support device and a support method with signal shielding so as to solve the problems.

Disclosure of Invention

The present invention is directed to a supporting device and a supporting method for a recorder with signal shielding, so as to solve the problems of the background art.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a wave recorder is with strutting arrangement that has signal shielding, includes U type base, supporting mechanism and adjustment mechanism, supporting mechanism is including first support column, second support column and crossbeam, the perpendicular welding of second support column puts at the top face central point of U type base, adjustment mechanism is including connecting plate, two guide posts, two regulation poles and wave recorder mount pads, the connecting plate is T style of calligraphy structure distribution with the crossbeam, and connecting plate and crossbeam fixed weld, the bottom face central point of wave recorder mount pad puts and is equipped with the signal isolator.

In a further embodiment, the bottom end face of the U-shaped base is provided with three supporting feet which are uniformly distributed at intervals.

In a further embodiment, the right side of the bottom end face of the cross beam is fixedly welded at the center position of the top end face of the first support column, the first support column and the second support column are in up-and-down rotating fit, the center position of the top end face of the second support column extends upwards to form a connecting column in a same body, a T-shaped inserting groove is formed in the center position of the bottom end face of the first support column, and the connecting column extends to an inner cavity of the T-shaped inserting groove and is in rotating insertion with the center position of the top end face of the inner cavity of the T-shaped inserting groove.

In a further embodiment, the top end face of the inner cavity of the T-shaped inserting groove is provided with a plurality of semicircular limiting grooves which take the connecting column as a center, the top end of the outer wall of the connecting column is radially provided with a stainless steel elastic sheet, the top end face of the stainless steel elastic sheet is provided with a semicircular limiting block, and the semicircular limiting blocks are connected with the inner cavity of each semicircular limiting groove in a matched and clamped mode.

In a further embodiment, two the guide post is relative around, and is parallel to each other, two the guide post all inclines 45 degrees welding in both sides around the left end face of connecting plate to left side below, two the spout has all been seted up to the bottom face of guide post, and both sides all set up with spacing spout around the inner chamber top of every spout, every the tooth's socket has all been seted up to the inner chamber rear end face of spout, two the equal body in top face right side of adjusting the pole has extended the slider, and every slider slip joint is at every spout inner chamber respectively, every the equal body in both sides extends the stopper that has and corresponds spacing spout inner chamber slip joint around the top of slider, the front and back both ends upper right corner of oscillograph mount pad respectively with the left end of two regulation poles to the fixed weld of lateral wall.

In further embodiment, every both sides around running through the slider have all been seted up to the slider, and extend to the rectangle breach that corresponds regulation pole inner chamber, every rotate through the round pin axle between the lateral wall about the rectangle breach inner chamber and be equipped with the driving roller, and the fixed fluted disc that has cup jointed of the radial lateral wall in top of driving roller, and every fluted disc and every tooth's socket inner chamber roll laminating, every the right-hand member face of adjusting the pole all rotates through the thread groove and pegs graft and have the threaded rod that extends to rectangle breach inner chamber, every the left end of threaded rod all is equipped with the C type fixture block of rotating the laminating with the outer wall bottom lateral wall of every driving roller through the carousel rotation, every embedded hexagonal recess has all been seted up.

In a further embodiment, rectangular mounting holes are horizontally formed in the front end face and the rear end face of the wave recorder mounting seat.

Preferably, the supporting method of the supporting device with the signal shielding based on the wave recorder comprises the following steps:

a1, directly placing the wave recorder on the upper end face of the wave recorder mounting seat, inserting the wave recorder into the mounting holes of the wave recorder through two rectangular mounting holes which penetrate through the front and back of the wave recorder mounting seat by bolts, realizing that the wave recorder is fixedly mounted on the wave recorder mounting seat, modulating and converting the received signals through a semiconductor device by a signal isolator which is fixedly mounted at the center of the bottom end face of the wave recorder mounting seat, then carrying out isolation conversion through a light sensation or magnetic sensation device, then carrying out demodulation conversion to obtain original signals or different signals before isolation, and simultaneously carrying out isolation processing on a power supply of the isolated signals, thereby not only playing a good role of shielding other interference signals, but also ensuring that the converted signals of the wave recorder are absolutely independent without influencing the normal use of the wave recorder;

a2, when the direction of the recorder needs to be changed and adjusted, the first support column can be held by one hand, the second support column can be held by the other hand, the first support column is rotated according to the direction change angle requirement, so that the first support column and the second support column rotate relatively, meanwhile, the connecting column can rotate freely and synchronously in the inner cavity of the T-shaped inserting groove, the rotation of the connecting column can drive the semicircular limiting block at the top end of the stainless steel elastic sheet to rotate synchronously, the semicircular limiting blocks sequentially pass through a plurality of semicircular limiting groove inner cavities distributed in an annular shape through the bending deformation of the stainless steel elastic sheet, when the direction is adjusted by rotation, the rotation is stopped, at the moment, the semicircular limiting blocks can be matched and attached with the semicircular limiting groove inner cavities again, so that the first support column and the second support column do not rotate relatively under the action of no external force, and the direction of the current recorder can be positioned, so as to facilitate the normal use of the wave recorder;

a3, when the height of the wave recorder needs to be adjusted up or down, firstly, the rotating tightness of the front and rear transmission rollers is adjusted through a hexagonal wrench, namely, the hexagonal wrench is inserted into the inner cavity of the embedded hexagonal groove of the corresponding threaded rod to drive the threaded rod to rotate and axially adjust along the inner cavity of the threaded groove of the adjusting rod, the threaded rod is rotatably connected with a C-shaped clamping block through a turntable, so that the C-shaped clamping block can be axially adjusted along with the threaded rod, and the C-shaped clamping block is far away from or close to the transmission rollers;

a4, when the driving roller was kept away from to C type fixture block, when the pulling was adjusted the pole, the slider slided along the spout inner chamber, it is comparatively easy when the fluted disc of driving roller outer wall rolled with the tooth's socket inner chamber, the pulling was adjusted the pole and will be laborsaving a lot like this, when C type fixture block is close to the driving roller, when the pulling was adjusted the pole, the slider slided along the spout inner chamber, it is difficult when the fluted disc of driving roller outer wall rolled with the tooth's socket inner chamber, the pulling is adjusted the pole and will be very hard like this, according to the user demand, elasticity when laminating C type fixture block and driving roller is adjusted to optimum, no matter how to adjust like this, all can make the height of record ripples appearance hover at certain height, can not change at will, just can adjust.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention not only plays a good role in shielding other interference signals through the signal isolator, but also ensures that the converted signals of the wave recorder are absolutely independent and do not influence the normal use of the wave recorder.

2. The invention is convenient for the supporting mechanism and the adjusting mechanism to carry out the operation of changing the direction and adjusting the height of the wave recorder, and the use is convenient and quick.

Drawings

FIG. 1 is a schematic view of the main structure of the present invention;

FIG. 2 is a partial cross-sectional view of the support mechanism of the present invention;

FIG. 3 is a partial cross-sectional view of a front view of the adjustment mechanism of the present invention;

fig. 4 is an enlarged view of the structure of fig. 3 a according to the present invention.

In the figure: 1. a U-shaped base; 11. supporting feet; 2. a support mechanism; 21. a first support column; 22. a second support column; 23. a cross beam; 24. a T-shaped plug groove; 25. a semicircular limiting groove; 26. connecting columns; 27. a stainless steel spring plate; 28. a semicircular limiting block; 3. an adjustment mechanism; 31. a connecting plate; 32. a guide post; 33. adjusting a rod; 34. a wave recorder mounting base; 35. a rectangular mounting hole; 36. a chute; 37. a limiting chute; 38. a tooth socket; 39. a slider; 310. a limiting block; 311. a rectangular notch; 312. a driving roller; 313. a fluted disc; 314. a threaded rod; 315. c-shaped fixture blocks; 316. embedding a hexagonal groove; 4. a signal isolator.

Detailed Description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

Referring to fig. 1-4, the present embodiment provides a supporting device and a supporting method for a wave recorder with signal shielding, including a U-shaped base 1, a supporting mechanism 2 and an adjusting mechanism 3, where the supporting mechanism 2 includes a first supporting column 21, a second supporting column 22 and a cross beam 23, the second supporting column 22 is vertically welded at a center position of a top end face of the U-shaped base 1, the adjusting mechanism 3 includes a connecting plate 31, two guiding columns 32, two adjusting rods 33 and a wave recorder mounting seat 34, the connecting plate 31 and the cross beam 23 are distributed in a T-shaped structure, the connecting plate 31 and the cross beam 23 are fixedly welded, and a signal isolator 4 is disposed at a center position of a bottom end face of the wave recorder mounting seat 34.

The bottom end face of U type base 1 is equipped with three evenly spaced distribution's support footing 11, supports overall structure through support footing 11.

The bottom end face right side of crossbeam 23 is fixed the welding and is put at the top end face central point of first support column 21, rotates from top to bottom the laminating of first support column 21 and second support column 22, and the top end face central point of second support column 22 puts and upwards extends to have spliced pole 26 with the body, and T type inserting groove 24 has been seted up to the bottom end face central point of first support column 21, and spliced pole 26 extends to the inner chamber of T type inserting groove 24, and rotates with the inner chamber top end face central point of T type inserting groove 24 and peg graft.

The top end face of the inner cavity of the T-shaped inserting groove 24 is provided with a plurality of semicircular limiting grooves 25 which take the connecting column 26 as the center, the top end of the outer wall of the connecting column 26 is radially provided with a stainless steel spring piece 27, the top end face of the stainless steel spring piece 27 is provided with a semicircular limiting block 28, and the semicircular limiting blocks 28 are matched and clamped with the inner cavity of each semicircular limiting groove 25.

Two guide posts 32 are relative from beginning to end, and be parallel to each other, two guide posts 32 all incline 45 degrees welding in both sides around the left end face of connecting plate 31 to left below, spout 36 has all been seted up to the bottom face of two guide posts 32, and both sides all are seted up and spacing spout 37 around the inner chamber top of every spout 36, tooth's socket 38 has all been seted up to the inner chamber rear end face of every spout 36, two top end face right sides of adjusting pole 33 all extend with the body have slider 39, and every slider 39 slides the joint respectively at every spout 36 inner chamber, both sides all extend with the body stopper 310 that corresponds spacing spout 37 inner chamber slide joint around the top of every slider 39, the front and back both ends upper right corner of oscillograph mount pad 34 respectively with two left ends of adjusting pole 33 are to lateral wall fixed weld.

Every slider 39 has all been seted up and has been run through slider 39 front and back both sides, and extend to the rectangle breach 311 that corresponds the regulation pole 33 inner chamber, rotate through the round pin axle between the lateral wall about every rectangle breach 311 inner chamber and be equipped with driving roller 312, and the radial lateral wall in top of driving roller 312 has cup jointed fluted disc 313, and every fluted disc 313 rolls with every tooth's socket 38 inner chamber and laminates, every right-hand member face of adjusting pole 33 all rotates to peg graft through the thread groove and has extends to the threaded rod 314 of rectangle breach 311 inner chamber, the left end of every threaded rod 314 all rotates through the carousel and is equipped with the C type fixture block 315 that rotates the laminating with the outer wall bottom lateral wall of every driving roller 312, embedded hexagonal groove 316 has all been seted up to the right-.

In this embodiment, the direct fixing device of the wave recorder is arranged on the upper end face of the wave recorder mounting seat 34, the received signal is modulated and converted through the semiconductor device by the signal isolator 4 fixedly arranged at the central position of the bottom end face of the wave recorder mounting seat 34, then the received signal is isolated and converted through the light sensation or magnetic sensation device, then the received signal is demodulated and converted back to the original signal or different signals before isolation, and meanwhile, the power supply of the isolated signal is isolated, so that the effect of well shielding other interference signals is achieved, the absolute independence of the converted signal of the wave recorder is ensured, and the normal use of the wave recorder is not influenced; when the azimuth conversion adjustment of the recorder is needed, the first support column 21 can be held by one hand, the second support column 22 can be held by the other hand, the first support column 21 is rotated according to the azimuth conversion angle requirement, so that the first support column 21 and the second support column 22 are relatively rotated, meanwhile, the connecting column 26 can freely and synchronously rotate in the inner cavity of the T-shaped inserting groove 24, the rotation of the connecting column 26 can drive the semicircular limiting block 28 at the top end of the stainless steel elastic sheet 27 to synchronously rotate, the semicircular limiting blocks 28 sequentially pass through the inner cavities of the plurality of semicircular limiting grooves 25 which are annularly distributed, when the azimuth is adjusted by rotation, the rotation is stopped, at the moment, the semicircular limiting blocks 28 can be matched and attached with the inner cavities of the semicircular limiting grooves 25 again, so that the first support column 21 and the second support column 22 do not relatively rotate under the effect of no external force, the orientation of the current wave recorder can be positioned, so that the wave recorder can be normally used; when the height of the wave recorder needs to be adjusted up or down, firstly, the rotating tightness of the front driving roller 312 and the rear driving roller 312 is adjusted through a hexagonal head wrench, namely, the hexagonal head wrench is inserted into the inner cavity of the embedded hexagonal groove 316 of the corresponding threaded rod 314 to drive the threaded rod 314 to rotate and axially adjust along the inner cavity of the threaded groove of the adjusting rod 33, the threaded rod 314 is rotatably connected with the C-shaped fixture block 315 through a turntable, so that the C-shaped fixture block 315 can be axially adjusted along with the threaded rod 314, and the C-shaped fixture block 315 is far away from or close to the driving rollers 312; when the C-shaped fixture block 315 is far away from the driving roller 312, when the adjusting rod 33 is pulled, the sliding block 39 slides along the inner cavity of the sliding groove 36, the fluted disc 313 on the outer wall of the driving roller 312 is relatively easy to roll with the inner cavity of the tooth socket 38, so that much labor is saved when the adjusting rod 33 is pulled, when the C-shaped fixture block 315 is close to the driving roller 312, when the adjusting rod 33 is pulled, the sliding block 39 slides along the inner cavity of the sliding groove 36, the fluted disc 313 on the outer wall of the driving roller 312 is difficult to roll with the inner cavity of the tooth socket 38, so that the adjusting rod 33 is very labor-saving when the C-shaped fixture block 315 is attached to the driving roller 312, according to the use requirement, the tightness when the C-shaped fixture block 315 is attached to the driving roller 312 is adjusted to the optimal state, so no matter how the.

Example two

Referring to fig. 1-4, a further improvement is made on the basis of embodiment 1:

rectangular mounting hole 35 has been seted up to the equal level of both ends face around the wave recorder mount pad 34, runs through two rectangle mounting holes 35 around the wave recorder mount pad 34 through the bolt and pegs graft in with the mounting hole of wave recorder, realizes with wave recorder fixed mounting on wave recorder mount pad 34.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a wave recorder is with strutting arrangement that has signal shielding, includes U type base (1), supporting mechanism (2) and adjustment mechanism (3), its characterized in that: supporting mechanism (2) are including first support column (21), second support column (22) and crossbeam (23), second support column (22) vertical welding puts at the top face central point of U type base (1), adjustment mechanism (3) are adjusted pole (33) and recorder mount pad (34) including connecting plate (31), two guide post (32), two, connecting plate (31) are T style of calligraphy structure distribution with crossbeam (23), and connecting plate (31) and crossbeam (23) fixed welding, the bottom face central point of recorder mount pad (34) puts and is equipped with signal isolator (4).

2. The supporting device with signal shielding for the recorder according to claim 1, wherein: the bottom end face of the U-shaped base (1) is provided with three supporting bottom feet (11) which are uniformly distributed at intervals.

3. The supporting device with signal shielding for the recorder according to claim 1, wherein: the bottom end face right side fixed welding of crossbeam (23) is put at the top end face central point of first support column (21), first support column (21) and second support column (22) rotate the laminating from top to bottom, the top end face central point of second support column (22) puts and upwards extends with the body has spliced pole (26), T type inserting groove (24) have been seted up to the bottom end face central point of first support column (21), spliced pole (26) extend to the inner chamber of T type inserting groove (24), and rotate with the inner chamber top end face central point of T type inserting groove (24) and peg graft.

4. The supporting device with signal shielding for the recorder according to claim 3, wherein: the T-shaped plug-in groove structure is characterized in that a plurality of semicircular limiting grooves (25) taking the connecting column (26) as the center are formed in the top end face of the inner cavity of the T-shaped plug-in groove (24), stainless steel elastic pieces (27) are radially arranged at the top end of the outer wall of the connecting column (26), semicircular limiting blocks (28) are arranged at the top end faces of the stainless steel elastic pieces (27), and the semicircular limiting blocks (28) are connected with the inner cavity of each semicircular limiting groove (25) in a matched and clamped mode.

5. The supporting device with signal shielding for the recorder according to claim 1, wherein: the two guide columns (32) are opposite in front and back and are parallel to each other, the two guide columns (32) are welded on the front side and the back side of the left end surface of the connecting plate (31) in an inclined manner of 45 degrees towards the left lower side, sliding grooves (36) are formed in the bottom end surfaces of the two guide columns (32), and the front side and the rear side of the top end of the inner cavity of each sliding groove (36) are respectively provided with a limiting sliding groove (37), the rear end surface of the inner cavity of each sliding groove (36) is respectively provided with a tooth socket (38), the right sides of the top end surfaces of the two adjusting rods (33) are respectively extended with a sliding block (39) in a same body, each sliding block (39) is respectively clamped in the inner cavity of each sliding groove (36) in a sliding way, the front side and the rear side of the top end of each sliding block (39) are respectively extended with a limiting block (310) which is clamped in the inner cavity of the corresponding limiting sliding groove (37) in a sliding way, the upper right corners of the front end and the rear end of the wave recorder mounting base (34) are respectively fixedly welded with the left end opposite side walls of the two adjusting rods (33).

6. The supporting device with signal shielding for the recorder according to claim 5, wherein: every slider (39) all seted up and run through slider (39) front and back both sides, and extend to rectangle breach (311) that correspond regulation pole (33) inner chamber, every rotate through the round pin axle between the lateral wall about rectangle breach (311) inner chamber and be equipped with driving roller (312), and the fixed fluted disc (313) that has cup jointed of the radial lateral wall in top of driving roller (312), and every fluted disc (313) and every tooth's socket (38) inner chamber roll laminating, every the right-hand member face of adjusting pole (33) all rotates through the thread groove and pegs graft threaded rod (314) that have the extension to rectangle breach (311) inner chamber, every the left end of threaded rod (314) all is equipped with through the carousel rotation and rotates C type fixture block (315) of laminating with the outer wall bottom lateral wall of every driving roller (312), every embedded hexagonal recess (316) has all been seted up to the right-hand member.

7. The supporting device with signal shielding for the recorder according to claim 1, wherein: rectangular mounting holes (35) are horizontally formed in the front end face and the rear end face of the wave recorder mounting seat (34).

8. The method for supporting a supporting device with signal shielding for a wave recorder in claim 1 is characterized by comprising the following steps:

a1, directly placing the wave recorder on the upper end face of a wave recorder mounting seat (34), inserting the wave recorder into a front rectangular mounting hole and a rear rectangular mounting hole (35) of the wave recorder mounting seat (34) through bolts, fixedly mounting the wave recorder on the wave recorder mounting seat (34), modulating and converting a received signal through a semiconductor device through a signal isolator (4) fixedly mounted at the center of the bottom end face of the wave recorder mounting seat (34), then carrying out isolation conversion through a light sensation or magnetic sensation device, then demodulating and converting back to an original signal or different signals before isolation, and simultaneously carrying out isolation processing on a power supply of the isolated signal, thereby not only playing a good role of shielding other interference signals, but also ensuring that the converted signal of the wave recorder is absolutely independent without influencing the normal use of the wave recorder;

a2, when the azimuth conversion adjustment of the recorder is needed, the first support column (21) can be held by one hand, the second support column (22) can be held by the other hand, the first support column (21) is rotated according to the azimuth conversion angle requirement, so that the first support column (21) and the second support column (22) are relatively rotated, meanwhile, the connecting column (26) can freely and synchronously rotate in the inner cavity of the T-shaped inserting groove (24), the rotation of the connecting column (26) can drive the semicircular limiting blocks (28) at the top ends of the stainless steel elastic sheets (27) to synchronously rotate, the semicircular limiting blocks (28) can sequentially pass through the inner cavities of the plurality of semicircular limiting grooves (25) which are annularly distributed, the rotation can be stopped after the azimuth conversion adjustment is completed, at the moment, the semicircular limiting blocks (28) can be matched and attached with the inner cavities of the semicircular limiting grooves (25) again, therefore, the first support column (21) and the second support column (22) do not rotate relatively under the action of no external force, and the orientation of the current recorder can be positioned, so that the normal use of the recorder is facilitated;

a3, when the height of the recorder needs to be adjusted up or down, firstly, the rotation tightness of the front and rear driving rollers (312) is adjusted through a hexagonal head wrench, namely, the hexagonal head wrench is inserted into the inner cavity of the embedded hexagonal groove (316) of the corresponding threaded rod (314) to drive the threaded rod (314) to rotate and axially adjust along the inner cavity of the threaded groove of the adjusting rod (33), the threaded rod (314) is rotatably connected with the C-shaped fixture block (315) through a turntable, so the C-shaped fixture block (315) can be axially adjusted along with the threaded rod (314), and the C-shaped fixture block (315) is far away from or close to the driving rollers (312);

a4, when the C-shaped fixture block (315) is far away from the transmission roller (312), when the adjustment rod (33) is pulled, the sliding block (39) slides along the inner cavity of the sliding groove (36), the fluted disc (313) on the outer wall of the transmission roller (312) and the inner cavity of the toothed groove (38) roll relatively easily, so that much labor is saved when the adjustment rod (33) is pulled, when the C-shaped fixture block (315) is close to the transmission roller (312), when the adjustment rod (33) is pulled, the sliding block (39) slides along the inner cavity of the sliding groove (36), the fluted disc (313) on the outer wall of the transmission roller (312) and the inner cavity of the toothed groove (38) roll difficultly, so that the adjustment rod (33) is pulled very labouriously, the tightness when the C-shaped fixture block (315) and the transmission roller (312) are attached is adjusted to an optimal state according to use requirements, so that the height of the wave recorder can be suspended at random and, the adjustment can be carried out only by applying external force, so that the rapid and convenient operation is realized.