Outdoor culture propaganda display device

Abstract

The application provides an outdoor culture propaganda display device, and relates to the technical field of display stands, which comprises two supports, a display frame is fixedly installed on one side of each of the two supports close to each other, a culture poster is installed on the surface of the display frame, two universal wheels are rotatably installed on the lower surface of the support, a replacement device is arranged on the surface of the display frame, the replacement device comprises fixed pins and conical heads with temporary fixing structures, positioning blocks, rotating rods and supporting plates with rotating supporting effects, the four fixed pins are uniformly and fixedly installed on the four corners of the display frame, and the conical heads are fixedly installed on the ends of the fixed pins away from the display frame. The replacement device is arranged, the replacement work of the culture poster on the display frame is facilitated, wrinkles are less likely to appear on the surface of the culture poster fixed on the display frame in the traditional way, the font on the surface of the wrinkled culture poster is not inconvenient to watch, and the replacement efficiency of the culture poster by the user is improved to a certain extent.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display stands, in particular to an outdoor cultural propaganda display device. BACKGROUND

[0002] The display stand is a device for displaying posters, which is convenient for outdoor cultural product propaganda and has the characteristics of convenient movement, is usually spliced by some frames, and facilitates the fixed display of the display poster.

[0003] Chinese patent application CN106847140A discloses an agricultural product propaganda display device, which comprises an LED display screen, a support, a solar panel, an inverter, a storage battery and a processor. A clamping plate is arranged on the support, an alarm device is arranged at the connection between the clamping plate and the LED display screen, a loudspeaker is arranged on the frame, a USB socket is arranged at the bottom of the LED display screen, the solar panel is installed on the top of the LED display screen, the inverter is connected with the storage battery, the storage battery is electrically connected with the processor, the processor is connected with a text-to-speech module, a voice playing module, an alarm module and a storage module, and the input ends of the LED display screen, the loudspeaker, the alarm device and the USB socket are electrically connected with the output ends of the text-to-speech module, the voice playing module, the alarm module and the storage module. The agricultural product propaganda display device is convenient to disassemble, safe and environmentally friendly, and convenient to replace the type of propaganda display agricultural products.

[0004] However, the above patent and prior art still have the following defects:

[0005] When the cultural poster is replaced outdoors, the traditional fixing method is to use adhesive tape to fix it. The cultural poster fixed by adhesive tape cannot be closely attached to the surface of the display frame, so that wrinkles are easily formed on the surface of the fixed cultural poster, the font on the surface of the wrinkled cultural poster is not convenient to watch, thereby reducing the viewing effect of the displayed cultural poster content and the replacement efficiency of the cultural poster by the user. SUMMARY

[0006] The present application aims to solve the problem of poor viewing effect of the displayed cultural poster after replacement in the prior art, and provides an outdoor cultural propaganda display device.

[0007] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: an outdoor cultural propaganda display device, comprising two supports, two supports are fixedly installed with a display frame on one side close to each other, the surface of the display frame is installed with a cultural poster, the lower surface of the support is rotatably installed with two universal wheels, the surface of the display frame is provided with a replacement device, the replacement device comprises a fixing pin and a taper head with a temporary fixing structure, a positioning block, a rotating rod and a supporting plate with a rotating bracing effect.

[0008] The effect achieved by the above-mentioned components is that the replacement device facilitates the replacement of the cultural poster on the display frame, reduces the wrinkling of the surface of the traditional cultural poster fixed on the display frame, and makes it inconvenient to view the font on the wrinkled surface of the cultural poster, and to some extent, improves the replacement efficiency of the cultural poster for the user.

[0009] Preferably, the four fixing pins are uniformly fixed and installed at the four corners of the display frame, the conical head is fixed and installed at one end of the fixing pin away from the display frame, the inner cavity of the conical head away from the sharp end is of a circular table type structure, the side wall of the bracket is fixed and installed with eight positioning blocks in pairs, the rotating rod is rotatably installed inside the two positioning blocks, the support plate is fixed and installed on the side wall of the rotating rod, and the side of the support plate away from the rotating rod is of an arc surface structure.

[0010] The effect achieved by the above-mentioned components is that when the cultural poster needs to be replaced, the cultural poster is first passed through the surface of the conical head, the conical head facilitates the preliminary fixing of the cultural poster, the cultural poster is passed through the conical head and sleeved on the surface of the fixing pin, the rotating rod rotates inside the positioning block, the support plate rotates with the rotating rod, and the support plates arranged on both sides of the display frame rotate away from each other, thereby facilitating the tensioning of the cultural poster temporarily fixed on the surface of the fixing pin.

[0011] Preferably, the upper surface of the bracket is fixed and installed with two "L"-shaped guide rail frames, the surface of the guide rail frame is slidably connected with a rack, the upper end of the rotating rod is fixed and installed with a gear, the tooth surface of the gear is engaged with the tooth surface of the rack, the back surface of the display frame is fixed and installed with a fixing frame, the fixing frame is spliced by a frame and a rod, the inner wall of the fixing frame is fixed and installed with a hydraulic cylinder, the inner wall of the hydraulic cylinder is slidably installed with a hydraulic rod, one end of the hydraulic rod away from the hydraulic cylinder is fixed and installed with a driving strip, the driving strip is of an unclosed rectangular ring structure, the side wall of the rack is fixed and installed with a support strip, the support strip is obliquely fixed and installed at the back side of the rack, the two sides of the driving strip are rotatably installed with rollers, the lower surface of the rack is fixed and installed with a protrusion, and the side of the protrusion and the guide rail frame close to each other is fixed and installed with a first spring.

[0012] The effects achieved by the above components are that when the hydraulic cylinder is started, the hydraulic rod slides in the hydraulic cylinder, the driving bars are driven to move relative to the surfaces of the two supporting bars, thereby facilitating the simultaneous driving of the two racks, the two racks move towards each other, the setting of the rollers reduces the friction between the driving bars and the supporting bars, facilitating the driving of the racks, the racks drive the gears to rotate, the supporting plates rotate with the rotating rods, the supporting plates arranged on both sides of the display frame rotate away from each other, thereby facilitating the tightening of the cultural posters temporarily fixed on the surface of the fixing pin, when the old cultural posters need to be taken out of the display frame, the driving bars are reset, the racks are also reset under the action of the first spring, and the loosening of the fixed cultural posters is facilitated.

[0013] Preferably, the side wall of the fixing pin is slidably installed with a fitting block, an arc-shaped groove is formed in the side wall of the fitting block, the fitting block has a hollow circular truncated cone structure, a second spring is fixedly installed on the side of the fitting block and the display frame, and a rotating block is rotatably installed on the surface of the display frame and located above the fixing pin.

[0014] The effects achieved by the above components are that the cultural poster on the surface of the sliding fixing pin is slid onto the inner wall of the arc-shaped groove of the fitting block, the four corners of the cultural poster are respectively sleeved on the surfaces of the four fitting blocks, the rotating block is rotated to the position between the fitting block and the display frame, the fitting block is sleeved on the inner side of the tapered head and forms a tightly fitted structure with the tapered rod, the cultural poster on the fitting block is quickly slid out, the rotating block between the fitting block and the display frame is rotated out, and the fitting block is quickly reset under the action of the second spring, thereby facilitating the normal replacement of the new cultural poster.

[0015] Preferably, the surface of the supporting plate is provided with a limiting device, the limiting device comprises a plurality of fixed plates arranged in pairs, two fixed plates are fixedly installed on both sides of the supporting plate, a circular pin is slidably arranged in the interior of each fixed plate, a pull plate is fixedly installed on the end face of each circular pin, a para-aramid fiber is fixedly installed on the side of each pull plate close to the other, a driving rod is threadedly arranged in the interior of each fixed plate, and the driving rod and the inner wall of the pull plate are rotatably connected.

[0016] The effects achieved by the above components are that the display poster is sleeved between the supporting plate and the aramid yarn, the driving rod is rotated to drive the pulling block to move, thereby facilitating the pulling of the aramid yarn, the circular pin is arranged to slide in the fixed plate, thereby limiting the moving direction of the aramid yarn end side, reducing the driving rotation of the aramid yarn, improving the stability of the aramid yarn during movement, driving the aramid yarn to be attached to the cultural poster, stopping driving the aramid yarn, and limiting the cultural poster on the supporting plate at this time, thereby further improving the flatness of the cultural poster during pulling.

[0017] Preferably, a sliding strip is arranged to slide in the fixed plate, and a "C"-shaped clasp is fixedly arranged on the end surface of the sliding strip.

[0018] The effects achieved by the above components are that the "C"-shaped clasp is attached to the surface of the aramid yarn, thereby facilitating the support of the aramid yarn.

[0019] Preferably, a circular block is fixedly arranged on the end of the sliding strip away from the clasp, a third spring is sleeved on the surface of the sliding strip, and the two ends of the third spring are fixedly connected with the circular block and the fixed plate.

[0020] The effects achieved by the above components are that the sliding strip is always driven by the third spring between the circular block and the fixed plate to attach the "C"-shaped clasp to the surface of the aramid yarn.

[0021] Preferably, a stabilizing device is arranged on the surface of the support, the stabilizing device comprises a support plate, the support plate is fixedly arranged on the side wall of the support, a taper rod is slidably connected with the inner wall of the support plate, a bolt is threadedly arranged in the inner part of the support plate, a rotating shaft is rotatably arranged in the inner part of the taper rod, three reserved grooves are uniformly arranged in the side wall of the taper rod, and three fan plates are uniformly fixedly arranged on the side wall of the rotating shaft and located on the inner wall of the reserved grooves.

[0022] The effects achieved by the above components are that after the taper rod is inserted into the ground, the rotating shaft is rotated to drive the fan plates to be turned out from the inner wall of the reserved grooves and horizontally inserted into the muddy ground, thereby reducing the sliding out of the taper rod from the ground, improving the stability of the taper rod fixed on the ground, and further improving the stability of the display device fixed in the muddy ground.

[0023] Preferably, a latch is slidably arranged on the upper end of the rotating shaft, the latch is in a "U"-shaped structure, a connecting block is fixedly arranged on the side wall of the latch, a return spring is fixedly arranged on the side of the connecting block and the rotating shaft close to each other, two positioning holes are arranged on the upper end of the taper rod, and the size of the positioning holes on the taper rod is matched with the size of the latch.

[0024] The effect achieved by the above components is that the insertion rod is inserted into the positioning hole by the spring force of the reset spring between the connecting block and the rotating shaft, which realizes the temporary fixing of the rotating shaft after the drive is turned, reduces the rotation between the fan plate and the cone rod, and improves the stability of the fan plate during use or retraction.

[0025] Preferably, a support rod is fixedly installed at the upper end of the tapered rod, and three anti-slip plates are evenly and obliquely fixedly installed on the upper side of the support rod, with anti-slip texture provided on the upper surface of the anti-slip plates.

[0026] The effect achieved by the above components is as follows: the anti-slip plate with three inclined surfaces reduces the slippage between the foot and the cone when pressing the cone, thus improving the stability during the pressing process.

[0027] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0028] 1. In this invention, by setting up a replacement device, the replacement of cultural posters on the display frame is facilitated, reducing the problem that the surface of cultural posters that are traditionally fixed on the display frame is prone to wrinkling, and the text on the surface of wrinkled cultural posters is inconvenient to read. To a certain extent, this improves the efficiency of users in replacing cultural posters. Attached Figure Description

[0029] Figure 1 This invention provides a three-dimensional structural diagram of an outdoor cultural promotion and display device;

[0030] Figure 2 This invention provides a partial structural schematic diagram of an outdoor cultural promotion and display device;

[0031] Figure 3 This invention proposes an outdoor cultural promotion and display device. Figure 2 A partial structural diagram;

[0032] Figure 4 This invention provides a partial structural diagram of a replacement device in an outdoor cultural promotion and display device;

[0033] Figure 5 This invention proposes an outdoor cultural promotion and display device. Figure 3 Enlarged view of point A;

[0034] Figure 6 This invention proposes an outdoor cultural promotion and display device. Figure 4 Enlarged view of point B;

[0035] Figure 7 This invention proposes an outdoor cultural promotion and display device. Figure 4 Enlarged view of point C;

[0036] Figure 8 This invention provides a structural schematic diagram of a stabilizing device in an outdoor cultural promotion and display device;

[0037] Figure 9 This invention provides a cross-sectional structural diagram of a cone rod in an outdoor cultural promotion and display device;

[0038] Figure 10 This invention proposes an outdoor cultural promotion and display device. Figure 9 A partial structural diagram.

[0039] Legend: 1. Bracket; 2. Display frame; 3. Casters; 4. Cultural poster; 5. Replacement device; 501. Drive bar; 502. Rack; 503. Support plate; 504. Rotating rod; 505. Positioning block; 506. Gear; 507. Support bar; 508. Fixing frame; 509. Hydraulic cylinder; 510. Hydraulic rod; 511. Guide rail frame; 512. First spring; 513. Rotating block; 514. Adhesive block; 515. Fixing pin; 516. Cone; 517. Second spring; 51 8. Roller; 6. Limiting device; 61. Aramid yarn; 62. Fixing plate; 63. Drive rod; 64. Pull plate; 65. Snap ring; 66. Circular block; 67. Third spring; 68. Sliding bar; 69. Circular pin; 7. Stabilizing device; 701. Tapered rod; 702. Fan plate; 703. Rotating shaft; 704. Support rod; 705. Anti-slip plate; 706. Reserved slot; 707. Pin; 708. Connecting block; 709. Return spring; 710. Positioning hole; 711. Support plate; 712. Bolt. Detailed Implementation

[0040] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0041] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways than those described herein, and therefore the invention is not limited to the specific embodiments disclosed in the following specification.

[0042] Example 1, such as Figures 1-10 As shown, the present invention provides an outdoor cultural promotion and display device, including two supports 1. A display frame 2 is fixedly installed on one side of the two supports 1 that is close to each other. A cultural poster 4 is installed on the surface of the display frame 2. Two universal wheels 3 are rotatably installed on the lower surface of the supports 1. A replacement device 5 is provided on the surface of the display frame 2. A limiting device 6 is provided on the surface of the support plate 503. A stabilizing device 7 is provided on the surface of the supports 1.

[0043] The specific settings and functions of the replacement device 5, the limiting device 6 and the stabilizing device 7 will be described in detail below.

[0044] As shown in Figure 1 - Figure 6 The replacement device 5 includes fixing pins 515 with temporary fixing structures and conical heads 516, positioning blocks 505 with rotating tightening functions, rotating rods 504 and support plates 503. By arranging the replacement device 5, the replacement of the cultural posters 4 on the display frame 2 is facilitated, the wrinkles on the surface of the cultural posters 4 fixed on the display frame 2 in the traditional way are reduced, the font on the surface of the cultural posters 4 after wrinkling is not convenient to watch, and the efficiency of the users in replacing the cultural posters 4 is improved to a certain extent.

[0045] The four fixing pins 515 are evenly fixed and installed at the four corners of the display frame 2, the conical head 516 is fixed and installed at the end of the fixing pin 515 away from the display frame 2, the end of the conical head 516 away from the tip is provided with an inner cavity with a circular table type structure, the side wall of the support 1 is fixed and installed with eight positioning blocks 505 in two groups, the rotating rod 504 is rotatably installed in the inner part of the two positioning blocks 505, the support plate 503 is fixed and installed on the side wall of the rotating rod 504, and the side of the support plate 503 away from the rotating rod 504 is an arc surface structure. When the cultural poster 4 needs to be replaced, the cultural poster 4 is first passed through the surface of the conical head 516, the arrangement of the conical head 516 facilitates the preliminary fixing of the cultural poster 4, the cultural poster 4 is sleeved on the surface of the fixing pin 515 through the conical head 516, the rotating rod 504 is rotated in the inner part of the positioning block 505, the support plate 503 is rotated with the rotating rod 504, and the support plates 503 arranged at both sides of the display frame 2 are rotated away from each other, thereby facilitating the tightening of the cultural poster 4 temporarily fixed on the surface of the fixing pin 515.

[0046] The upper surface of the support 1 is fixedly installed with two "L"-shaped guide rail frames 511, the surface of the guide rail frame 511 is slidably connected with a rack 502, the upper end of a rotating rod 504 is fixedly installed with a gear 506, the tooth surface of the gear 506 is engaged with the tooth surface of the rack 502, the back surface of the display frame 2 is fixedly installed with a fixed frame 508, the fixed frame 508 is spliced by a frame and a rod, the inner wall of the fixed frame 508 is fixedly installed with a hydraulic cylinder 509, the inner wall of the hydraulic cylinder 509 is slidably installed with a hydraulic rod 510, the end of the hydraulic rod 510 away from the hydraulic cylinder 509 is fixedly installed with a driving strip 501, the driving strip 501 is in the form of an un-closed rectangular ring structure, the side wall of the rack 502 is fixedly installed with a support strip 507, the support strip 507 is obliquely fixedly installed on the back side of the rack 502, both sides of the driving strip 501 are rotatably installed with a roller 518, the lower surface of the rack 502 is fixedly installed with a protrusion, the protrusion and the side of the guide rail frame 511 close to each other are fixedly installed with a first spring 512. The hydraulic cylinder 509 is started, the hydraulic rod 510 will slide in the hydraulic cylinder 509, at this time, the driving of the driving strip 501 can be realized, the driving strip 501 will relatively move with the surface of the two support strips 507, thereby facilitating the simultaneous driving of the two racks 502, the two racks 502 will move to the side close to each other, the setting of the roller 518 reduces the friction between the driving strip 501 and the support strip 507, thereby facilitating the driving of the rack 502, the rack 502 will drive the gear 506 to rotate, at this time, the rotating rod 504 will rotate in the positioning block 505, the supporting plate 503 will rotate with the rotating rod 504, the supporting plates 503 arranged on both sides of the display frame 2 will rotate away from each other, thereby facilitating the tensioning work of the cultural poster 4 temporarily fixed on the surface of the fixed pin 515, when it is needed to take out the old discarded cultural poster 4 from the display frame 2, the driving strip 501 is reset first, at this time, the rack 502 will also be driven to reset under the action of the first spring 512, thereby facilitating the loosening work of the fixed cultural poster 4.

[0047] The side wall of the fixed pin 515 is slidably installed with the abutting block 514, the side wall of the abutting block 514 is provided with an arc-shaped groove, the abutting block 514 is in a hollow circular truncated cone structure, the side of the abutting block 514 and the display frame 2 close to each other is fixedly installed with the second spring 517, the surface of the display frame 2 is rotatably installed with the rotating block 513, and the rotating block 513 is located on the upper side of the fixed pin 515. The cultural poster 4 slides on the surface of the fixed pin 515, the inner wall of the arc-shaped groove of the abutting block 514, the four corners of the cultural poster 4 are respectively sleeved on the surfaces of the four abutting blocks 514, the rotating block 513 is rotated to the position between the abutting block 514 and the display frame 2, the abutting block 514 is sleeved on the inner side of the taper head 516 and forms a close-fitting structure with the taper rod 701, the cultural poster 4 on the abutting block 514 is quickly slid out, the rotating block 513 located between the abutting block 514 and the display frame 2 is rotated out, the abutting block 514 is quickly reset under the action of the second spring 517, and therefore the normal replacement work of the new cultural poster 4 is facilitated.

[0048] As Figure 1 and Figure 4 and Figure 7 As shown in the drawings, the limiting device 6 comprises a plurality of fixed plates 62 arranged in pairs, two fixed plates 62 are fixedly installed on the two sides of the supporting plate 503, a circular pin 69 is slidably arranged in the interiors of the two fixed plates 62, a pull plate 64 is fixedly installed on the end face of each of the two circular pins 69, a aramid fiber 61 is fixedly installed on the side close to each other of the two pull plates 64, a driving rod 63 is threadedly arranged in the interior of the fixed plate 62, and the driving rod 63 is rotatably connected with the inner wall of the pull plate 64. The display poster is sleeved at the position between the supporting plate 503 and the aramid fiber 61, the driving rod 63 is rotated, the driving rod 63 drives the pull block to move, the pulling work of the aramid fiber 61 is facilitated, the circular pin 69 is arranged to slide in the interior of the fixed plate 62, the movement direction of the end side of the aramid fiber 61 is limited, the driving rotation of the aramid fiber 61 is reduced, and the stability of the aramid fiber 61 during movement is improved. The aramid fiber 61 is driven to abut against the cultural poster 4, the driving of the aramid fiber 61 is stopped, the limiting work of the cultural poster 4 on the supporting plate 503 is realized at this time, and the flatness of the cultural poster 4 during pulling is further improved.

[0049] The inner part of the fixed plate 62 is slidably provided with a sliding strip 68, and the end face of the sliding strip 68 is fixedly provided with a "C"-shaped clasp 65. The "C"-shaped clasp 65 is tightly attached to the surface of the aramid fiber 61, which facilitates the supporting work of the aramid fiber 61. The end of the sliding strip 68 away from the clasp 65 is fixedly provided with a circular block 66, and the surface of the sliding strip 68 is sleeved with a third spring 67, and the two ends of the third spring 67 are fixedly connected with the circular block 66 and the fixed plate 62 respectively. The sliding strip 68 will always be driven by the elastic force of the third spring 67 between the circular block 66 and the fixed plate 62 to make the "C"-shaped clasp 65 tightly attached to the surface of the aramid fiber 61.

[0050] As shown in Figure 1 , Figure 8 and Figure 9 and Figure 10 , the stabilizing device 7 comprises a support plate 711 fixedly installed on the side wall of the support 1, the inner wall of the support plate 711 is slidably connected with a taper rod 701, the inner part of the support plate 711 is threadedly provided with a bolt 712, the inner part of the taper rod 701 is rotatably provided with a rotating shaft 703, the side wall of the taper rod 701 is uniformly provided with three reserved grooves 706, and the side wall of the rotating shaft 703 is uniformly fixedly provided with three fan plates 702, and the fan plates 702 are located on the inner wall of the reserved grooves 706. After the taper rod 701 is inserted into the ground, the rotating shaft 703 is rotated to drive the fan plates 702 to rotate out of the inner wall of the reserved grooves 706 and horizontally insert into the muddy ground, thereby reducing the sliding out of the taper rod 701 from the ground, improving the stability of the taper rod 701 fixed on the ground, and further improving the stability of the display device fixed in the muddy ground.

[0051] The upper end of the rotating shaft 703 is slidably provided with a latch 707 in a "U"-shaped structure, the side wall of the latch 707 is fixedly provided with a connecting block 708, the connecting block 708 and the rotating shaft 703 are fixedly provided with a return spring 709 on the side close to each other, the upper end of the taper rod 701 is provided with two positioning holes 710, and the size of the positioning holes 710 on the taper rod 701 is matched with the size of the latch 707. The plug rod will be inserted into the positioning hole 710 under the elastic force of the return spring 709 between the connecting block 708 and the rotating shaft 703, thereby achieving the temporary fixing of the rotating shaft 703 after driving, reducing the rotation between the fan plates 702 and the taper rod 701, and improving the stability of the fan plates 702 in use or retraction. The upper end of the taper rod 701 is fixedly provided with a supporting rod 704, the upper side of the supporting rod 704 is uniformly and obliquely fixedly provided with three anti-skid plates 705, and the upper surface of the anti-skid plates 705 is provided with anti-skid lines. The three inclined anti-skid plates 705 reduce the sliding between the feet and the taper rod 701 when stepping on the taper rod 701, thereby improving the stability during the stepping process of the taper rod 701.

[0052] The whole working principle is: when the cultural poster 4 needs to be replaced, first pass the cultural poster 4 through the surface of the cone head 516, the setting of the cone head 516 facilitates the preliminary fixing work of the cultural poster 4, the cultural poster 4 will pass through the cone head 516 and be sleeved on the surface of the fixed pin 515, at this time, the hydraulic cylinder 509 is started, the hydraulic rod 510 will slide in the hydraulic cylinder 509, at this time, the driving bar 501 can be driven, the driving bar 501 will move relative to the surface of the two supporting bars 507, thereby facilitating the simultaneous driving work of the two racks 502, the two racks 502 will move to the side away from each other, the setting of the roller 518 reduces the friction between the driving bar 501 and the supporting bar 507, facilitating the driving work of the rack 502, the rack 502 drives the gear 506 to rotate, at this time, the rotating rod 504 will rotate in the positioning block 505, the supporting plate 503 will rotate with the rotating rod 504, the supporting plates 503 arranged on both sides of the display frame 2 will rotate away from each other, thereby facilitating the tensioning work of the cultural poster 4 temporarily fixed on the surface of the fixed pin 515, after the poster is tensioned, the hydraulic cylinder 509 can be stopped, at this time, the cultural poster can be fixed and tensioned, reducing the situation that the cultural poster 4 surface appears wrinkles affecting the viewing effect, thereby improving the replacement efficiency of the cultural poster 4, when the old cultural poster 4 needs to be taken out from the display frame 2, first reset the driving bar 501, at this time, the rack 502 will also be driven by the first spring 512 to reset the rack 502, facilitating the loosening work of the fixed cultural poster 4, at this time, the cultural poster 4 on the surface of the sliding fixed pin 515 is slid, the cultural poster 4 is slid on the inner wall of the arc-shaped groove of the fitting block 514, after the four corners of the cultural poster 4 are sleeved on the surface of the four fitting blocks 514, the rotating block 513 is rotated to the position between the fitting block 514 and the display frame 2, the fitting block 514 is sleeved on the inner side of the cone head 516 and forms a close fitting structure with the cone rod 701, facilitating the quick sliding out work of the cultural poster 4 on the fitting block 514, the rotating block 513 between the fitting block 514 and the display frame 2 is rotated out, the fitting block 514 will be quickly reset by the second spring 517, thereby facilitating the normal replacement work of the new cultural poster 4, by setting the replacement device 5, the replacement work of the cultural poster 4 on the display frame 2 is facilitated, reducing the situation that the cultural poster 4 fixed on the display frame 2 surface is prone to wrinkles, the font on the surface of the wrinkled cultural poster 4 is not convenient to watch, to some extent, the replacement efficiency of the user for the cultural poster 4 is improved.

[0053] The display poster is sleeved between the supporting plate 503 and the aramid yarn 61, the driving rod 63 is rotated, the driving rod 63 drives the pulling block to move, the pulling of the aramid yarn 61 is facilitated, the circular pin 69 is arranged to slide in the fixed plate 62, the movement direction of the aramid yarn 61 is limited, the rotation of the aramid yarn 61 is reduced, and the stability of the aramid yarn 61 during movement is improved. The aramid yarn 61 is driven to be attached to the cultural poster 4, the driving of the aramid yarn 61 is stopped, the cultural poster 4 on the supporting plate 503 can be limited at this time, the flatness of the cultural poster 4 during pulling is further improved, the driving rod 63 is rotated in the opposite direction, the slide bar 68 is always subjected to the elastic force of the third spring 67 between the circular block 66 and the fixed plate 62, the C-shaped structure clasp ring 65 is attached to the surface of the aramid yarn 61, the support of the aramid yarn 61 is facilitated, a space is formed between the aramid yarn 61 and the supporting plate 503, the cultural poster 4 between the supporting plate 503 and the aramid yarn 61 is sleeved, the aramid yarn 61 is prevented from being bent during use, the normal placement of the cultural poster 4 is affected, the limiting device 6 is arranged, the limiting of the cultural poster 4 is facilitated, and the flatness of the cultural poster 4 during replacement is further improved.

[0054] When the display device needs to be placed on the outdoor muddy ground, the anti-skid plate 705 is stepped on, the three inclined surface structures of the anti-skid plate 705 reduce the sliding between the feet and the cone rod 701 when the cone rod 701 is stepped on, and the stability during stepping on the cone rod 701 is improved. After the cone rod 701 is inserted into the ground, the shaft 703 is rotated, the fan plate 702 is turned out from the inner wall of the reserved slot 706 and inserted horizontally into the muddy ground, thereby reducing the sliding of the cone rod 701 out of the ground and improving the stability of the cone rod 701 fixed on the ground. When the pin 707 is rotated to a position corresponding to the positioning hole 710, the rod is inserted into the positioning hole 710 under the elastic force of the return spring 709 between the connecting block 708 and the shaft 703, the temporary fixing of the shaft 703 after rotation is realized, the rotation between the fan plate 702 and the cone rod 701 is reduced, and the stability of the fan plate 702 during use or retraction is improved. When the display device is used outdoors and needs to be retracted, the pin 707 is inserted into the inner wall of another positioning hole 710, the retraction of the fan plate 702 can be realized. After the cone rod 701 is lifted to a certain height, the bolt 712 is rotated and pressed against the side wall of the cone rod 701, the fixing of the lifted cone rod 701 can be realized. The stable device 7 is arranged, the fixing between the support 1 and the muddy ground is facilitated, and the stability of the display device used outdoors is improved.

[0055] The above merely describes preferred embodiments of the present application, but is not intended to limit the present application to other forms, any person skilled in the art can make changes or modifications to the above disclosed technical contents into equivalent embodiments with equivalent changes, and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application without departing from the technical solution content of the present application still belongs to the protection scope of the present application technical solution.

Claims

1. An outdoor cultural promotion and display device, comprising two supports (1), characterized in that: A display frame (2) is fixedly installed on one side of the two supports (1) that are close to each other. A cultural poster (4) is installed on the surface of the display frame (2). Two casters (3) are rotatably installed on the lower surface of the support (1). A replacement device (5) is provided on the surface of the display frame (2). The replacement device (5) includes a fixing pin (515) and a cone (516) with a temporary fixing structure, a positioning block (505) with a rotational bracing function, a rotating rod (504), and a support plate (503). Four fixing pins (515) are evenly fixedly installed at the four corners of the display frame (2). The cone (516) is fixedly installed at the end of the fixing pin (515) away from the display frame (2). The cone (516) has a frustum-shaped cavity at the end away from the tip. Eight positioning blocks (505) are fixedly installed in pairs on the side wall of the bracket (1). The rotating rod (504) is rotatably installed inside the two positioning blocks (505). The support plate (503) is fixedly installed on the side wall of the rotating rod (504). The side of the support plate (503) away from the rotating rod (504) is an arc surface structure. Two L-shaped guide rails (511) are fixedly installed on the upper surface of the bracket (1). A rack (502) is slidably connected to the surface of the guide rails (511). A gear (506) is fixedly installed at the upper end of the rotating rod (504). The tooth surface of the gear (506) meshes with the tooth surface of the rack (502). A fixing frame (508) is fixedly installed on the back of the display frame (2). The fixing frame (508) is composed of a frame and a rod. A hydraulic cylinder (509) is fixedly installed on the inner wall of the fixing frame (508). The inner wall of the hydraulic cylinder (509) is slidably connected to the rack. A hydraulic rod (510) is provided, and a drive bar (501) is fixedly installed at the end of the hydraulic rod (510) away from the hydraulic cylinder (509). The drive bar (501) has an open rectangular ring structure. A support bar (507) is fixedly installed on the side wall of the rack (502). The support bar (507) is obliquely fixedly installed on the back side of the rack (502). Rollers (518) are rotatably installed on both sides of the drive bar (501). A protrusion is fixedly installed on the lower surface of the rack (502). A first spring (512) is fixedly installed on the side of the protrusion and the guide rail frame (511) that are close to each other. A fitting block (514) is slidably installed on the side wall of the fixing pin (515). The side wall of the fitting block (514) is provided with an arc groove. The fitting block (514) has a hollow frustum structure. A second spring (517) is fixedly installed on the side of the fitting block (514) and the display frame (2) that are close to each other. A rotating block (513) is rotatably installed on the surface of the display frame (2). The rotating block (513) is located on the upper side of the fixing pin (515).

2. The outdoor cultural promotion and display device according to claim 1, characterized in that: The surface of the support plate (503) is provided with a limiting device (6). The limiting device (6) includes several fixed plates (62) in pairs. The two fixed plates (62) are respectively fixedly installed on both sides of the support plate (503). A circular pin (69) is slidably inserted inside the two fixed plates (62). A pull plate (64) is fixedly installed on the end face of the two circular pins (69). Aramid yarn (61) is fixedly installed on the side of the two pull plates (64) that are close to each other. A drive rod (63) is threaded through the inside of the fixed plate (62). The drive rod (63) and the inner wall of the pull plate (64) are rotatably connected.

3. The outdoor cultural promotion and display device according to claim 2, characterized in that: The fixed plate (62) is slidably provided with a slide bar (68), and a retaining ring (65) with a "C" shaped structure is fixedly installed on the end face of the slide bar (68).

4. An outdoor cultural promotion and display device according to claim 3, characterized in that: A circular block (66) is fixedly installed at the end of the slide bar (68) away from the retaining ring (65). A third spring (67) is sleeved on the surface of the slide bar (68). The two ends of the third spring (67) are fixedly connected to the circular block (66) and the fixing plate (62) respectively.

5. The outdoor cultural promotion and display device according to claim 1, characterized in that: The surface of the bracket (1) is provided with a stabilizing device (7). The stabilizing device (7) includes a support plate (711). The support plate (711) is fixedly installed on the side wall of the bracket (1). A tapered rod (701) is slidably connected to the inner wall of the support plate (711). A bolt (712) is threaded through the inner thread of the support plate (711). A rotating shaft (703) is rotatably installed inside the tapered rod (701). Three reserved grooves (706) are evenly opened on the side wall of the tapered rod (701). Three fan plates (702) are evenly fixedly installed on the side wall of the rotating shaft (703). The fan plates (702) are located on the inner wall of the reserved grooves (706).

6. The outdoor cultural promotion and display device according to claim 5, characterized in that: A pin (707) is slidably inserted through the upper end of the rotating shaft (703). The pin (707) has a "U" shaped structure. A connecting block (708) is fixedly installed on the side wall of the pin (707). A return spring (709) is fixedly installed on the side of the connecting block (708) and the rotating shaft (703) that are close to each other. Two positioning holes (710) are opened at the upper end of the tapered rod (701). The size of the positioning holes (710) on the tapered rod (701) is adapted to the size of the pin (707).

7. The outdoor cultural promotion and display device according to claim 5, characterized in that: A support rod (704) is fixedly installed at the upper end of the cone rod (701), and three anti-slip plates (705) are evenly and obliquely fixedly installed on the upper side of the support rod (704). The upper surface of the anti-slip plates (705) is provided with anti-slip texture.

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