CN111237595A

CN111237595A - Mounting hanger for multi-station conference projection equipment

Info

Publication number: CN111237595A
Application number: CN202010040127.1A
Authority: CN
Inventors: 乔正全
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-01-15
Filing date: 2020-01-15
Publication date: 2020-06-05

Abstract

The invention discloses an installation hanging bracket for multi-station conference projection equipment, relates to the technical field of projection fixing brackets, and solves the problems that a lens dustproof cover plate is mostly fixedly arranged in the existing installation hanging bracket, the installation hanging bracket cannot be suitable for sealing lenses at different opening positions on projectors of different models, and the application is single. The utility model provides an installation gallows for multistation projection equipment, includes flexible jib, presss from both sides the fence, props the bracket, electromagnetism push rod and top inserted bar, flexible jib is including the location voussoir, flexible jib is the flexible setting of syllogic piston, and the back bottom side position symmetry protrusion of its outmost square rod cover has two location voussoirs, and the bottom welded fastening of the most inboard piston square bar of flexible jib has a location axle sleeve. According to the invention, the two top inserting rods are in top sliding fit with the inclined planes of the two positioning wedge blocks, so that the support bracket and the outer layer square rod sleeve of the telescopic suspension rod can be automatically inserted and positioned together, and the telescopic suspension rod is kept in a contracted state.

Description

Mounting hanger for multi-station conference projection equipment

Technical Field

The invention relates to the technical field of projection fixing frames, in particular to an installation hanging frame for multi-station conference projection equipment.

Background

The rapid development of modern information processing technology and the higher and higher requirements for the modernization of conference rooms have led to the gradual evolution of conference rooms from a single communication place mainly for listening, listening and listening to information resources, and a plurality of electronic devices such as slide projectors, video recording and reproducing devices, sound amplifying devices and the like, which enter the conference places, so that the configuration of conference systems is more and more professional and the functions are more and more powerful.

In some large conference rooms or auditoriums, the projection device is typically mounted on top of the room. This requires a mounting cradle. For example, patent No. CN201420797742.7 discloses a height and angle adjustable projector hanger. The projector hanging bracket comprises a square plate-shaped base, a projector fixing plate, a height adjusting device and an angle adjusting device, wherein the square plate-shaped base is arranged at the upper part of the hanging bracket, the projector fixing plate is arranged at the lower part of the hanging bracket, and a metal rod with a hole at the upper end is vertically fixed upwards at the central position of the projector fixing plate; the height adjusting device is composed of two threaded rods, a metal plate with three circular holes arranged in a straight line and two nuts, the upper ends of the two threaded rods are fixed below the square plate-shaped base, the lower ends of the two threaded rods respectively penetrate through the circular holes on the two sides of the metal plate, and the two nuts are respectively screwed at the lower ends of the two threaded rods and the lower surface of the metal plate; the angle adjusting device consists of the metal rod with the hole at the upper end, the metal plate with the three circular holes arranged in a straight line and a pin, wherein the upper end of the metal rod with the hole at the upper end passes through the circular hole in the middle of the metal plate, and the pin is inserted into the small hole at the upper end of the metal rod.

The universality is lower in the existing installation hanging bracket, most of the existing installation hanging bracket is specially matched with a projector of a certain model for customization, the projector can only be fixedly installed with one specification, the lens dustproof cover plate is mostly fixedly arranged, the existing installation hanging bracket cannot be suitable for different lenses which are arranged at different positions on different models of projectors of the sealing cover, the application is single, personnel are required to ascend to height and can be detached to obtain the projection equipment for maintenance and cleaning, the ascending operation is complex and inconvenient, and the problem of certain potential safety hazard is solved.

Disclosure of Invention

The invention aims to provide an installation hanging bracket for multi-station conference projection equipment, and aims to solve the problems that the universality is low, the installation hanging bracket is mainly matched and customized for a projector with a certain model, only the projector with one specification can be fixedly installed, a lens dustproof cover plate is mostly fixedly arranged, the installation hanging bracket cannot be suitable for sealing lenses at different opening positions on projectors with different models, the application is single, in addition, personnel can only ascend to disassemble and take the projection equipment for maintenance and cleaning, the ascending operation is complicated and inconvenient, and certain potential safety hazards exist.

In order to achieve the purpose, the invention provides the following technical scheme: an installation hanging bracket for multi-station conference projection equipment comprises a telescopic hanging rod, a clamping fence, a support bracket, an electromagnetic push rod and a top insertion rod, wherein the telescopic hanging rod comprises positioning wedge blocks, the telescopic hanging rod is in three-section type piston telescopic arrangement, two positioning wedge blocks are symmetrically protruded at the bottom side position of the back of a square rod sleeve at the outermost layer of the telescopic hanging rod, and a positioning shaft sleeve is fixedly welded at the bottom of a piston square rod at the innermost side of the telescopic hanging rod; the clamping rails are symmetrically and slidably arranged at two positions in an L-shaped shape, and the projector is clamped and fixed between the two clamping rails; the electromagnetic push rod comprises a mounting supporting plate, the electromagnetic push rod is locked and clamped at the top end of the mounting supporting plate, and the front end of the mounting supporting plate is provided with a mounting ring in a penetrating and rotating manner; the support bracket is integrally in an I-shaped welding shape, the bottom of the middle longitudinal support plate is rotatably provided with a rotating wheel, the front end and the rear end of the longitudinal support plate are symmetrically welded with two lug blocks in a hanging manner, and the pushing screw rod is rotatably inserted and arranged on the two lug blocks; the top inserted rod comprises two expanding support rods, the head end sections of the two top inserted rods are obliquely planed and cut, the tail end sections of the two top inserted rods are L-shaped bent, and the two expanding support rods are rotatably connected with the tail ends of the two L-shaped bent plates.

Preferably, prop the bracket and include L form bracing piece, installing frame and adjusting screw, prop the symmetrical support of rear end of bracket and have two L form bracing pieces, the head end of these two L form bracing pieces supports the welding and has a installing frame, and adjusting screw just runs through to change and inserts on the head end axle collar of fagging about the installing frame.

Preferably, the mounting ring comprises a cover plate, a swinging plate and a torsion spring, the swinging plate which is obliquely supported is welded on the rotating mounting plate at the top end of the mounting ring, the left end of the rotating insertion shaft of the mounting ring penetrates and protrudes outwards, and the protruding shaft section is elastically connected with a shaft collar at the front end of the mounting supporting plate through the torsion spring sleeved on the protruding shaft section; a round sponge cushion is adhered to the front end of the cover plate, and the cover plate is inserted on the mounting ring in a pushing and penetrating manner through six short shaft springs annularly supported on the back of the cover plate.

Preferably, the electromagnetic push rod is powered by a USB, and the piston telescopic rod of the electromagnetic push rod can be abutted and contacted with the swinging plate when extending out; the bottom of the middle section of the mounting supporting plate is welded with a threaded sleeve downwards, the threaded sleeve is meshed with a sleeve sliding on the adjusting screw rod, and the rear end of the mounting supporting plate is fixedly welded with a shaft sleeve sliding sleeve on a polished rod shaft welded and supported on the top end of the mounting frame.

Preferably, the rotating wheel comprises a connecting rod, a positioning block and a push rod, the two clamping fences are sleeved on the front transverse supporting rod and the rear transverse supporting rod of the supporting bracket in a left-right corresponding manner, the outer ring of the rotating wheel is connected with the two connecting rods in a left-right corresponding manner, and the tail ends of the two connecting rods are respectively connected with the two clamping fences in a rotating manner; the positioning block meshing sleeve slides on the pushing screw rod, the top end of the positioning block is rotatably connected with a push rod, and the other end of the push rod is rotatably connected to the outer ring of the rotating wheel.

Preferably, the positioning shaft sleeve comprises a vertical supporting shaft rod and a top pushing plate, the positioning shaft sleeve is positioned between the tail end sections of the two L-shaped supporting rods through a bolt penetrating and locking, and the positioning shaft sleeve is welded and supported with the rear transverse supporting rod of the supporting bracket; the back of the positioning shaft sleeve is fixedly welded with a vertical support shaft rod, and the pushing plate is slidably arranged on the vertical support shaft rod through the spring pushing sleeve.

Preferably, the two top inserted rods penetrate through and are inserted into the two protruding blocks on the vertical plate sections of the two L-shaped supporting rods and shrink along with the upward sliding of the supporting bracket and the telescopic hanging rod, and the inclined sections at the head ends of the two top inserted rods can be correspondingly matched with the inclined surfaces of the two positioning wedge blocks in a top sliding manner.

Preferably, the top pushing plate is formed by welding a front ear plate and a rear ear plate, two connecting short shafts are symmetrically supported between the two ear plates, and the tail ends of the two expanding support rods are rotatably sleeved on the two connecting short shafts.

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

1. the rotating wheel, the connecting rod, the positioning block and the push rod jointly form a crank connecting rod rotating and clamping mechanism, and the positioning block can slide forwards by clockwise screwing the pushing screw rod through the crank connecting rod rotating and clamping mechanism and can push and rotate the rotating wheel through the push rod, so that the rotating wheel can drive two clamping fences to relatively slide through the two connecting rods and is suitable for clamping projection equipment with different fixed width specifications;

2. the adjusting screw is screwed to push the mounting support plate and the electromagnetic push rod to slide left and right, so that the position of the mounting ring is changed, the cover plate can be suitable for being blocked on lenses at different positions on projectors of different brands and models, and the application is wide.

3. The cover plate is used together with the spring pushing installation and matching of the circular spongy cushion, the lens can be buffered and protected when the installation ring is turned over and closed, and the lens is prevented from being damaged by the instantaneous turning impact force oscillation of the installation ring

4. The two expanding support rods and the two pushing and inserting rods jointly form the double-connecting-rod sliding block expanding mechanism, the support bracket can be loosened simply and quickly by only holding the long stick to poke the pushing and pushing plate upwards through the expanding support mechanism, the height of the projector is reduced, the projector can be conveniently maintained and replaced by people, the lens is convenient to clean, the trouble of manually ascending the height to detach the projector is avoided, and the potential safety hazard caused by ascending operation is avoided.

Drawings

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

FIG. 2 is a schematic three-dimensional structure of the present invention;

FIG. 3 is a schematic bottom three-dimensional structure of the present invention;

FIG. 4 is a bottom view of the support bracket of the present invention;

FIG. 5 is a structural diagram of the cradle in a turned state according to the present invention;

FIG. 6 is a schematic view of the sliding installation of two top rods according to the present invention;

FIG. 7 is a schematic view of a positioning sleeve according to the present invention;

FIG. 8 is a schematic three-dimensional structure of the positioning sleeve of the present invention;

FIG. 9 is a schematic view of a mounting ring configuration of the present invention;

fig. 10 is a schematic three-dimensional structure of the mounting ring of the present invention.

In the figure: 1. a telescopic boom; 101. positioning a wedge block; 2. a projector; 3. clipping the fence; 4. a mounting ring; 401. a cover plate; 402. a swinging plate; 403. a torsion spring; 5. a rotating wheel; 501. a connecting rod; 502. positioning blocks; 503. a push rod; 6. a support bracket; 601. an L-shaped support bar; 602. installing a frame; 603. adjusting the screw rod; 7. an electromagnetic push rod; 701. mounting a supporting plate; 8. positioning the shaft sleeve; 801. a vertical support shaft lever; 802. pushing the plate; 9. a top inserted link; 901. expanding a support rod; 10. pushing the screw rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings 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 of the embodiments.

Referring to fig. 1 to 10, an embodiment of the present invention includes: an installation hanging bracket for multi-station conference projection equipment comprises a telescopic suspender 1, a clamping fence 3, a support bracket 6, an electromagnetic push rod 7 and a top inserted rod 9, wherein the telescopic suspender 1 comprises positioning wedge blocks 101, the telescopic suspender 1 is in three-section type piston telescopic arrangement, two positioning wedge blocks 101 are symmetrically protruded at the bottom side position of the back of an outmost square rod sleeve, and a positioning shaft sleeve 8 is welded and fixed at the bottom of an innermost piston square rod of the telescopic suspender 1; the two clamping rails 3 are symmetrically and slidably arranged in an L-shaped shape, and the projector 2 is clamped and fixed between the two clamping rails 3; the electromagnetic push rod 7 comprises a mounting supporting plate 701, the electromagnetic push rod 7 is locked and clamped at the top end of the mounting supporting plate 701, and the front end of the mounting supporting plate 701 penetrates through and is rotatably inserted with a mounting ring 4; the support bracket 6 is integrally in an I-shaped welding shape, the bottom of the middle longitudinal support plate is rotatably provided with a rotating wheel 5, the front end and the rear end of the longitudinal support plate are symmetrically welded with two lug blocks in a hanging manner, and the pushing screw rod 10 is rotatably inserted and arranged on the two lug blocks; the top inserted rod 9 comprises expanding support rods 901, the head end sections of the two top inserted rods 9 are obliquely planed and cut, the tail end sections of the top inserted rods are L-shaped bent, and the two expanding support rods 901 are rotatably connected with the tail ends of the two L-shaped bent plates; the supporting bracket 6 comprises an L-shaped supporting rod 601, a mounting frame 602 and an adjusting screw 603, the rear end of the supporting bracket 6 is symmetrically supported with two L-shaped supporting rods 601, the head ends of the two L-shaped supporting rods 601 are supported and welded with one mounting frame 602, and the adjusting screw 603 is inserted through the head end shaft collars of the left and right supporting plates of the mounting frame 602; the positioning shaft sleeve 8 comprises a vertical supporting shaft rod 801 and a top pushing plate 802, the positioning shaft sleeve 8 penetrates through and is locked and positioned between the tail end sections of the two L-shaped supporting rods 601 through one bolt, and the positioning shaft sleeve 8 and the rear end transverse supporting rod of the supporting bracket 6 are welded and supported together; a vertical support shaft rod 801 is fixedly welded on the back of the positioning shaft sleeve 8, and the pushing plate 802 is slidably arranged on the vertical support shaft rod 801 through a spring pushing sleeve; the specific brand of the electromagnetic push rod 7 is as follows: electromagnetic king series, the model is: voltages DC6V or 12V or AC 220V; further, the mounting ring 4 comprises a cover plate 401, a swinging plate 402 and a torsion spring 403, the swinging plate 402 which is obliquely supported is welded on the rotary connecting mounting plate at the top end of the mounting ring 4, the left end of the rotary inserting shaft of the mounting ring 4 penetrates and protrudes outwards, and the protruding shaft section is elastically connected with a shaft collar at the front end of the mounting supporting plate 701 through the torsion spring 403 which is sleeved on the protruding shaft section; a round foam-rubber cushion is adhered to the front end of the cover plate 401, six short shaft spring thrusters supported by the cover plate 401 through a back ring are inserted into the mounting ring 4 in a penetrating mode, the cover plate 401 and the round foam-rubber cushion on the cover plate can shield and cover the lens of the projection device, the problem that the lens is long opened and is exposed and accumulated with excessive dust is avoided, the trouble of frequent cleaning is caused, the cover plate 401 is used together with the round foam-rubber cushion mounted and matched through spring thrusting, the lens can be buffered and protected when the mounting ring 4 is turned over and closed, and the lens is prevented from being damaged by the instantaneous turning impact force oscillation of the mounting ring 4.

Further, the electromagnetic push rod 7 is powered by a USB, and the telescopic rod of the piston can be abutted and contacted with the swing plate 402 when extending out; a threaded sleeve is welded downwards at the bottom of the middle section of the mounting support plate 701, the threaded sleeve is in sliding fit with the adjusting screw 603, a shaft sleeve fixed at the rear end of the mounting support plate 701 in a welding mode is in sliding fit with a polish rod shaft supported at the top end of the mounting frame 602 in a welding mode, and the electromagnetic push rod 7 can push and control the mounting ring 4 and the cover plate 401 to be opened and closed; further, the rotating wheel 5 comprises a connecting rod 501, a positioning block 502 and a push rod 503, the two clamping fences 3 are correspondingly sleeved on the front and rear transverse supporting rods of the supporting bracket 6 in a left-right manner, the two connecting rods 501 are correspondingly connected to the outer circular ring of the rotating wheel 5 in a left-right manner, and the tail ends of the two connecting rods 501 are respectively and rotatably connected with the two clamping fences 3; the positioning block 502 is engaged with the pushing screw 10 in a sliding manner, the top end of the positioning block 502 is rotatably connected with a push rod 503, the other end of the push rod 503 is rotatably connected to an outer ring of the rotating wheel 5, the connecting rod 501, the positioning block 502 and the push rod 503 jointly form a crank-connecting rod rotating and clamping mechanism, by the crank-connecting rod rotating and clamping mechanism, the clockwise screwing of the pushing screw 10 can enable the positioning block 502 to slide forwards and push the rotating wheel 5 through the push rod 503, so that the rotating wheel 5 can drive the two clamping fences 3 to slide relatively through the two connecting rods 501 to be suitable for clamping projection equipment with different fixed width specifications; two top inserted rods 9 penetrate through and are inserted into two protruding blocks on the vertical plate sections of the two L-shaped supporting rods 601 and contract along with the upward sliding of the support bracket 6 and the telescopic suspender 1, the head end inclined sections of the two top inserted rods 9 can be correspondingly matched with the inclined plane tops of the two positioning wedges 101 in a sliding manner, when the support bracket 6 drives the telescopic suspender 1 to contract and slide upwards, the support bracket 6 and the outer layer square rod sleeve of the telescopic suspender 1 can be automatically inserted and positioned together through the matching of the two top inserted rods 9 and the inclined plane tops of the two positioning wedges 101, and the telescopic suspender 1 is kept in a contracted state (shown in figure 1); the pushing plate 802 is formed by welding a front ear plate and a rear ear plate, two connecting short shafts are symmetrically supported between the two ear plates, the tail ends of the two expanding rods 901 are rotatably sleeved on the two connecting short shafts, the pushing plate 802, the two expanding rods 901 and the two pushing rods 9 jointly form a double-connecting-rod sliding block expanding mechanism, and the expanding mechanism can simply and quickly complete the loosening operation of the supporting bracket 6 only by holding a long rod to poke the pushing plate 802 upwards, so that the height of the projector 2 is reduced, and personnel can reach the projector 2 to conveniently maintain and replace the projector;

in the invention, the rotation opening and closing principle of the cover plate 401 is as follows: when the projector 2 is in a shutdown state, the electromagnetic push rod 7 is in a power-off state, the piston telescopic rod slides out and extends forwards, the swing plate 402 is pushed forwards to rotate, the mounting ring 4 and the cover plate 401 are turned over and closed (as shown in fig. 1), when the projector 2 is started, the USB starts to supply power to the electromagnetic push rod 7, the telescopic rod is plugged into the USB to slide back and contract, the mounting ring 4 loses a top support, and the torsion spring 403 can be twisted upwards to expose and open the lens.

Descending operation flow of projector 2: it just needs handheld long rod to stab push-off push pedal 802 upwards and just can make two expand vaulting pole 901 to the outside swing and two positions of interlock top inserted bar 9 take out with two location voussoir 101 and take off and separate, the side is accomplished and is taken off to the pine of propping bracket 6, make support bracket 6 and projecting apparatus 2 can drive flexible jib 1 and stretch out and slide downwards, reduce the height (as shown in figure 2) of projecting apparatus 2, and then personnel can reach projecting apparatus 2 and conveniently maintain it and change, notice that the long rod of handing at the gliding in-process should continue to push up and arrange in push pedal 802 and go on carrying out the gliding speed limit to projecting apparatus 2, avoid projecting apparatus 2 gravity nature whereabouts to drag flexible jib 1 and break and cause self oscillation damage.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides an installation gallows for multistation meeting projection equipment which characterized in that: the telescopic lifting rod comprises a telescopic lifting rod (1), a clamping rail (3), a support bracket (6), an electromagnetic push rod (7) and a top insertion rod (9), wherein the telescopic lifting rod (1) comprises positioning wedges (101), the telescopic lifting rod (1) is arranged in a three-section type piston telescopic mode, two positioning wedges (101) are symmetrically protruded at the bottom side of the back of a square rod sleeve at the outermost layer, and a positioning shaft sleeve (8) is fixedly welded at the bottom of a piston square rod at the innermost layer of the telescopic lifting rod (1); the clamping rails (3) are symmetrically and slidably arranged at two positions in an L-shaped shape, and the projector (2) is clamped and fixed between the two clamping rails (3); the electromagnetic push rod (7) comprises a mounting supporting plate (701), the electromagnetic push rod (7) is locked and clamped at the top end of the mounting supporting plate (701), and the front end of the mounting supporting plate (701) penetrates through and is rotatably inserted with a mounting ring (4); the support bracket (6) is integrally in an I-shaped welding shape, the bottom of the middle longitudinal support plate is rotatably provided with a rotating wheel (5), the front end and the rear end of the longitudinal support plate are symmetrically welded with two lug blocks in a hanging manner, and the pushing screw (10) is rotatably arranged on the two lug blocks in an inserting manner; the top inserted rod (9) comprises expanding support rods (901), the head end sections of the two top inserted rods (9) are obliquely planed and cut, the tail end sections of the top inserted rods are L-shaped folding and turning, and the two expanding support rods (901) are rotatably connected with the tail ends of the two L-shaped folding and turning plates.

2. The mounting bracket for the multi-station conference projection equipment as claimed in claim 1, wherein: prop bracket (6) and include L form bracing piece (601), installing frame (602) and adjusting screw (603), the rear end symmetry that props bracket (6) supports has two L form bracing pieces (601), and the head end support welding of these two L form bracing pieces (601) has a installing frame (602), and adjusting screw (603) just run through to change and insert on the head end axle collar of fagging about installing frame (602).

3. The mounting bracket for the multi-station conference projection equipment as claimed in claim 1, wherein: the mounting ring (4) comprises a cover plate (401), a swinging plate (402) and a torsion spring (403), the swinging plate (402) which is obliquely supported is welded on the rotary connecting mounting plate at the top end of the mounting ring (4), the left end of the rotary inserting shaft of the mounting ring (4) penetrates outwards and protrudes, and the protruding shaft section is elastically connected with a shaft collar at the front end of the mounting supporting plate (701) through the torsion spring (403) sleeved on the protruding shaft section; a round sponge cushion is adhered to the front end of the cover plate (401), and the cover plate (401) is pushed by six short shaft springs annularly supported by the back of the cover plate to penetrate through the mounting ring (4).

4. The mounting bracket for the multi-station conference projection equipment as claimed in claim 1, wherein: the electromagnetic push rod (7) is powered by a USB, and a piston telescopic rod of the electromagnetic push rod can be abutted against and contacted with the swinging plate (402) when extending out; the bottom of the middle section of the mounting supporting plate (701) is welded with a threaded sleeve downwards, the threaded sleeve is slipped on the adjusting screw rod (603), and a shaft sleeve welded and fixed at the rear end of the mounting supporting plate (701) is slipped on a polish rod shaft welded and supported at the top end of the mounting frame (602).

5. The mounting bracket for the multi-station conference projection equipment as claimed in claim 1, wherein: the rotating wheel (5) comprises a connecting rod (501), a positioning block (502) and a push rod (503), the two clamping fences (3) are sleeved on the front transverse supporting rod and the rear transverse supporting rod of the supporting bracket (6) in a left-right corresponding mode, the outer circular ring of the rotating wheel (5) is connected with the two connecting rods (501) in a left-right corresponding mode in a rotating mode, and the tail ends of the two connecting rods (501) are respectively connected with the two clamping fences (3) in a rotating mode; the positioning block (502) is engaged with the pushing screw (10) in a sliding manner, the top end of the positioning block (502) is rotatably connected with a push rod (503), and the other end of the push rod (503) is rotatably connected to the outer ring of the rotating wheel (5).

6. The mounting bracket for the multi-station conference projection equipment as claimed in claim 1, wherein: the positioning shaft sleeve (8) comprises a vertical supporting shaft rod (801) and a top pushing plate (802), the positioning shaft sleeve (8) is positioned between the tail end sections of two L-shaped supporting rods (601) through a bolt in a penetrating and locking mode, and the positioning shaft sleeve (8) is welded and supported with the rear end transverse supporting rod of the supporting bracket (6); the back of the positioning shaft sleeve (8) is fixedly welded with a vertical support shaft rod (801), and the pushing plate (802) is slidably arranged on the vertical support shaft rod (801) through a spring pushing sleeve.

7. The mounting bracket for the multi-station conference projection equipment as claimed in claim 1, wherein: the two top inserted rods (9) penetrate through and are inserted into two protruding blocks on the vertical plate sections of the two L-shaped supporting rods (601) and shrink along with the upward sliding of the supporting bracket (6) and the telescopic suspender (1), and the inclined sections at the front ends of the two top inserted rods (9) can be correspondingly matched with the inclined surfaces of the two positioning wedges (101) in a top sliding manner.

8. The mounting bracket for the multi-station conference projection equipment as claimed in claim 6, wherein: the top pushing plate (802) is formed by welding a front ear plate and a rear ear plate, two connecting short shafts are symmetrically supported between the two ear plates, and the tail ends of the two expanding support rods (901) are rotatably sleeved on the two connecting short shafts.