CN218826125U - Post information bulletin board - Google Patents

Abstract

The utility model provides a sign information bulletin board relates to construction management technical field, include: a fixed seat; an auxiliary groove is formed in the fixed seat; a control rod is rotationally connected with the top end surface of the fixed seat; a telescopic supporting rod is connected in the top end face of the control rod in a sliding manner; the top end surface of the telescopic supporting rod is fixedly connected with a connecting bottom plate; the rear part of the top end surface of the connecting bottom plate is fixedly connected with a public display plate; the top end face of the public display plate is fixedly connected with a connecting top plate; the connecting top plate is aligned with the connecting bottom plate. Pull out the back staff with the rack and will sign in the standing groove and then loosen supplementary handle and make the rack reset along with supporting spring's resilience and accomodate into the mount with sign information, solved the sign information of pasting using glue and in changing, glue pasted part is remained easily and is needed the staff to carry out the great problem of secondary clearance messenger staff's intensity of labour to remaining sign information on the bulletin board.

Description

Post information bulletin board

Technical Field

The utility model relates to a construction management technical field, in particular to sign information bulletin board.

Background

In order to facilitate posting of the bid-inviting information at a place with a large flow of people, workers typically post the bid-inviting information by using a bulletin board, and then post the bulletin board with the bid-inviting information to a place with a large flow of people to post the bid-inviting information.

For example: the utility model discloses a utility model with application number CN202121159257.3 discloses a bulletin board for engineering cost, specifically include two support columns, two support column top fixedly connected with canopy, the equal fixedly connected with connecting axle in one side that two support columns are relative, one side fixedly connected with bulletin frame of keeping away from the support column of connecting axle, the bulletin frame openly is provided with first bulletin board, the bulletin frame back is equipped with the second bulletin board, the bottom fixedly connected with I type base of two support columns, through being equipped with solar photovoltaic board and light, it is energy-concerving and environment-protective to make things convenient for while reading, realized the function of clearing up glass surface spot fast through setting up cleaning device, two bulletin boards have been set up simultaneously, first bulletin board is used for pasting the small-size file drawing, can also carry out the comment explanation on the blackboard, in time solve the problem that meets in the engineering, the second bulletin board is used for showing large-scale poster, make little detail more outstanding eye, and division door class show, make whole effect clear and pleasing to the eye.

However, in the conventional bulletin board, when posting the bidding information, glue is generally applied to the back of the bidding information and then the bidding information with the glue is pasted on the bulletin board, but it is a lot of time wasted by repeatedly applying the glue when posting a plurality of pieces of bidding information, and when the bidding information posted by using the glue is replaced, the glue-pasted part is easy to remain on the bulletin board, and a worker is required to perform secondary cleaning on the residual bidding information, so that the labor intensity of the worker is high.

SUMMERY OF THE UTILITY MODEL

In view of the above, the utility model provides a signboard information bulletin board, it has the mount that need not use glue also can paste the signboard information on the bulletin board fast, pulling the auxiliary handle makes the rack slide in the mount, can make the spacing slider slide and extrude supporting spring in the spacing spout in the slip process of rack, the staff puts the signboard information into the rack after pulling out the rack, then loosens the auxiliary handle, the spacing slider can reset and drive the rack to reset along with the resilience of supporting spring and accomodate the signboard information into the mount at this moment, when the rack withdraws the mount, the inner wall of mount can extrude the auxiliary rod to make the auxiliary rod slide and extrude reset spring in the rack; slip through the auxiliary rod drives the clamp plate and slides in the standing groove and carry out spacing fixed to the information of calling out the tender of placing in the standing groove, prevent to call out the tender information and influence the personnel of calling out watching of calling out the tender at the folding phenomenon of the in-process fold of public notice, do not need the staff to paint glue at the back of the information of calling out the tender and paste up the information of calling out the tender, reduce staff's intensity of labour, improve staff's work efficiency, the information of calling out the tender of having avoided using glue to paste up simultaneously deposits remaining condition easily when changing.

The utility model provides a sign information bulletin board specifically includes: a fixed seat; an auxiliary groove is formed in the fixed seat; a control rod is rotationally connected with the top end surface of the fixed seat; a telescopic supporting rod is connected in the top end face of the control rod in a sliding manner; the top end surface of the telescopic supporting rod is fixedly connected with a connecting bottom plate; the rear part of the top end surface of the connecting bottom plate is fixedly connected with a display plate; the top end surface of the public display plate is fixedly connected with a connecting top plate; the connecting top plate is aligned with the connecting bottom plate; the top end surface of the connecting top plate is fixedly connected with a rain shield; the front part of the top end surface of the connecting bottom plate is centrally provided with an installation chute; a guide chute is arranged in the middle of the front part of the bottom end surface of the connecting top plate; the guide chute is aligned with the mounting chute.

Optionally, a first transmission gear is fixedly connected to the lower part of the outer wall of the control rod; a first driving motor is fixedly connected to the right bolt of the bottom end surface of the auxiliary groove; the top end face of the first driving motor is coaxially connected with a second transmission gear; the second transmission gear is meshed with the first transmission gear.

Optionally, a control screw is rotatably connected in the control rod; the telescopic support rod is in threaded connection with the outer wall of the control screw rod; the bottom end face of the control screw is fixedly connected with a first transmission bevel gear; the first transmission bevel gear is rotationally connected in the lower part of the control rod; a second transmission bevel gear is rotationally connected to the lower right part of the control rod; the second transmission bevel gear is meshed with the first transmission bevel gear; the right end face of the second transmission bevel gear is coaxially connected with an operating handle.

Optionally, six fixing frames are fixedly connected to the front end surface of the public board in a rectangular array; the inner walls of the six fixing frames are provided with a group of limiting sliding chutes; the front end surfaces of the six fixing frames are fixedly connected with a transparent plastic plate; a placing rack is connected in each of the six fixing frames in a sliding manner; the left end faces of the six placing racks and the right end faces of the six placing racks are fixedly connected with a group of limiting slide blocks; the six groups of limiting sliding blocks are respectively connected in the six groups of limiting sliding chutes in a sliding manner; the top end surfaces of the six groups of limiting sliding blocks are fixedly connected with a group of supporting springs; the tail ends of the six groups of supporting springs are fixedly connected to the top end surfaces of the six groups of limiting chutes; the rear parts of the top end surfaces of the six placing racks are fixedly connected with an auxiliary handle.

Optionally, a placing groove is formed in each of the top end faces of the six placing racks; a group of clamping plates are symmetrically and slidably connected in the six placing grooves; the front end surfaces of the six groups of clamping plates are fixedly connected with a group of auxiliary rods in the middle; the six groups of auxiliary rods are all cylindrical rod-shaped structures with auxiliary balls arranged on the front end faces; the six groups of auxiliary rods are respectively connected in the front end faces of the six placing racks in a sliding manner; a group of reset springs are symmetrically and fixedly connected in the front end faces of the six placing racks; the tail ends of the six groups of reset springs are respectively and fixedly connected to the front end faces of the six groups of auxiliary rods.

Optionally, a second driving motor is fixedly connected to the front part of the left end face of the connecting bottom plate through a bolt; the right end face of the second driving motor is coaxially connected with an auxiliary screw rod; the auxiliary screw rod is rotatably connected in the mounting chute; a sliding plate is connected in the mounting chute in a sliding manner; the upper part of the sliding plate is connected in the guide sliding chute in a sliding way; the lower part of the sliding plate is in threaded connection with the outer wall of the auxiliary screw rod; the rear end face of the sliding plate is fixedly connected with a cleaning brush.

Advantageous effects

The utility model discloses the in-process staff who uses need not paint glue and also can will sign the sign information and post fast on the public notice board and have avoided using glue to put up sign information when changing to have remained the condition easily, the operation is simple swift more, it is more convenient to use, reduce staff's intensity of labour, improve staff's work efficiency, secondly can carry out spacing fixed to sign information after putting up sign information to the public notice board automatically, prevent that sign information from influencing the watching of sign personnel to sign information at the folding phenomenon of in-process fold of public notice, improve the practicality of public notice board.

In addition, make the rack slide in the mount through the supplementary handle of pulling, can make spacing slider slide and extrude supporting spring in spacing spout at the gliding in-process of rack, the staff will call the mark information place the standing groove after pulling out the rack, then loosen supplementary handle and make the rack reset along with supporting spring's resilience and accomodate into the mount with calling the mark information, transparent plastic board side through terminal surface before the mount can observe calling the mark information, easy operation is swift, do not need the staff to paint glue at calling the mark information back and paste up calling the mark information, reduce staff's intensity of labour, improve staff's work efficiency, the calling mark information that has also avoided using glue to paste up simultaneously exists remaining condition easily when changing.

In addition, when the placing rack is retracted into the fixing frame, the inner wall of the fixing frame can extrude the auxiliary rod to enable the auxiliary rod to slide in the placing rack and extrude the return spring; the slip through the auxiliary rod drives the clamp plate and slides in the standing groove and carries out spacing fixed to the bidding information of placing in the standing groove, prevents to bid the folding phenomenon of fold of information at the in-process of public notice and influences the observation of bidding personnel to bidding information, has played effectual guard action to the bidding information of placing in the standing groove simultaneously, avoids touching down and dropping at wind-force when great or the watcher.

In addition, through starting first driving motor, make first driving motor drive second drive gear and rotate, drive first drive gear through second drive gear's rotation and rotate, and then drive the control lever through first drive gear and rotate, make things convenient for the staff to carry out the rotation show of multi-angle to the information of inviting the mark, increase the public effect of inviting the information of inviting the mark.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.

The drawings in the following description relate to only some embodiments of the invention and are not intended to limit the invention.

In the drawings:

fig. 1 is a schematic view of the axial measurement structure of the present invention.

Fig. 2 is a schematic view of the bottom view of the axial measurement structure of the present invention.

Fig. 3 is a schematic sectional view of the present invention.

Fig. 4 is a schematic view of the cross-sectional axial measurement structure of the present invention.

Fig. 5 is a schematic sectional view of the connection bottom plate of the present invention.

Fig. 6 is a schematic cross-sectional structure view of the fixing frame of the present invention.

List of reference numerals

1. A fixed seat; 101. an auxiliary groove; 102. a control lever; 103. a first transmission gear; 104. a first drive motor; 105. a second transmission gear; 106. a telescopic supporting rod; 107. connecting the bottom plate; 108. a bulletin board; 109. connecting the top plate; 110. a rain shield; 111. installing a chute; 112. a guide chute; 113. a second drive motor; 114. a sliding plate; 115. cleaning the brush; 116. a fixed mount; 117. a limiting chute; 118. placing a rack; 119. a limiting slide block; 120. a support spring; 121. a placement groove; 122. an auxiliary handle; 123. a clamping plate; 124. an auxiliary lever; 125. a return spring; 126. controlling the screw; 127. a first drive bevel gear; 128. a second drive bevel gear; 129. an operating handle; 130. an auxiliary screw.

Detailed Description

In order to make the purpose, solution and advantages of the technical solution of the present invention clearer, the drawings of the specific embodiments of the present invention will be combined hereinafter to clearly and completely describe the technical solution of the embodiments of the present invention. Unless otherwise indicated, terms used herein have the ordinary meaning in the art. Like reference symbols in the various drawings indicate like elements.

Example (b): please refer to fig. 1 to fig. 6:

the utility model provides a sign information bulletin board, include: a fixed seat 1;

an auxiliary groove 101 is formed in the fixed seat 1; a control rod 102 is rotatably connected to the top end surface of the fixed seat 1; a telescopic supporting rod 106 is connected in the top end face of the control rod 102 in a sliding manner; the top end face of the telescopic supporting rod 106 is fixedly connected with a connecting bottom plate 107; a display plate 108 is fixedly connected to the rear part of the top end face of the connecting bottom plate 107; a connecting top plate 109 is fixedly connected to the top end face of the public display plate 108; the connecting top plate 109 is aligned with the connecting bottom plate 107; the top end face of the connecting top plate 109 is fixedly connected with a rain shield 110; a mounting chute 111 is arranged in the center of the front part of the top end face of the connecting bottom plate 107; a guide sliding groove 112 is formed in the middle of the front part of the bottom end face of the connecting top plate 109; the guide runner 112 is aligned with the position of the mounting runner 111.

Furthermore, according to the embodiment of the present invention, as shown in fig. 1 and 3, a first transmission gear 103 is fixedly connected to a lower portion of an outer wall of the control lever 102; a first driving motor 104 is fixedly connected with the right bolt of the bottom end surface of the auxiliary groove 101; the top end face of the first driving motor 104 is coaxially connected with a second transmission gear 105; second drive gear 105 meshes with first drive gear 103 to through starting first driving motor 104, make first driving motor 104 drive second drive gear 105 and rotate, drive first drive gear 103 through second drive gear 105's rotation and rotate, and then drive control lever 102 through first drive gear 103 and rotate, make things convenient for the staff to carry out the rotation show of multi-angle to the tender information, increase the public effect of tender information.

In addition, according to the embodiment of the present invention, as shown in fig. 2 and 4, a control screw 126 is rotatably connected in the control rod 102; the telescopic support rod 106 is in threaded connection with the outer wall of the control screw 126; a first transmission bevel gear 127 is fixedly connected to the bottom end surface of the control screw 126; a first transmission bevel gear 127 is rotatably connected in the lower portion of the control rod 102; a second transmission bevel gear 128 is rotatably connected to the lower right part of the control rod 102; the second transmission bevel gear 128 meshes with the first transmission bevel gear 127; second drive bevel gear 128's right-hand member face coaxial coupling has an operating handle 129, thereby drive second drive bevel gear 128 through rotating operating handle 129 and rotate, it rotates and drives control screw 126 to drive first drive bevel gear 127 through second drive bevel gear 128's rotation, and then the rotation through control screw 126 drives flexible bracing piece 106 and slides in the control lever 102 and adjust public display panel 108's height, be convenient for different heights crowd looks over, make things convenient for the staff to adjust public display panel 108's height, satisfy public display panel 108 demand in the use, improve public display fence's practicality.

In addition, according to the embodiment of the present invention, as shown in fig. 6, six fixing frames 116 are fixedly connected to the front end surface of the bulletin board 108 in a rectangular array; the inner walls of the six fixing frames 116 are provided with a group of limiting sliding chutes 117; the front end surfaces of the six fixing frames 116 are fixedly connected with a transparent plastic plate; a placing rack 118 is connected in the six fixing racks 116 in a sliding manner; the left end surfaces of the six placing racks 118 and the right end surfaces of the six placing racks 118 are fixedly connected with a group of limiting sliding blocks 119; the six groups of limiting slide blocks 119 are respectively connected in the six groups of limiting slide grooves 117 in a sliding manner; the top end surfaces of the six groups of limiting sliding blocks 119 are fixedly connected with a group of supporting springs 120; the tail ends of the six groups of supporting springs 120 are fixedly connected to the top end surfaces of the six groups of limiting chutes 117; six rack 118's the equal fixedly connected with in top end face rear portion supplementary handle 122, thereby make rack 118 slide in mount 116 through pulling supplementary handle 122, can make spacing slider 119 slide and extrude supporting spring 120 in spacing spout 117 at the gliding in-process of rack 118, the staff places the bid information in rack 118 after pulling out rack 118, then loosen supplementary handle 122, spacing slider 119 can reset and drive rack 118 to reset and accomodate into mount 116 with the bid information along with supporting spring 120's resilience this moment, transparent plastic plate side through mount 116 front end face can observe the bid information, easy operation is swift, do not need the staff to paint glue at the back of the bid information and paste the bid information, reduce staff's intensity of labour, improve staff's work efficiency, the bid information of having also avoided using glue simultaneously is changing to be puted up easily and is deposited the remaining condition.

In addition, according to the embodiment of the present invention, as shown in fig. 6, a placing groove 121 is formed in each of the top end surfaces of the six placing frames 118; a group of clamping plates 123 are symmetrically connected in the six placing grooves 121 in a sliding manner; the front end surfaces of the six groups of clamping plates 123 are fixedly connected with a group of auxiliary rods 124 in the middle; the six groups of auxiliary rods 124 are all cylindrical rod-shaped structures with auxiliary balls arranged on the front end faces; six groups of auxiliary rods 124 are respectively connected in the front end faces of the six placing racks 118 in a sliding manner; a group of return springs 125 are symmetrically and fixedly connected in the front end faces of the six placing frames 118; the tail ends of the six groups of return springs 125 are respectively fixedly connected to the front end surfaces of the six groups of auxiliary rods 124, so that when the placing rack 118 is retracted into the fixing rack 116, the inner wall of the fixing rack 116 presses the auxiliary rods 124 to make the auxiliary rods 124 slide in the placing rack 118 and press the return springs 125; the sliding of auxiliary rod 124 drives clamping plate 123 to slide in standing groove 121 and carries out spacing fixed to the bidding information of placing in standing groove 121, prevents that the folding phenomenon of in-process fold of bidding information at the public from influencing the observation of the personnel of bidding to the bidding information.

In addition, according to the embodiment of the present invention, as shown in fig. 5, a second driving motor 113 is tightly connected to the front bolt of the left end face of the connecting bottom plate 107; an auxiliary screw 130 is coaxially connected to the right end surface of the second driving motor 113; the auxiliary screw 130 is rotatably connected in the mounting chute 111; a sliding plate 114 is slidably connected in the mounting chute 111; the upper part of the sliding plate 114 is slidably connected in the guide chute 112; the lower portion of the sliding plate 114 is screw-coupled to the outer wall of the auxiliary screw 130; the rear end face of the sliding plate 114 is fixedly connected with a cleaning brush 115, thereby the second driving motor 113 is driven to drive the auxiliary screw 130 to rotate by starting the second driving motor 113, the sliding plate 114 is driven to slide in the installation chute 111 by the rotation of the auxiliary screw 130, meanwhile, the upper part of the sliding plate 114 can slide in the guide chute 112 to provide guidance for the sliding plate 114, the cleaning brush 115 on the rear end face of the sliding plate 114 is used for cleaning a transparent plastic plate posted on the fixing frame 116 by the sliding of the sliding plate 114, and the dust is prevented from being accumulated on the transparent plastic plate to influence the watching of the bidding personnel on the bidding information.

The specific use mode and function of the embodiment are as follows:

in the using process of the utility model, the second transmission bevel gear 128 is driven to rotate by rotating the operating handle 129, the first transmission bevel gear 127 is driven to rotate by rotating the second transmission bevel gear 128 to drive the control screw 126, and the telescopic support rod 106 is driven to slide in the control rod 102 by rotating the control screw 126 to adjust the height of the bulletin board 108, so that people with different heights can conveniently check the height of the bulletin board 108, the requirements of the bulletin board 108 in the using process are met, the practicability of the bulletin board is improved, the placing rack 118 slides in the fixing rack 116 by pulling the auxiliary handle 122, the limit slider 119 can slide in the limit chute 117 and extrude the support spring 120 in the sliding process of the placing rack 118, after the placing frame 118 is pulled out, a worker places the bidding information in the placing frame 118, then releases the auxiliary handle 122, at the moment, the limiting sliding block 119 can reset along with resilience of the supporting spring 120 and drives the placing frame 118 to reset so that the bidding information is stored in the fixing frame 116, the bidding information can be observed through the transparent plastic plate on the front end surface of the fixing frame 116, the operation is simple and rapid, the worker does not need to coat glue behind the bidding information to paste the bidding information, the labor intensity of the worker is reduced, the working efficiency of the worker is improved, meanwhile, the situation that the bidding information pasted by the glue is easy to remain when being replaced is avoided, when the placing frame 118 is retracted into the fixing frame 116, the inner wall of the fixing frame 116 can extrude the auxiliary rod 124 to enable the auxiliary rod 124 to slide in the placing frame 118 and extrude the reset spring 125; the slip through auxiliary rod 124 drives clamp plate 123 to slide in standing groove 121 and carries out spacing fixed to the tender information of placing in standing groove 121, prevent that the tender information from folding phenomenon of fold at the in-process of public notice from influencing the tender person and watching the tender information, through starting first driving motor 104, make first driving motor 104 drive second drive gear 105 and rotate, drive first drive gear 103 through the rotation of second drive gear 105 and rotate, and then drive control lever 102 through first drive gear 103 and rotate, make things convenient for the staff to carry out the rotation show of multi-angle to the tender information, increase the public effect of tender information, make second driving motor 113 drive auxiliary screw 130 and rotate through starting second driving motor 113, drive sliding plate 114 and slide in installation spout 111 through the rotation of auxiliary screw 130, simultaneously the upper portion of sliding plate 114 can slide in direction spout 112 and provide the direction for sliding plate 114, the slip makes the cleaning brush 115 of sliding plate 114 rear end face cause the transparent plastic slab on 116 to post through the transparent plastic slab that the tender information is prevented from piling up on transparent plastic slab, the influence on the transparent plastic slab that the tender person watches the tender information through the rain sign that drips and damage when the rain sign information.

Finally, it should be noted that the present invention is generally illustrated by one/a pair of components when describing the positions of the components and the matching relationship between the components, etc., however, it should be understood by those skilled in the art that such positions, matching relationship, etc. are also applicable to other components/other paired components.

The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention, which is defined by the appended claims.

Claims (6)

1. A kind of invitation information bulletin board, characterized by, comprising: a fixed seat (1); an auxiliary groove (101) is formed in the fixed seat (1); a control rod (102) is rotationally connected to the top end surface of the fixed seat (1); a telescopic supporting rod (106) is connected in the top end face of the control rod (102) in a sliding manner; the top end surface of the telescopic supporting rod (106) is fixedly connected with a connecting bottom plate (107); the rear part of the top end surface of the connecting bottom plate (107) is fixedly connected with a display plate (108); the top end face of the public board (108) is fixedly connected with a connecting top board (109); the connecting top plate (109) is aligned with the connecting bottom plate (107); the top end face of the connecting top plate (109) is fixedly connected with a rain shield (110); the front part of the top end face of the connecting bottom plate (107) is centrally provided with an installation chute (111); a guide sliding groove (112) is formed in the middle of the front part of the bottom end face of the connecting top plate (109); the guide chute (112) is aligned with the mounting chute (111).

2. A bid information bulletin board as defined in claim 1, wherein: the lower part of the outer wall of the control rod (102) is fixedly connected with a first transmission gear (103); a first driving motor (104) is tightly connected with the right bolt of the bottom end surface of the auxiliary groove (101); the top end face of the first driving motor (104) is coaxially connected with a second transmission gear (105); the second transmission gear (105) is meshed with the first transmission gear (103).

3. A bid information bulletin board as defined in claim 1, wherein: a control screw (126) is rotationally connected in the control rod (102); the telescopic support rod (106) is in threaded connection with the outer wall of the control screw rod (126); the bottom end surface of the control screw (126) is fixedly connected with a first transmission bevel gear (127); a first transmission bevel gear (127) is rotationally connected in the lower part of the control rod (102); a second transmission bevel gear (128) is rotationally connected to the lower right part of the control rod (102); the second transmission bevel gear (128) is meshed with the first transmission bevel gear (127); the right end face of the second transmission bevel gear (128) is coaxially connected with an operating handle (129).

4. A bid information bulletin board as defined in claim 1, wherein: the front end surface of the public board (108) is fixedly connected with six fixing frames (116) in a rectangular array shape; the inner walls of the six fixing frames (116) are provided with a group of limiting sliding chutes (117); the front end surfaces of the six fixing frames (116) are fixedly connected with a transparent plastic plate; a placing rack (118) is connected in the six fixing racks (116) in a sliding manner; the left end faces of the six placing racks (118) and the right end faces of the six placing racks (118) are fixedly connected with a group of limiting sliding blocks (119); the six groups of limiting slide blocks (119) are respectively connected in the six groups of limiting slide grooves (117) in a sliding manner; the top end surfaces of the six groups of limiting sliding blocks (119) are fixedly connected with a group of supporting springs (120); the tail ends of the six groups of supporting springs (120) are fixedly connected to the top end surfaces of the six groups of limiting chutes (117); the rear parts of the top end surfaces of the six placing frames (118) are fixedly connected with an auxiliary handle (122).

5. A bid information bulletin board as defined in claim 4, wherein: a placing groove (121) is formed in each of the top end surfaces of the six placing frames (118); a group of clamping plates (123) are symmetrically connected in the six placing grooves (121) in a sliding manner; the front end surfaces of the six groups of clamping plates (123) are fixedly connected with a group of auxiliary rods (124) in the middle; the six groups of auxiliary rods (124) are all cylindrical rod-shaped structures, the front end surfaces of which are provided with auxiliary balls; six groups of auxiliary rods (124) are respectively connected in the front end faces of the six placing racks (118) in a sliding manner; a group of reset springs (125) are symmetrically and fixedly connected in the front end faces of the six placing frames (118); the tail ends of the six groups of return springs (125) are respectively and fixedly connected to the front end surfaces of the six groups of auxiliary rods (124).

6. A bid information bulletin board as defined in claim 1, wherein: a second driving motor (113) is fixedly connected with the front part of the left end surface of the connecting bottom plate (107) through a bolt; the right end face of the second driving motor (113) is coaxially connected with an auxiliary screw rod (130); the auxiliary screw rod (130) is rotatably connected in the mounting chute (111); a sliding plate (114) is connected in the mounting chute (111) in a sliding way; the upper part of the sliding plate (114) is connected in the guide chute (112) in a sliding way; the lower part of the sliding plate (114) is in threaded connection with the outer wall of the auxiliary screw rod (130); the rear end face of the sliding plate (114) is fixedly connected with a cleaning brush (115).

Images