A dynamic balance test system for two-roller machine

Abstract

The present invention provides a dynamic balance test system for a two-roller machine, which relates to the technical field of dynamic balance test of rotor components, including: two transverse track shafts are welded at intervals on the top of the pulley frame, two pulleys are symmetrically and slidably installed on the transverse track shaft through spring pushing, and two pulleys are symmetrically and rotatably installed on the top of the vertical part of the pulley frame; in the use state, the top of the vertical traction part of the belt is inserted and extruded with the roller component for transmission; a belt holding mechanism is installed on the vertical mounting frame through spring pushing and sliding, and the belt holding mechanism is used to lift and expand the vertical traction part of the loose and falling belt when the roller component is extracted and disassembled. The present invention can keep the collapsed belt in the use state of being lifted and expanded and opened by the belt holding mechanism. Compared with the existing technology, the operation and use are faster and more convenient, which helps to reduce the consumption and use of manpower, and is beneficial for enterprises to reduce labor costs.

Description

Technical Field

[0001] The invention relates to the technical field of dynamic balance testing of rotor components, and in particular to a dynamic balance testing system for a two-roller machine. Background Art

[0002] The dynamic balancing test can ensure that the internal mass of the roller rotating parts of the two-roller machine is evenly distributed when running at high speed, thereby reducing the vibration caused by imbalance. This not only improves the smoothness of the equipment operation, but also improves the overall work efficiency and performance. The dynamic balancing test is a key step to ensure the reliable, efficient and safe operation of rotating machinery, and is of great significance to improving the overall performance and economy of industrial equipment. When implementing the dynamic balancing test, a special test system is required.

[0003] like Figure 1 As shown, some existing dynamic balancing test devices use belts to directly contact and drive the roller to be tested. After a test is completed, when the roller is removed from the test device, the belt that is tightly fitted with the roller loses support and collapses downward.

[0004] Most existing dynamic balancing test devices lack a mechanism that can lift and expand the collapsed belt. As a result, when the roller is re-inserted into the belt sleeve for transmission, an extra person is required to lift the collapsed belt by hand and expand it to implement the operation. The operation is cumbersome and inconvenient, and consumes a lot of manpower, which is not conducive to enterprises reducing labor costs. Summary of the invention

[0005] In view of this, the present invention provides a dynamic balance testing system for a two-roller machine to solve the problem of lack of a mechanism capable of lifting and expanding the collapsed belt, which makes the operation and use more troublesome and inconvenient when the rollers are re-inserted into the belt for transmission, and consumes more manpower.

[0006] The technical solution proposed by the present invention is: a dynamic balance test device for a two-roller machine, specifically comprising a test device, a data acquisition and calculation module, and a display and control module, wherein the test device comprises an upright bracket, a pulley frame, and an upright mounting frame, wherein the upright bracket is symmetrically arranged at two locations, and the top portions of the two upright brackets are used to carry and place the roller components to be tested;

[0007] Two transverse track shafts are welded at intervals on the top of the pulley frame, and two pulleys are symmetrically slidably installed on the transverse track shafts through spring pushing, and two pulleys are symmetrically rotatably installed on the top of the vertical part of the pulley frame; belts are threaded and installed on the four pulleys, and the two middle pulleys are used to tension the belts. The part of the belt located between the two middle pulleys is arranged in a vertical traction manner, and in the use state, the top of the vertical traction part of the belt is inserted and extruded with the roller component for transmission;

[0008] A belt holding mechanism is installed on the vertical mounting frame through spring pushing and sliding. The belt holding mechanism is used to lift and expand the vertical traction part of the loose and falling belt when the roller component is extracted and disassembled.

[0009] Furthermore, the belt holding mechanism as a whole is composed of a sliding frame and two T-shaped expansion rods symmetrically slidably mounted on the sliding frame, wherein the sliding frame as a whole is an inverted U-shaped structure, and the horizontal part of the T-shaped expansion rod is slidably matched with the hexagonal cross-bracing part at the top of the sliding frame;

[0010] A vertical limit shaft arranged downward is welded at the middle position of the top of the sliding frame, and a driving frame is slidably mounted on the vertical limit shaft. The driving frame as a whole is welded together by a T-shaped frame and two sliding sleeves welded on the T-shaped frame at upper and lower intervals, wherein the two sliding sleeves are slidably matched with the vertical limit shaft;

[0011] Two third connecting rods arranged upwardly tilted are symmetrically connected between the bottom parts of the two T-shaped expansion rods and the horizontal part of the T-shaped frame, and the two T-shaped expansion rods are located in the vertical traction part of the belt. Under normal circumstances, the two T-shaped expansion rods slide close to each other and slide down and separate from the roller component.

[0012] Further, the pulley frame is arranged between two vertical brackets, and the vertical mounting frame is arranged between the pulley frame and the vertical bracket;

[0013] The vertical mounting frame is composed of a ground contact bottom plate and two L-shaped vertical support rods symmetrically welded at both ends of the ground contact bottom plate, and the sliding frame is slidably matched with the two L-shaped vertical support rods through spring pushing;

[0014] A baffle is welded in the center between two L-shaped vertical support rods above the top of the vertical mounting frame. The vertical limit shaft and the baffle are slidably matched, and when the sliding frame slides upward, the lower sliding sleeve contacts the baffle, and when the sliding frame slides downward, the upper sliding sleeve contacts the baffle.

[0015] Furthermore, a horizontally arranged L-shaped handlebar is welded to the middle position of the top of the sliding frame, and an L-shaped plug rod is installed on the tail end of the L-shaped handlebar through a spring push-and-slide mechanism. When the sliding frame slides downward, the head end of the L-shaped plug rod is plugged into and matched with the L-shaped vertical support rod.

[0016] Furthermore, a vertical positioning shaft is welded between the transverse track shaft and the middle part of the pulley frame bottom plate, a T-shaped slider is slidably mounted on the vertical positioning shaft, and two first connecting rods are symmetrically rotated between the T-shaped slider and the sliding shafts of the two middle pulleys;

[0017] The T-shaped slider is welded with a driving rod which is horizontally arranged as a whole and has a continuous vertical bending structure. The top of the horizontal cross bracing part of the driving rod is installed with an insertion shaft through pushing and sliding. A row of positioning holes is provided on the vertical positioning shaft. The head end of the insertion shaft is inserted and matched with the positioning hole through insertion.

[0018] An L-shaped pressing rod is slidably installed through the bent position of the tail end of the driving rod, and a second connecting rod is rotatably connected between the top end of the L-shaped pressing rod and the tail end of the insertion shaft.

[0019] Furthermore, two load-bearing wheels are symmetrically and staggeredly installed on the top part of the vertical bracket, and the rotating shafts at both ends of the roller component are respectively placed in the recessed space between the two load-bearing wheels 101 on the corresponding sides and roll against and contact with the two load-bearing wheels 101 on the corresponding sides.

[0020] Furthermore, an erection detection rod is slidably installed at the middle position of the top end of the erection bracket through a spring push, and a roller is rotatably installed at the top end of the erection detection rod. When in use, the roller rolls against the rotating shaft of the roller component;

[0021] A vibration sensor is fixedly mounted on the erection detection rod.

[0022] Furthermore, the vibration sensor is electrically connected to the data acquisition and operation module.

[0023] The present invention provides a two-roller machine dynamic balance test system, which has the following beneficial effects:

[0024] According to the present invention, the two T-shaped expansion rods are driven to slide left and right towards each other during the process of sliding upwards, so that the collapsed belt can be stretched out to allow the newly replaced roller component to be re-inserted and assembled with the belt. This is used together with the upward sliding lifting function of the two T-shaped expansion rods, so that the collapsed belt can be kept in a lifted and expanded and opened use state. Compared with the existing technology that lacks a lifting and expansion holding mechanism, it can save the trouble of an extra person lifting the collapsed belt by hand, lifting it up, expanding it and opening it, and maintaining the lifted and expanded and opened belt for a long time when the rollers are re-inserted into the belt sleeve for transmission after replacement. The operation is relatively quick and convenient, which helps to reduce the consumption and use of manpower, and is beneficial for enterprises to reduce labor costs.

[0025] In addition, through the power transmission of the upper and lower sliding sleeves and the baffle plate, the two T-shaped expansion rods can be pushed to drive the drive frame to slide up and down when sliding up and down and switching up and down, thereby controlling the two T-shaped expansion rods to expand and retract. This eliminates the trouble of requiring additional manual effort to slide and retract the two T-shaped expansion rods, helps to simplify the operating steps of the belt holding mechanism as a whole to lift and expand the belt, and is convenient and efficient to use.

[0026] In addition, the L-shaped pressure rod is arranged on the tail end part of the driving rod, so that when the foot drives the T-shaped slider to slide up and down through the driving rod and controls the two pulleys to tighten and relax the belt, the L-shaped pressure rod can be pressed down to complete the extraction of the plug-in shaft, eliminating the trouble of additional sliding extraction of the plug-in shaft when loosening and tightening the belt, which helps to simplify the belt loosening and tensioning steps, and is convenient and time-saving to operate. After loosening the L-shaped pressure rod, the spring on the plug-in shaft can rebound and push to make it slide forward and reset to fit into the positioning hole for positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0028] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0029] In the attached picture:

[0030] Figure 1 The overall structural diagram of the present invention is shown;

[0031] Figure 2 The overall rear side structure schematic diagram of the present invention is shown;

[0032] Figure 3 A schematic diagram of the structure of the vertical mounting frame of the present invention is shown;

[0033] Figure 4 A schematic diagram of the structure of the pulley frame of the present invention is shown;

[0034] Figure 5 A schematic diagram of the sliding frame structure of the present invention is shown;

[0035] Figure 6 A schematic diagram of the bottom structure of the sliding frame of the present invention is shown;

[0036] Figure 7 A schematic diagram of the structure of a T-shaped expansion support rod of the present invention is shown;

[0037] Figure 8 A schematic diagram of the driving rod structure of the present invention is shown;

[0038] Fig. 9 It shows a schematic diagram of the belt of the present invention in a lifted and stretched state;

[0039] Fig.10 A schematic diagram showing a sliding frame of the present invention in an upward sliding opening state is shown;

[0040] Fig.11 Shows a system control flow chart of the present invention;

[0041] Reference numerals list

[0042] 1. Vertical bracket; 101. Load-bearing wheel; 102. Vertical detection rod; 103. Positioning sleeve;

[0043] 2. Vibration sensor;

[0044] 3. Pulley frame; 301. lateral track shaft; 302. Pulley; 3021. first connecting rod; 303. vertical positioning shaft; 304. T-shaped slider; 3041. driving rod; 3042. plug shaft; 3043. L-shaped pressing rod; 3044. second connecting rod;

[0045] 4. vertical mounting frame; 401. L-shaped vertical support rod; 402. baffle plate;

[0046] 5. Belt;

[0047] 6. Sliding frame; 601. T-shaped expansion rod; 6011. third connecting rod; 602. L-shaped handle bar; 6021. L-shaped plug rod; 603. driving frame; 6031. sliding sleeve; 604. vertical limit axis. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0049] For convenience of description, the length direction of the pulley frame 3 is marked as the front-to-back direction, and the width direction of the pulley frame 3 is marked as the left-to-right direction.

[0050] Please refer to Figures 1 to 11 , an embodiment provided by the present invention:

[0051] The present invention proposes a dynamic balance test system for a two-roller machine, comprising a test device, a data acquisition and calculation module, and a display and control module, wherein the test device comprises an erection bracket 1, a load-bearing wheel 101, an erection detection rod 102, a positioning sleeve 103, a vibration sensor 2, a pulley frame 3, a transverse track shaft 301, a pulley 302, a first connecting rod 3021, an erection positioning shaft 303, a T-shaped slider 304, a driving rod 3041, and an insertion shaft 3042. , L-shaped pressing rod 3043, second connecting rod 3044, vertical mounting frame 4, L-shaped vertical support rod 401, baffle plate 402, belt 5, sliding frame 6, T-shaped expansion support rod 601, third connecting rod 6011, L-shaped handle bar 602, L-shaped plug rod 6021, driving frame 603, sliding sleeve 6031, vertical limit shaft 604, wherein the vertical bracket 1 is symmetrically arranged at two locations, and the top parts of the two vertical brackets 1 are used to carry and place the roller components to be detected;

[0052] Among them, two transverse track shafts 301 are welded at intervals at the top of the pulley frame 3, and two pulleys 302 are symmetrically and slidably installed on the transverse track shaft 301 through spring pushing, and two pulleys 302 are symmetrically and rotatably installed on the top of the vertical part of the pulley frame 3; the belt 5 is threaded and installed on the four pulleys 302, and the two middle pulleys 302 are used to tension the belt 5. The part of the belt 5 located between the two middle pulleys 302 is arranged in a vertical traction manner, and in the use state, the top of the vertical traction part of the belt 5 is inserted and extruded with the roller component for transmission;

[0053] A belt holding mechanism is installed on the vertical mounting frame 4 through spring pushing and sliding.

[0054] Preferably, the belt holding mechanism as a whole is composed of a sliding frame 6 and two T-shaped expansion rods 601 symmetrically slidably mounted on the sliding frame 6, wherein the sliding frame 6 as a whole is an inverted U-shaped structure, and the horizontal portion of the T-shaped expansion rod 601 is slidably matched with the hexagonal cross bracing portion at the top of the sliding frame 6;

[0055] A vertical limit shaft 604 arranged downward is welded at the middle position of the top of the sliding frame 6, and a driving frame 603 is slidably mounted on the vertical limit shaft 604. The driving frame 603 is composed of a T-shaped frame and two sliding sleeves 6031 welded on the T-shaped frame at an interval, wherein the two sliding sleeves 6031 are slidably matched with the vertical limit shaft 604;

[0056] Two third connecting rods 6011 arranged upwardly tilted are symmetrically rotated and connected between the bottom side parts of the two T-shaped expansion rods 601 and the horizontal part of the T-shaped frame, and the two T-shaped expansion rods 601 are located in the vertical traction part of the belt 5. Under normal conditions, the two T-shaped expansion rods 601 slide close to each other and close together, and slide down and separate from the roller component, which can avoid relative wear caused by long-term contact with the belt 5 and the roller component. The two T-shaped expansion rods 601, the two third connecting rods 6011 and the driving frame 603 are connected together to form two crank slider mechanisms. Through these two mechanisms, the upward and downward sliding driving frame 603 can push and drive the two T-shaped expansion rods 601 to slide left and right toward each other to implement expansion and contraction;

[0057] Guide wheels are installed at both the upper and lower ends of the T-shaped expansion rod 601.

[0058] Preferably, the pulley frame 3 is arranged between two vertical brackets 1, and the vertical mounting frame 4 is arranged between the pulley frame 3 and the vertical bracket 1;

[0059] The vertical mounting frame 4 is composed of a ground contacting bottom plate and two L-shaped vertical support rods 401 symmetrically welded at both ends of the ground contacting bottom plate, and the sliding frame 6 is slidably matched with the two L-shaped vertical support rods 401 through spring pushing;

[0060] A baffle plate 402 is welded in the center between the two L-shaped vertical support rods 401 above the top of the vertical mounting frame 4, and the vertical limit shaft 604 slides through and fits with the baffle plate 402. When the sliding frame 6 slides upward, the lower sliding sleeve 6031 abuts against the baffle plate 402. When the sliding frame 6 slides downward, the upper sliding sleeve 6031 abuts against the baffle plate 402.

[0061] Preferably, a horizontally arranged L-shaped handle bar 602 is welded to the middle position of the top of the sliding frame 6, and an L-shaped plug rod 6021 is installed on the tail end portion of the L-shaped handle bar 602 through a spring push-up sliding. When the sliding frame 6 slides downward, the head end portion of the L-shaped plug rod 6021 is plugged into and matched with the L-shaped vertical support rod 401. The L-shaped plug rod 6021 can be inserted into the positioning sliding frame 6, so that the two T-shaped expansion rods 601 and the entire belt holding mechanism are kept in a use state in the empty position separated from the roller component. After the L-shaped plug rod 6021 is pulled out, the sliding frame 6 and the two T-shaped expansion rods 601 thereon can be pushed upward by the spring rebound on the two L-shaped vertical support rods 401 to slide, so that the belt 5 that collapses downward after the roller component is extracted and disassembled is pushed upward and kept in a jacked-up state for the newly replaced roller component and the belt 5 to be re-inserted and assembled (refer to Fig. 9 ), and the two T-shaped expansion rods 601 are driven to slide away from each other in the process of sliding upward, so that the collapsed belt 5 can be opened to allow the newly replaced roller components to be re-inserted and assembled with the belt 5 (refer to Fig. 9), which is used together with the upward sliding lifting function of the two T-shaped expansion rods 601, and the collapsed belt 5 can be kept in the lifted and expanded open use state. Compared with the existing technology that lacks the lifting and expansion holding mechanism, it can save the trouble of an extra person lifting the collapsed belt by hand, lifting it up and expanding it, and maintaining the lifted and expanded belt 5 for a long time when the roller is re-inserted with the belt sleeve for transmission after replacement. The operation is relatively quick and convenient, which helps to reduce the consumption and use of manpower, and is beneficial to enterprises to reduce labor costs;

[0062] Through the power transmission between the upper and lower sliding sleeves 6031 and the baffle plate 402, when the two T-shaped expansion rods 601 slide up and down and switch between lifting and lowering, the driving frame 603 can be pushed up and down to control the two T-shaped expansion rods 601 to expand and retract, which saves the trouble of additional manual effort to slide and retract the two T-shaped expansion rods 601, helps to simplify the operation steps of the belt holding mechanism as a whole to lift and expand the belt 5, and is convenient and efficient to use;

[0063] The L-shaped handlebar 602 is used to drive the sliding frame 6 and the two T-shaped expansion rods 601 to slide downward and reset. When the belt holding mechanism is in the upward sliding use state, the L-shaped insertion rod 6021 is located at the top of the L-shaped vertical support rod 401. When sliding downward to reset the belt holding mechanism, the L-shaped insertion rod 6021 needs to be slid to the left and pulled out of the empty position; the L-shaped insertion rod 6021 is set at the tail end of the L-shaped handlebar 602 on the part for the hand to hold and exert force, so that when the hand resets the belt holding mechanism downward through the L-shaped handlebar 602, the L-shaped insertion rod 6021 can be pulled out of the empty position at the same time, eliminating the trouble of step-by-step operation and being convenient to use.

[0064] Preferably, a vertical positioning shaft 303 is welded between the transverse track shaft 301 and the middle part of the bottom plate of the pulley frame 3, a T-shaped slider 304 is slidably mounted on the vertical positioning shaft 303, two first connecting rods 3021 are symmetrically rotated between the T-shaped slider 304 and the sliding shafts of the two middle pulleys 302, the two first connecting rods 3021 and the T-shaped slider 304 are connected together to form two crank slider mechanisms, through which the up and down sliding T-shaped slider 304 can drive the two pulleys 302 to slide left and right to tighten and relax the belt 5;

[0065] The T-shaped slider 304 is welded with a driving rod 3041 which is horizontally arranged as a whole and has a continuous vertical bending structure. The top of the horizontal cross bracing part of the driving rod 3041 is installed with an insertion shaft 3042 through pushing and sliding. A row of positioning holes are provided on the vertical positioning shaft 303. The head end of the insertion shaft 3042 is inserted and matched with the positioning holes. The insertion shaft 3042 can be inserted and fixed to the T-shaped slider 304, so that the two pulleys 302 are kept in a state of sliding close to each other to tighten the belt 5. After the insertion shaft 3042 is pulled out, the spring on the horizontal track shaft 301 can automatically rebound and push to drive the two middle pulleys 302 to slide away from each other and disengage from the belt 5, thereby completing the relaxation of the belt 5.

[0066] The tail end of the driving rod 3041 is bent and slidably installed with an L-shaped pressing rod 3043, and the top of the L-shaped pressing rod 3043 is rotatably connected to the tail end of the plug shaft 3042 with a second connecting rod 3044. The L-shaped pressing rod 3043 is driven by foot pressure, and the L-shaped pressing rod 3043, the second connecting rod 3044 and the plug shaft 3042 are connected together to form two crank slider mechanisms. Through these two mechanisms, the L-shaped pressing rod 3043 is driven to slide up and down, and the plug shaft 3042 can be driven to move left and right, so as to tighten the T-shaped slider 304 and the two pulleys 302 in the middle, and the L-shaped pressing rod 3043 is set On the tail end of the driving rod 3041, the foot can slide and drive the T-shaped slider 304 up and down through the driving rod 3041, and when controlling the two pulleys 302 to tighten and relax the belt 5, the L-shaped pressing rod 3043 can be pressed down to complete the extraction of the plug shaft 3042, eliminating the trouble of additional sliding extraction of the plug shaft 3042 when loosening and tightening the belt 5, which helps to simplify the loosening and tensioning steps of the belt 5, and is convenient and time-saving to operate; after loosening the L-shaped pressing rod 3043, the spring on the plug shaft 3042 can rebound and push to make it slide forward and reset to fit into the positioning hole for positioning;

[0067] A driving device is fixed on the top of the end of the pulley frame 3 opposite to the second connecting rod 3044. The driving device is axially connected to the pulley 302 at its position for transmission, and the driving device is composed of a motor and a reducer. The driving device is used to rotationally drive the belt 5 and the roller component through the pulley 302.

[0068] Preferably, the top portion of the vertical bracket 1 is symmetrically mounted with two load-bearing wheels 101 that rotate back and forth alternately, and the rotating shafts at both ends of the roller component are respectively placed in the recessed space between the two load-bearing wheels 101 on the corresponding sides and roll against the two load-bearing wheels 101 on the corresponding sides.

[0069] Preferably, an erection detection rod 102 is slidably installed at the middle position of the top of the erection bracket 1 through a spring push, and a roller is rotatably installed at the top of the erection detection rod 102. When in use, the roller rolls against the rotating shaft of the roller component;

[0070] A vibration sensor 2 is fixedly mounted on the vertical detection rod 102;

[0071] Two positioning sleeves 103 are welded at upper and lower intervals on the vertical bracket 1 near the vertical detection rod 102. The vertical detection rod 102 is pushed by a spring and slides through the two positioning sleeves 103, and a tightening bolt is screwed through the upper positioning sleeve 103. When the roller component is moved and disassembled at the top of the vertical bracket 1, the vertical detection rod 102 can be slid downward to avoid it being broken by the weight of the roller component or collision, and the tightening bolt is used to tighten the vertical detection rod 102 and keep it in the lower sliding position.

[0072] Preferably, the vibration sensor 2 is electrically connected to the data acquisition and calculation module.

[0073] Working principle: When testing, the two end shafts of the roller component are placed in the recessed space between the two load-bearing wheels 101 and are in rolling contact with the two load-bearing wheels 101. Then the driving device is turned on, and the driving device drives the belt 5 and the roller component to rotate through the pulley 302.

[0074] The vertical detection rod 102 rolls against the rotating shaft of the roller component through the roller at its top end, and is used to transmit the vibration of the rotating operation of the roller component to the two vibration sensors 2. The two vibration sensors 2 are used to detect and collect the vibration amount of the rotating motion of the roller component. The two vibration sensors 2 first transmit the collected vibration amount signal to the data acquisition and operation module, and then the data acquisition and operation module screens and calculates the vibration amount signal through its main board, filter board, A / D acquisition card and passive bottom board, and obtains the phase and size of the imbalance amount of the roller component. Finally, the acquisition and operation module converts the vibration amount into visual information and displays it on the display control module for staff to view and identify.

[0075] In this article, there are a few points to note:

[0076] 1. The drawings of the embodiments of the present invention only involve structures related to the embodiments of the present invention, and other structures can refer to the general design.

[0077] 2. In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

[0078] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A dynamic balance testing device for a two-roller machine, comprising: A vertical support (1), a pulley frame (3) and a vertical mounting frame (4), wherein the vertical support (1) is symmetrically arranged at two locations, and the top portions of the two vertical supports (1) are used to carry and place roller components to be tested; The invention is characterized in that two transverse track shafts (301) are welded at intervals on the top of the pulley frame (3), two pulleys (302) are symmetrically slidably installed on the transverse track shaft (301) by means of spring pushing, and two pulleys (302) are symmetrically rotatably installed on the top of the vertical part of the pulley frame (3); a belt (5) is threaded and installed on the four pulleys (302), the two middle pulleys (302) are used to tension the belt (5), the part of the belt (5) located between the two middle pulleys (302) is arranged in a vertical traction manner, and in a use state, the top of the vertical traction part of the belt (5) is inserted and extruded with a roller component for transmission; A belt holding mechanism is installed on the vertical mounting frame (4) through spring pushing and sliding, and the belt holding mechanism is used to lift and expand the vertical traction part of the belt (5) that is loose and falling when the roller component is extracted and removed; The belt holding mechanism as a whole is composed of a sliding frame (6) and two T-shaped expansion rods (601) symmetrically slidably mounted on the sliding frame (6), wherein the sliding frame (6) as a whole is an inverted U-shaped structure, and the horizontal portion of the T-shaped expansion rod (601) is slidably matched with the hexagonal cross-bracing portion at the top of the sliding frame (6); A vertical limit shaft (604) arranged downward is welded at the middle position of the top of the sliding frame (6), a driving frame (603) is slidably mounted on the vertical limit shaft (604), and the driving frame (603) is welded together by a T-shaped frame and two sliding sleeves (6031) welded to the T-shaped frame at an interval, wherein the two sliding sleeves (6031) are slidably matched with the vertical limit shaft (604); Two third connecting rods (6011) arranged to be tilted upward are symmetrically connected between the bottom side parts of the two T-shaped expansion rods (601) and the horizontal part of the T-shaped frame, and the two T-shaped expansion rods (601) are located in the vertical traction part of the belt (5). Under normal conditions, the two T-shaped expansion rods (601) slide close to each other and slide down and separate from the roller component; The pulley frame (3) is arranged between two vertical brackets (1), and the vertical mounting frame (4) is arranged between the pulley frame (3) and the vertical bracket (1); The vertical mounting frame (4) is composed of a ground contact base plate and two L-shaped vertical support rods (401) symmetrically welded to the two ends of the ground contact base plate, and the sliding frame (6) is slidably matched with the two L-shaped vertical support rods (401) through spring pushing; A baffle plate (402) is welded in the middle between two L-shaped vertical support rods (401) above the top end of the vertical mounting frame (4), and the vertical limit shaft (604) and the baffle plate (402) are slidably matched, and when the sliding frame (6) slides upward, the sliding sleeve (6031) on the lower side abuts against the baffle plate (402), and when the sliding frame (6) slides downward, the sliding sleeve (6031) on the upper side abuts against the baffle plate (402).

2. A dynamic balance testing device for a two-roller machine according to claim 1, characterized in that: A horizontally arranged L-shaped handlebar (602) is welded to the middle position of the top end of the sliding frame (6), and an L-shaped plug rod (6021) is installed on the tail end of the L-shaped handlebar (602) through spring pushing and sliding. When the sliding frame (6) slides downward, the head end of the L-shaped plug rod (6021) is plugged into and matched with the L-shaped vertical support rod (401).

3. A dynamic balance testing device for a two-roller machine according to claim 1, characterized in that: A vertical positioning shaft (303) is welded between the transverse track shaft (301) and the middle part of the bottom plate of the pulley frame (3), a T-shaped slider (304) is slidably mounted on the vertical positioning shaft (303), and two first connecting rods (3021) are symmetrically rotatably connected between the T-shaped slider (304) and the sliding shafts of the two middle pulleys (302); The T-shaped slider (304) is welded with a driving rod (3041) which is arranged horizontally as a whole and has a continuous vertical bending structure. The top end of the horizontal cross bracing portion of the driving rod (3041) is installed with an insertion shaft (3042) through pushing and sliding. A row of positioning holes is provided on the vertical positioning shaft (303). The head end of the insertion shaft (3042) penetrates and plugs into the positioning hole. An L-shaped pressing rod (3043) is slidably installed through the bent position of the tail end of the driving rod (3041), and a second connecting rod (3044) is rotatably connected between the top end of the L-shaped pressing rod (3043) and the tail end of the insertion shaft (3042).

4. A dynamic balance testing device for a two-roller machine according to claim 1, characterized in that: Two load-bearing wheels (101) are symmetrically and staggeredly installed on the top portion of the vertical support (1), and the rotating shafts at both ends of the roller component are respectively placed in the recessed space between the two load-bearing wheels (101) on the corresponding sides and are in rolling contact with the two load-bearing wheels (101) on the corresponding sides.

5. The dynamic balance testing device of a two-roller machine according to claim 1, characterized in that: An erection detection rod (102) is slidably mounted at the middle position of the top end of the erection bracket (1) through a spring push, and a roller is rotatably mounted at the top end of the erection detection rod (102). When in use, the roller rolls against and contacts the rotating shaft of the roller component. A vibration sensor (2) is fixedly mounted on the erection detection rod (102).

6. A dynamic balance test system for a two-roller machine, characterized in that: include: The test device, data acquisition and operation module, and display control module as claimed in any one of claims 1 to 5, wherein the vibration sensor (2) is electrically connected to the data acquisition and operation module.

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