CN220173627U - Adjustable backboard mechanism for VPX plug box - Google Patents

Abstract

The utility model discloses an adjustable backboard mechanism for a VPX plug box, which comprises a bearing frame, wherein the bearing frame is provided with a guide groove and a backboard; the backboard adjusting assembly comprises an adjusting frame which is in sliding connection with the bearing frame, and the adjusting frame is provided with a first end face and a second end face which are oppositely arranged; the guide rail is arranged on the adjusting frame and corresponds to the guide groove; the locker is detachably arranged on the first end face of the adjusting frame; the transmission belt is arranged on the second end face of the adjusting frame; a plurality of fixed pulleys are arranged on the periphery of the second end face, and the transmission belt is connected with the adjusting frame through the fixed pulleys; the regulator and the driver are arranged at the top of the regulating frame and are respectively connected with the transmission belt; the positions of the regulator and the driver relative to the top of the regulating frame are adjustable up and down. The backboard is installed through the backboard adjusting assembly, so that the left and right directions of the backboard are adjustable, accurate plug-in module insertion and extraction is realized, and the plug-in module insertion and extraction interference or deformation of the plug-in module during locking caused by part machining errors is avoided.

Description

Adjustable backboard mechanism for VPX plug box

Technical Field

The utility model belongs to the technical field of VPX plug boxes, and particularly relates to an adjustable backboard mechanism for a VPX plug box.

Background

The modern VPX chassis has numerous models, various kinds of complex types and wide functions, but the accuracy of installing the chassis plug-in module becomes a difficult problem because of the complex shape and various internal parts of the chassis and the limited space in the chassis.

Patent application number CN202211287763.X discloses a self-adaptive high-precision VPX chassis, and discloses that a front cross beam is arranged at the front part in a chassis base body, a front IO plug-in unit is inserted on the front cross beam, and the front IO plug-in unit is fixed on the front cross beam through a booster plug-in unit; the rear end of the front beam is fixedly provided with a VPX backboard, one surface of the VPX backboard, which is far away from the front beam, is fixedly provided with a positioning block, one end of the positioning block is fixedly connected with the VPX backboard, the other end of the positioning block is fixedly connected with the rear beam, the rear beam is arranged at the rear part in the box body, the rear beam is provided with a rear IO plug-in unit in an inserting way, and the rear IO plug-in unit is fixed on the rear beam through a power-assisted plug-in unit.

As can be seen from the drawing of the VPX chassis of the patent, the VPX backboard is arranged between the front IO plug-in and the rear IO plug-in, one end of the VPX backboard is connected with the IO plug-in through the front cross beam, and the other end of the VPX backboard is connected with the rear IO plug-in through the positioning block, so that the problem of the matching precision of the chassis plug-in is solved. In the patent, after the VPX backboard is connected with the front IO plug-in and the rear IO plug-in, the position is not adjustable, although the matching distance of the front IO plug-in and the rear IO plug-in is ensured by the high precision of mechanical processing, the processing precision requirements on all relevant parts in a chassis are very high, but the processing precision of any part does not reach the standard, and the plug-in module plugging interference or the deformation during the plug-in module locking can be possibly caused.

Disclosure of Invention

In order to solve the above problems, the present utility model aims to provide an adjustable backboard mechanism for a VPX chassis, so as to solve the problem of poor installation precision of a VPX chassis plug-in module.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

an adjustable backboard mechanism for a VPX plug box comprises a bearing frame, wherein a guide groove and a backboard are arranged on the bearing frame;

the backboard adjusting assembly comprises an adjusting frame which is in sliding connection with the bearing frame, and the adjusting frame is provided with a first end face and a second end face which are oppositely arranged; the guide rail is arranged on the adjusting frame and corresponds to the guide groove;

the locker is detachably arranged on the first end face of the adjusting frame;

the transmission belt is arranged on the second end face of the adjusting frame; a plurality of fixed pulleys are arranged on the periphery of the second end face, and the transmission belt is connected with the adjusting frame through the fixed pulleys;

the regulator and the driver are arranged at the top of the regulating frame and are respectively connected with the transmission belt; the positions of the regulator and the driver relative to the top of the regulating frame are adjustable up and down.

The locker is arranged close to the top of the adjusting frame; the lock comprises a lock seat detachably connected with an adjusting frame, a screw rod arranged in the lock seat, and a first locking block and a second locking block arranged at two ends of the screw rod.

Square grooves for locking and guiding the first locking block and the second locking block and long round grooves for guiding and limiting the screw rod are formed at two ends of the lock seat in the length direction; a first inclined plane is arranged in each square groove.

One end of the screw rod is sleeved in the first locking block; the other end is connected with the second locking block through threads; and second inclined planes attached to the first inclined planes are respectively arranged on the first locking block and the second locking block.

A first guide groove for installing the regulator and a second guide groove for installing the driver are arranged at the top of the regulating frame; the first guide groove is arranged at the center position of the top of the adjusting frame; the second guide groove is symmetrically arranged on two sides of the first guide groove.

The adjuster comprises an adjusting seat detachably connected with the first guide groove, an adjusting pin vertically connected with the adjusting seat, an adjusting wheel connected with one end of the adjusting pin, a check ring arranged on the adjusting pin and connected with the adjusting seat, and a set screw for fastening the adjusting wheel; the adjusting wheel is arranged outside the first guide groove and connected with the driving belt.

The driver comprises a wheel seat detachably connected with the second guide groove and a friction wheel in threaded connection with the wheel seat; the friction wheel is arranged outside the second guide groove and connected with the driving belt.

A pressing wheel connected with the transmission belt is also arranged on the second end surface of the adjusting frame; the pressing wheels are arranged on two sides of the regulator and the driver respectively.

The fixed pulleys are respectively arranged at four corners of the adjusting frame and the middle position of the bottom.

The adjusting frame is provided with a plurality of mounting holes for mounting the positioning pins.

Compared with the prior art, the utility model has the following advantages:

according to the adjustable backboard mechanism for the VPX plug-in box, the backboard is installed through the backboard adjusting assembly, so that the left and right directions of the backboard are adjustable, accurate plug-in module insertion and extraction is realized, and the plug-in module insertion and extraction interference or deformation during plug-in module locking caused by part machining errors is avoided; the backboard adjusting assembly has a quick locking function.

Drawings

In order to more clearly illustrate the technical solutions of specific embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.

FIG. 1 is a schematic diagram of an adjustable back plate mechanism for a VPX plug box according to the present utility model;

FIG. 2 is an exploded view of an adjustable back plate mechanism for a VPX plug box according to the present utility model;

FIG. 3 is a schematic view of a first end face of a back plate adjusting assembly according to the present utility model;

FIG. 4 is a schematic diagram of a second end face of the back plate adjusting assembly according to the present utility model;

FIG. 5 is an enlarged schematic view of FIG. 4 at A;

FIG. 6 is an enlarged schematic view at B in FIG. 4;

FIG. 7 is an exploded view of the back plate adjustment assembly of the present utility model;

FIG. 8 is a schematic diagram of an adjusting frame according to the present utility model;

FIG. 9 is an enlarged schematic view of FIG. 8 at C;

FIG. 10 is a schematic view of the structure of the locker of the present utility model;

FIG. 11 is a schematic view of an angle structure of a lock base according to the present utility model;

FIG. 12 is a schematic view of another angle of the lock base of the present utility model;

FIG. 13 is a schematic view of the structure of the screw of the present utility model;

FIG. 14 is a schematic view of a first lock block according to the present utility model;

FIG. 15 is a schematic view of a second lock block according to the present utility model;

FIG. 16 is a schematic diagram of a regulator according to the present utility model;

FIG. 17 is a schematic view of the structure of the adjusting wheel of the present utility model;

FIG. 18 is a schematic view of the structure of the adjusting pin of the present utility model;

FIG. 19 is a schematic diagram of a driver according to the present utility model;

FIG. 20 is a schematic view of a fixed sheave of the present utility model;

FIG. 21 is a schematic view of the structure of the pinch roller of the present utility model;

FIG. 22 is a schematic view of a conveyor belt according to the present utility model;

FIG. 23 is a schematic view of a locating pin according to the present utility model;

FIG. 24 is a schematic view of a frame structure of the present utility model;

FIG. 25 is an enlarged schematic view of FIG. 24 at D;

reference numerals: 1-adjusting frame, 101-first end face, 102-second end face, 103-guide rail, 104-first guide groove, 105-second guide groove, 106-locating pin, 107-mounting hole, 2-locker, 21-lock seat, 211-square groove, 212-long round groove, 22-screw, 23-lock block one, 24-lock block two, 3-driving belt, 4-fixed pulley, 5-adjuster, 51-adjusting seat, 52-adjusting pin, 53-adjusting wheel, 54-retainer ring, 55-set screw, 6-driver, 61-wheel seat, 62-friction wheel, 7-first inclined plane, 8-second inclined plane, 9-pressing wheel, 10-bearing frame, 11-guide groove, 12-back plate.

Detailed Description

The present utility model will be further described with reference to the drawings and the specific embodiments, but it should not be construed that the scope of the subject matter of the present utility model is limited to the following embodiments, and various modifications, substitutions and alterations made according to the ordinary skill and familiar means of the art to which this utility model pertains are included within the scope of the present utility model without departing from the above technical idea of the utility model.

Referring to fig. 1 to 25 in combination, an adjustable backboard mechanism for a VPX plug box according to the present utility model includes a carrying frame 10, and a guide groove 11 and a backboard 12 are provided on the carrying frame 10;

the backboard adjusting assembly comprises an adjusting frame 1 which is in sliding connection with the bearing frame 10, wherein the adjusting frame 1 is provided with a first end face 101 and a second end face 102 which are oppositely arranged; the guide rail 103 corresponding to the guide groove 11 is arranged on the adjusting frame 1;

the locker 2 is detachably arranged on the first end face 101 of the adjusting frame 1;

the transmission belt 3 is arranged on the second end surface 102 of the adjusting frame 1; a plurality of fixed pulleys 4 are arranged on the periphery of the second end face 102, and the driving belt 3 is connected with the adjusting frame 1 through the fixed pulleys 4;

the regulator 5 and the driver 6 are arranged at the top of the regulating frame 1 and are respectively connected with the driving belt 3; the positions of the regulator 5 and the driver 6 relative to the top of the regulating frame 1 are adjustable up and down.

According to the adjustable backboard mechanism for the VPX plug-in box, the backboard 12 is arranged on the bearing frame 10, the guide groove 11 on the bearing frame 10 is buckled with the guide rail 103 in the backboard adjusting assembly, and a transmission system is formed by matching the adjuster 5, the driver 6 and the transmission belt 3, so that the bearing frame carrying backboard can move left and right as required.

Specifically, the adjustable backboard component comprises a bearing frame 10, wherein the bearing frame 10 is in a rectangular frame structure, and two opposite sides of the bearing frame 10 are respectively provided with a guide groove 11; that is, a guide groove 11 is provided at the top and bottom of the carrier 10, respectively, and the guide groove 11 is provided along the length direction of the carrier 10. In this embodiment, the cross section of the guide groove 11 is V-shaped.

The back plate 12 is arranged on the bearing frame 10, and the back plate 12 is detachably connected with the bearing frame 10 through screws.

The backboard adjusting assembly is in sliding connection with the bearing frame 10 and comprises an adjusting frame 1, a locker 2, a driving belt 3, an adjuster 5 and a driver 6. Specifically, the adjusting frame 1 is arranged in a rectangular frame; the adjustment frame 1 has a first end face 101 and a second end face 102 which are disposed opposite to each other. The adjusting frame 1 is formed by adopting numerical control machining of aluminum alloy plates.

A guide rail 103 is respectively arranged at the top and the bottom of the adjusting frame 1, and the guide rail 103 is correspondingly arranged with the guide groove 11. The guide rails 103 are arranged in a V shape and are arranged along the length direction of the adjusting frame 1, and the guide rails 103 at the top and the bottom of the adjusting frame 1 are arranged oppositely.

A plurality of mounting holes 107 for mounting the positioning pins 106 are provided on the adjustment frame 1; specifically, the mounting holes 107 are provided at the bottom of the adjusting frame 1, and in this embodiment, the number of the mounting holes 107 is 9, and the mounting holes are uniformly distributed along the length direction of the bottom of the adjusting frame 1. Each mounting hole 107 is correspondingly provided with a positioning pin 106, and the positioning pin 106 is connected with the mounting hole 107 through the tail threads thereof. The positioning pin 106 is used for installing and positioning the back plate adjusting assembly in the front insertion box and is formed by machining a stainless steel rod. The tail screw rod is arranged in the mounting hole 107 at the bottom of the adjusting frame 1, and four sides of the pin body are milled flat for clamping and screwing the wrench during mounting.

The locker 2 is detachably arranged on the first end face 101 of the adjusting frame 1 and is used for mounting and locking the adjustable backboard mechanism in the front inserting box; in this embodiment, the locking device 2 is provided in two pieces, and is disposed at the top of the first end face 101, and the two locking devices 2 are disposed along the length direction of the adjusting frame 1 and are disposed on the same straight line.

The locker 2 comprises a lock seat 21 detachably connected with the adjusting frame 1, a screw rod 22 arranged in the lock seat 21, and a first locking block 23 and a second locking block 24 arranged at two ends of the screw rod 22. Specifically, a plurality of combination holes are provided in the longitudinal direction of the lock base 21, and the lock base 21 is fixed to the adjustment frame 1 by a first countersunk screw penetrating through the combination holes. The lock seat 21 is formed by adopting numerical control machining of an aluminum alloy plate.

Square grooves 211 for locking and guiding the first locking block 23 and the second locking block 24 are arranged at two ends of the lock seat 21 in the length direction; i.e. two square grooves 211 are provided in one lock seat 21. The two ends of the screw 22 are respectively connected with the first locking piece 23 and the second locking piece 24 and then are arranged in the square groove 211. The length direction of each square groove 211 is provided with a first inclined surface 7, in this embodiment, the inclined angle of the first inclined surface 7 is 15 °, and the inclined direction faces the two ends of the lock base 21.

The lock seat 21 is also provided with a long round groove 212 for guiding and limiting the screw 22.

One end of the screw rod 22 is sleeved in the first locking block 23 to realize axial guiding; the other end is connected with the second locking block 24 through threads to form threaded transmission, so that locking and unlocking of the locker 2 are realized; the screw 22 is processed by a stainless steel rod; a cross groove is arranged at one end of the screw driver, so that the screw driver can be screwed.

The first locking piece 23 and the second locking piece 24 are respectively provided with a second inclined plane 8 attached to the first inclined plane 7, the second inclined plane 8 is inclined by 15 degrees, and locking and guiding are realized through the matching of the first inclined plane 7 and the second inclined plane 8.

In this embodiment, the first locking piece 23 and the second locking piece 24 are both formed by numerical control processing of aluminum alloy plates.

The transmission belt 3 is arranged on the second end surface 102 of the adjusting frame 1; a plurality of fixed pulleys 4 are provided on the circumferential side of the second end surface 102, and the belt 3 is connected to the adjustment frame 1 via the fixed pulleys 4.

Specifically, in this embodiment, the fixed pulleys 4 are five, four of which are disposed at four corners of the adjusting frame 1, and the other of which is disposed at a bottom middle position of the adjusting frame 1; the fixed pulley 4 is arranged on the second end face 102 of the adjusting frame 1 through a self-contained screw; the drive belt 3 is connected to five fixed pulleys 4.

The regulator 5 and the driver 6 are arranged at the top of the regulating frame 1 and are respectively connected with the driving belt 3; the positions of the regulator 5 and the driver 6 relative to the top of the regulating frame 1 are adjustable up and down.

Specifically, a first guide groove 104 for mounting the adjuster 5 and a second guide groove 105 for mounting the driver 6 are provided at the top of the adjustment frame 1; the first guide groove 104 is arranged at the center position of the top of the adjusting frame 1, and the first guide groove 104 is communicated with the first end face 101 and the second end face 102 of the adjusting frame 1; the second guide grooves 105 are symmetrically arranged at two sides of the first guide groove 104, namely, two second guide grooves 105 are arranged, and the second end face 102 of the adjusting frame 1 is communicated.

The adjuster 5 includes an adjusting seat 51 detachably connected to the first guide groove 104, specifically, a first counter bore is disposed at a position corresponding to the adjusting seat 51 and the first guide groove 104, and the adjusting seat 51 is installed in the first guide groove 104 by a second counter screw penetrating through the first counter bore. The adjusting seat 51 is formed by numerical control machining of aluminum alloy plates.

An adjustment pin 52 is provided in the adjustment seat 51; the adjusting pin 52 is disposed perpendicular to the adjusting seat 51. Specifically, the adjusting pin 52 penetrates into the adjusting seat 51 through the first end face 101 of the adjusting frame 1, and penetrates out from the second end face 102 of the adjusting frame 1. An adjusting wheel 53 is connected to the adjusting pin 52 at one end of the second end face 102, and the adjusting wheel 53 is connected to the belt 3. The adjustment wheel 53 is provided with a set screw 55 for tightening the adjustment wheel 53.

A retaining ring 54 is also provided on the adjustment pin 52, said retaining ring 54 being connected to the adjustment seat 51 and being arranged close to the end of the adjustment wheel 53.

The setting of the regulator 5 provides a power source for the backboard adjusting assembly; the adjusting pin 52 is screwed to drive the transmission system by the adjusting wheel 53, thereby realizing the displacement of the backboard in the left-right direction.

The adjusting wheel 53 is processed by stainless steel bars; is engaged with the tail of the adjusting pin 52 and is locked by a set screw 55. When in operation, the outer diameter of the adjusting wheel 53 is tightly contacted with the driving belt 3, and the driving belt 3 is driven to realize the adjusting function under the action of the twisting force of the adjusting pin 52.

The adjusting pin 52 is processed by stainless steel bars; the middle section shaft diameter is arranged in the adjusting seat 51, the tail shaft diameter is sleeved with the adjusting wheel 53, and the head is provided with an inner hexagonal counter bore, so that the screwing tool can be screwed conveniently.

The number of the drivers 6 is two, each driver 6 comprises a wheel seat 61 detachably connected with the second guide groove 105, specifically, a second counter bore is arranged at a position of the wheel seat 61 corresponding to the second guide groove 105, and the wheel seat 61 is installed in the second guide groove 105 through a third countersunk head screw penetrating through the second counter bore. The wheel seat 61 is formed by numerical control machining of an aluminum alloy plate.

A friction wheel 62 is connected at one end of the wheel seat 61 through threads; the friction wheel 62 is arranged outside the second guide groove 105, is positioned on the second end surface 102, and is connected with the driving belt 3. The friction wheel 62 drives the bearing frame to move leftwards or rightwards through the forward or reverse moment transmitted by the transmission belt 3, so that the left and right position adjustment of the backboard is realized.

The surface of the hub of the friction wheel 62 is made of silicone rubber, a sliding bearing is arranged in the hub, a cross screw groove is formed in the end of the mandrel, and the tail of the mandrel is provided with mounting threads.

The second end surface 102 of the adjusting frame 1 is also provided with a pressing wheel 9 connected with the driving belt 3; the pressing wheels 9 are arranged on two sides of the regulator 5 and the driver 6 respectively. Specifically, a group of pinch rollers 9 are respectively arranged on two sides of the friction roller 62 and the adjusting roller 53, and the pinch rollers 9 are connected with the adjusting frame 1 through self-contained screws and are connected with the driving belt 3.

In the utility model, when the driving belt 3 is sleeved on the fixed pulley 4, the adjusting wheel 53 and the friction wheel 62, the tightness is moderate, and the adjustment allowance is left. The pressing wheel 9 is used for pressing the driving belt 3, so that the driving belt 3 is kept in close contact with the adjusting wheel 53 and the friction wheel 62. The compression wheel 9 is internally provided with a sliding bearing, the end part of the mandrel is provided with a cross screw groove, and the tail part of the mandrel is provided with mounting threads.

The explosion diagram of the adjustable backboard mechanism for the VPX plug-in box is shown in fig. 2, and the assembly flow is as follows:

firstly, mounting a backboard adjusting assembly, specifically, mounting 5 fixed pulleys 4 on a second end face 102 of an adjusting frame 1; the driving belt 3 is wound on the fixed pulleys 4, the fixed pulleys 4 at four corners of the adjusting frame 1 are arranged at the inner side of the driving belt 3, and the fixed pulleys 4 at the bottom of the adjusting frame 1 are arranged at the outer side of the driving belt 3.

The pressing tight wheels 9 are respectively arranged on the second end surfaces 102 of the adjusting frames 1; the pinch rollers 9 are all arranged outside the transmission belt 3.

2 drivers 6 are respectively fixed in the second guide groove 105 by third countersunk screws, and the friction wheel 62 is required to be arranged on the inner side of the driving belt 3; the third countersunk head screw can not be screwed at the moment, so that the third countersunk head screw is guaranteed not to fall off, and the top surface of the driver 6 is basically flush with the top surface of the adjusting frame 1.

The adjuster 5 is fixed in the first guide groove 104 through a second countersunk screw, and the adjusting wheel 53 is required to be arranged outside the driving belt 3; the second countersunk head screw can not be screwed at the moment, so that the second countersunk head screw is guaranteed not to fall off and the top surface of the regulator 5 is basically flush with the top surface of the regulating frame 1.

Respectively installing 2 lockers 2 on a first end face 101 of an adjusting frame 1 by using first countersunk screws; during installation, the first locking block 23, the second locking block 24 and the screw 22 in the locker 2 are detached firstly, after the lock seat 21 is installed, the first locking block 23 and the second locking block 24 are connected with the screw 22 respectively, and then the locker is installed in the lock seat 21, and at the moment, the locker 2 needs to be kept in a unlocking state. 9 positioning pins 106 are respectively installed in the bottom installation of the adjusting frame 1, and all the positioning pins 106 are screwed. Then the guide groove 11 of the bearing frame 10 is buckled with the guide rail 103 of the backboard adjusting assembly, so that the relative positions of the adjusting frame 1 and the bearing frame 10 are ensured to be divided into left and right.

The third countersunk screw of the driver 6 is tightened to ensure that the outer cylindrical surface of the friction wheel 62 is in close contact with the top drive surface of the carrier 10. Tightening the second countersunk head screw of the adjuster 5 ensures that the outer cylindrical surface of the adjusting wheel 53 is tightly attached to the outer side surface of the driving belt 3, ensures that the outer cylindrical surface of the friction wheel 62 is tightly attached to the inner side surface of the driving belt 3, and ensures that the driving belt 3 is in a tensioning state.

The adjustment pins 52 in the adjuster 5 are turned clockwise and counterclockwise, respectively. Checking whether the adjusting wheel 53, the friction wheel 62, the pressing wheel 9 and the fixed pulley 4 rotate flexibly, and if the clamping phenomenon exists, replacing corresponding parts; whether the transmission of the adjusting wheel 53, the transmission belt 3 and the friction wheel 62 is normal or not is checked, whether the left-right displacement of the bearing frame 10 is smooth or not is checked, and if the displacement is abnormal, the adjusting driver 6 is provided with a third countersunk head screw until the third countersunk head screw is normal. Checking whether the driving belt 3 has slipping phenomenon, and turning the second countersunk head screw of the regulator 5 until the second countersunk head screw is normal if the driving belt has slipping phenomenon. Finally, the back plate 12 is mounted on the carrying frame 10 by screws.

The adjustable backboard mechanism can be used as a generalized module and used for VPX chassis with the same specification but different types of functions. The VPX chassis plug-in module accurate installation function is realized by adopting the backboard adjusting assembly technology.

The above description of the adjustable backboard mechanism for VPX plug-in box provided by the present utility model is detailed, and specific examples are applied to illustrate the structure and working principle of the present utility model, and the above description of the embodiments is only used to help understand the method and core idea of the present utility model. It should be noted that it will be apparent to those skilled in the art that various improvements and modifications can be made to the present utility model without departing from the principles of the utility model, and such improvements and modifications fall within the scope of the appended claims.

Claims (10)

1. An adjustable back plate mechanism for a VPX plug box, characterized in that: comprises a bearing frame (10), wherein a guide groove (11) and a backboard (12) are arranged on the bearing frame (10);

the backboard adjusting assembly comprises an adjusting frame (1) which is in sliding connection with the bearing frame (10), wherein the adjusting frame (1) is provided with a first end face (101) and a second end face (102) which are oppositely arranged; a guide rail (103) which is arranged corresponding to the guide groove (11) is arranged on the adjusting frame (1);

the locker (2) is detachably arranged on the first end face (101) of the adjusting frame (1);

the transmission belt (3) is arranged on the second end face (102) of the adjusting frame (1); a plurality of fixed pulleys (4) are arranged on the periphery of the second end face (102), and the driving belt (3) is connected with the adjusting frame (1) through the fixed pulleys (4);

the regulator (5) and the driver (6) are arranged at the top of the regulating frame (1) and are respectively connected with the driving belt (3); the positions of the regulator (5) and the driver (6) relative to the top of the regulating frame (1) are adjustable up and down.

2. An adjustable back plate mechanism for a VPX plug box according to claim 1, wherein: the locker (2) is arranged close to the top of the adjusting frame (1); the lock comprises a lock seat (21) detachably connected with an adjusting frame (1), a screw rod (22) arranged in the lock seat (21), and a first locking block (23) and a second locking block (24) arranged at two ends of the screw rod (22).

3. An adjustable back plate mechanism for a VPX plug box according to claim 2, wherein: square grooves (211) for locking and guiding a first locking block (23) and a second locking block (24) and long round grooves (212) for guiding and limiting a screw rod (22) are formed at two ends of the lock seat (21) in the length direction; a first inclined surface (7) is respectively arranged in each square groove (211).

4. An adjustable back plate mechanism for a VPX plug box according to claim 3, wherein: one end of the screw rod (22) is sleeved in the first locking block (23); the other end is connected with a second locking block (24) through threads; the first locking block (23) and the second locking block (24) are respectively provided with a second inclined plane (8) which is jointed with the first inclined plane (7).

5. An adjustable back plate mechanism for a VPX plug box according to claim 1, wherein: a first guide groove (104) for installing the adjuster (5) and a second guide groove (105) for installing the driver (6) are arranged at the top of the adjusting frame (1); the first guide groove (104) is arranged at the center of the top of the adjusting frame (1); the second guide grooves (105) are symmetrically arranged on two sides of the first guide groove (104).

6. An adjustable back plate mechanism for a VPX plug box according to claim 5, wherein: the adjuster (5) comprises an adjusting seat (51) detachably connected with the first guide groove (104), an adjusting pin (52) vertically connected with the adjusting seat (51), an adjusting wheel (53) connected with one end of the adjusting pin (52), a check ring (54) arranged on the adjusting pin (52) and connected with the adjusting seat (51), and a set screw (55) for fastening the adjusting wheel (53); the adjusting wheel (53) is arranged outside the first guide groove (104) and is connected with the driving belt (3).

7. An adjustable back plate mechanism for a VPX plug box according to claim 5, wherein: the driver (6) comprises a wheel seat (61) detachably connected with the second guide groove (105), and a friction wheel (62) in threaded connection with the wheel seat (61); the friction wheel (62) is arranged outside the second guide groove (105) and is connected with the driving belt (3).

8. An adjustable back plate mechanism for a VPX plug box according to claim 1, wherein: a pressing wheel (9) connected with the driving belt (3) is also arranged on the second end surface (102) of the adjusting frame (1); the pressing wheels (9) are arranged on two sides of the adjuster (5) and the driver (6) in a group.

9. An adjustable back plate mechanism for a VPX plug box according to claim 1, wherein: the fixed pulleys (4) are respectively arranged at four corners of the adjusting frame (1) and at the middle position of the bottom.

10. An adjustable back plate mechanism for a VPX plug box according to claim 1, wherein: a plurality of mounting holes (107) for mounting the positioning pins (106) are provided in the adjustment frame (1).