Closed gallery for conveying concrete sand-gravel materials in large mixing plant

Abstract

The invention discloses a large mixing plant concrete gravel material conveying closed gallery, and belongs to the technical field of closed galleries, the large mixing plant concrete gravel material conveying closed gallery comprises a supporting frame body fixedly installed above the ground, a lower support is fixedly installed at the upper end of the supporting frame body, and a riffled plate is fixedly installed on the upper surface of the lower support; the pedestrian walkway is fixedly arranged on the checkered steel plate and is used for walking and overhauling of workers; and the expansion joint mechanism is installed between the two adjacent trestle sections, it is ensured that the trestle sections can conduct stable thermal shrinkage, and the expansion joint mechanism comprises two fixing frames fixedly installed on the outer sides of the two trestle sections correspondingly. The large mixing plant concrete sand-gravel material conveying closed gallery can stably support and protect a sealing-tape machine, the safety in the conveying process can be improved through the closed structure, and the stress change caused by the temperature change of a trestle can be reduced through the positioning and fixing support and the expansion joint mechanism; and the structural stability of the trestle is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of closed corridors, in particular to a closed corridor for conveying concrete sand and gravel in a large-scale mixing plant. Background Art

[0002] Belt conveyors are used to transport aggregates between the mixing plant, workshops, silos and other links of the concrete mixing system. There are two forms of overhead belt conveyors. The trestle for the mixing plant and station loading belt conveyors adopts a bottom-supported trestle, and the others adopt an top-supported trestle. The closed corridor for conveying concrete sand and gravel in large mixing plants is a common trestle structure.

[0003] The existing large-scale concrete sand and gravel conveying closed corridor lacks a certain expansion joint structure, which makes it easy to produce certain temperature stress under the influence of high temperature, thus affecting the overall structural strength and service life of the pier.

[0004] Prior art 1 (application number CN201520640450.7, application date 2015-08-24 Chinese patent) discloses a feeder trestle expansion joint, wherein a rubber water stop is fixedly arranged at the bottom of the feeder trestle expansion joint between the upper reinforced concrete bottom layer and the lower reinforced concrete bottom layer, one end of the rubber water stop is fixedly cast in the upper reinforced concrete bottom layer, and the other end of the rubber water stop is fixedly cast in the lower reinforced concrete bottom layer, and an asphalt hemp fiber filling layer is filled in the feeder trestle expansion joint above the rubber water stop, thereby maintaining the function of the expansion joint and well solving the sealing problem of the expansion joint, and the construction is simple and easy, and the cost is low;

[0005] Prior art 2 (Chinese patent with application number CN202020343166.4 and application date 2020-03-18) discloses a leak-proof expansion joint structure for a conveyor trestle, which uses a waterstop to softly connect the upper trestle and the lower trestle to eliminate the thermal expansion and contraction of the steel structure. A polymer sealant layer is provided on the waterstop to improve the leak-proofness of the expansion joint, and a concrete surface layer is provided on the polymer sealant layer to protect the waterstop and the polymer sealant layer from wear. A leak-proof expansion joint structure for a conveyor trestle of the present invention solves the problem of serious water leakage caused by cracks between trestles. The present invention has a simple structure and good leak-proof performance, and can be used for leak-proofing of expansion joints between conveyor trestles.

[0006] Although the existing technology solves the stress changes caused by the temperature of the pier, the sealing structure at the expansion joint is fixed and cannot be automatically adjusted according to the temperature, so that the expansion joint can only play a sealing role but cannot assist in achieving temperature regulation inside the pier, which has certain practical defects. Summary of the invention

[0007] The purpose of the present invention is to provide a closed corridor for conveying concrete sand and gravel of a large-scale mixing plant, so as to solve the problem raised in the above-mentioned background technology that the closed corridor for conveying concrete sand and gravel of large-scale mixing plants on the market currently solves the stress changes caused by the temperature of the pier, but since the sealing structure at the expansion joint is fixed and cannot be automatically adjusted according to the temperature, the expansion joint can only play a sealing role but cannot assist in realizing the temperature regulation inside the pier.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a large-scale concrete sand and gravel conveying closed corridor for mixing plants, comprising a support frame fixedly installed above the ground, a lower support fixedly installed on the upper end of the support frame, a patterned steel plate fixedly installed on the upper surface of the lower support, and a belt conveyor fixedly installed on the upper end of the patterned steel plate, while an external steel structure truss is fixedly installed above the lower support and the patterned steel plate through a positioning and fixing support, and a color steel plate is fixedly installed on the outer side of the external steel structure truss;

[0009] It also includes: a pedestrian walkway, which is fixed on the patterned steel plate for staff to walk and inspect;

[0010] The expansion joint mechanism is installed between two adjacent sections of the trestles to ensure that the trestles can be stably thermally contracted. The expansion joint mechanism includes two fixed frames respectively fixedly installed on the outsides of the two sections of the trestles, and the fixed frames are fixedly connected to the lower bracket and the external steel structure truss by bolts, and a waterproof film is connected between the two fixed frames;

[0011] The guide assembly is installed between two fixed frames.

[0012] Preferably, the support frame is located below the connection between the two end trestles, and the top of the support frame is fixedly connected to the lower support longitudinal beam, and the lower support longitudinal beam is fixedly connected to the base of the belt conveyor.

[0013] By adopting the above technical solution, it can be ensured that the supporting frame body stably supports the lower bracket, and the lower bracket can stably support the belt conveyor through its longitudinal beam, thereby ensuring the supporting strength of the overall structure.

[0014] Preferably, the positioning and fixing support is arranged in an "L"-shaped structure, and mounting holes are evenly opened on the positioning and fixing support, and the mounting holes are arranged in an elliptical shape, and bolts pass through the mounting holes to connect the lower bracket, the patterned steel plate and the external steel structure truss.

[0015] By adopting the above technical solution, the positioning and fixing support can stably support and install the external steel structure truss, and the elliptical mounting hole on the positioning and fixing support can provide movement space for the bolts, so as to eliminate the temperature stress generated by the external steel structure truss due to temperature changes.

[0016] Preferably, the patterned steel plates and the color steel plates are sealed and spliced, and the patterned steel plates and color steel plates of adjacent trestles are sealed and connected via an expansion joint mechanism.

[0017] By adopting the above technical solution, the trestle can be kept in a sealed state as a whole, avoiding the influence of weather conditions on the humidity of the transported materials, and preventing the transported materials from falling from a high altitude, thereby improving the safety of equipment use.

[0018] Preferably, the guide assembly includes a telescopic guide plate fixedly mounted on the left fixed frame and a telescopic guide seat mounted on the right fixed frame, a sliding groove is provided on the inner side of the telescopic guide seat, and the telescopic guide plate is inserted into the inner side of the telescopic guide seat and forms a telescopic structure with the telescopic guide seat.

[0019] By adopting the above technical solution, when the trestle changes in size due to temperature changes during use, the telescopic guide plate can slide along the telescopic guide seat, thereby reducing the temperature stress at the connection of the trestle.

[0020] Preferably, a buffer spring is evenly and fixedly connected between the telescopic guide seat and the telescopic guide plate, and the telescopic guide plate forms an elastic telescopic structure through the buffer spring and the telescopic guide seat.

[0021] By adopting the above technical solution, the buffer spring plays a buffering role when the telescopic guide seat and the telescopic guide plate are telescopically adjusted.

[0022] Preferably, the expansion joint mechanism also includes a first adjustable film fixedly bonded to the side of the left fixed frame and a second adjustable film bonded to the side of the right fixed frame, and the first adjustable film and the second adjustable film are both fitted with the waterproof film to achieve a cooperative seal, and the adjacent ends of the first adjustable film and the second adjustable film are overlapped and hooked with each other.

[0023] By adopting the above technical solution, when the trestle is shrunk in a low temperature environment, the waterproof film and the first adjustable film and the second adjustable film can be elastically stretched, and the overlapping hook structure of the first adjustable film and the second adjustable film can avoid disconnection at the joint between the two.

[0024] Preferably, the expansion joint mechanism also includes a first rotating member and a second rotating member which are rotatably installed on the outer sides of the left and right fixed frames respectively, and the first rotating member and the second rotating member are fixedly bonded to the middle positions of the first adjustable film and the second adjustable film respectively, and at the same time, regulating magnetic sheets are fixedly bonded between the lower surface of the first rotating member and the upper surface of the second rotating member, and the relative magnetic poles of the two regulating magnetic sheets are opposite. When the first rotating member and the second rotating member are close to each other, they will rotate under the action of the magnetic force of the two regulating magnetic sheets to drive the first adjustable film and the second adjustable film to break away from the overlap and realize deformation separation.

[0025] By adopting the above technical solution, when the temperature is too high, the first rotating member and the second rotating member will gradually approach each other, so that the two rotate under the action of magnetic force, thereby driving the first adjustable film and the second adjustable film to separate, so that the air flow inside the trestle can be accelerated through the openings of the two, thereby achieving a certain degree of cooling.

[0026] The advantages and beneficial effects of the present invention are:

[0027] 1. The closed corridor for conveying concrete sand and gravel in the large-scale mixing plant of the present invention can stably support and protect the belt conveyor. The closed structure can improve the safety during the conveying process. The positioning and fixing of the support and the expansion joint mechanism can reduce the stress change of the trestle caused by temperature change, thereby further improving the structural stability of the trestle.

[0028] 2. The closed corridor for conveying concrete sand and gravel in the large-scale mixing plant of the present invention is provided with a positioning and fixing support, a mounting hole and an external steel structure truss. By passing bolts through the mounting holes and fixing them with the lower bracket and the external steel structure truss, the positioning and fixing support can stably support the external steel structure truss to ensure the installation stability of the color steel plate, and the elliptical mounting hole can eliminate the temperature stress generated by the truss due to temperature changes.

[0029] 3. The closed corridor for conveying concrete sand and gravel of the large mixing plant of the present invention is provided with a fixed frame and a waterproof film. The two sections of the trestles can be spliced ​​and assembled. When the trestles are affected by temperature and produce stress changes, the fixed frame can drive the waterproof film to shrink and stretch. At this time, the waterproof film, the first adjustable film and the second adjustable film can complete the closure of the trestles assembly.

[0030] 4. The closed corridor for conveying concrete sand and gravel of the large mixing plant of the present invention is provided with a first adjustable film, a second adjustable film, a first rotating member, a second rotating member and a regulating magnetic sheet. When the temperature of the operating environment of the trestle is too high, the first rotating member and the second rotating member will approach each other. When the two regulating magnetic sheets are close, the first rotating member and the second rotating member will elastically rotate under the action of magnetic force, thereby pulling the first adjustable film and the second adjustable film to release the erection, so that the two are deformed and separated, realizing the opening operation of the expansion joint mechanism, thereby promoting the air flow inside and outside the trestle, realizing the temperature control adjustment inside the trestle, and avoiding the expansion joint mechanism being limited by the expansion limit.

[0031] 5. The closed corridor for conveying concrete sand and gravel in the large-scale mixing plant of the present invention is provided with a color steel plate and a fixed frame. The color steel plate and the fixed frame can be used to close the trestle, thereby reducing the noise impact generated by the conveying equipment on the inner side of the trestle. At the same time, the closed structure can protect the conveying equipment and the conveyed materials to achieve the purpose of rain and wind protection, so that the equipment can work in different weather environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0033] Figure 2 It is a bottom view structural schematic diagram of the present invention;

[0034] Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention;

[0035] Figure 4 This is a schematic diagram of the installation structure of the positioning and fixing support of the present invention;

[0036] Figure 5 This is a schematic diagram of the installation structure of the fixing frame of the present invention;

[0037] Figure 6 It is a schematic diagram of the connection structure of the telescopic guide seat and the telescopic guide plate of the present invention;

[0038] Figure 7 It is a schematic diagram of the cross-sectional structure of the fixing frame of the present invention;

[0039] Figure 8 For the present invention Figure 7 The enlarged structural diagram at A in the middle;

[0040] Fig. 9 It is a schematic diagram of the connection structure of the waterproof film, the first adjustable film and the second adjustable film of the present invention.

[0041] In the figure: 1. Support frame; 2. Lower bracket; 3. Patterned steel plate; 4. Tape machine; 5. Positioning and fixing support; 501, mounting hole; 6. External steel structure truss; 7. Color steel plate; 8. Walkway; 9. Fixed frame; 10. Telescopic guide seat; 11. Slide; 12. Telescopic guide plate; 13. Buffer spring; 14. Waterproof film; 15. First adjustable film; 16. Second adjustable film; 17. First rotating member; 18. Second rotating member; 19. Control magnetic sheet. DETAILED DESCRIPTION

[0042] The present invention is further described in detail below through specific examples. The following examples are only illustrative and not restrictive, and the protection scope of the present invention cannot be limited thereto.

[0043] Example 1: Please refer to Figure 1-Figure 3As shown, the lower support 2 and the external steel structure truss 6 of the existing large-scale concrete sand and gravel conveying closed gallery are mostly directly connected by bolts, which makes the connection easily produce temperature stress changes due to temperature changes, thereby affecting the structural stability of the device. In order to solve this technical problem, this embodiment discloses the following technical content;

[0044] A closed corridor for conveying concrete sand and gravel in a large mixing plant comprises a support frame 1 fixedly installed above the ground, a lower support 2 is fixedly installed on the upper end of the support frame 1, a patterned steel plate 3 is fixedly installed on the upper surface of the lower support 2, and a belt conveyor 4 is fixedly installed on the upper end of the patterned steel plate 3, and an external steel structure truss 6 is fixedly installed above the lower support 2 and the patterned steel plate 3 through a positioning and fixing support 5, and a color steel plate 7 is fixedly installed on the outer side of the external steel structure truss 6;

[0045] It also includes: a walkway 8, which is fixedly arranged on the patterned steel plate 3 for staff to walk and inspect; the support frame 1 is located below the connection between the two end trestles, and the top of the support frame 1 is fixedly connected to the longitudinal beam of the lower bracket 2, and the longitudinal beam of the lower bracket 2 is fixedly connected to the base of the belt conveyor 4.

[0046] The positioning and fixing support 5 is arranged in an "L"-shaped structure, and mounting holes 501 are evenly opened on the positioning and fixing support 5, and the mounting holes 501 are arranged in an elliptical shape. At the same time, bolts pass through the mounting holes 501 to connect the lower bracket 2, the patterned steel plate 3 and the external steel structure truss 6.

[0047] By adopting the above technical scheme, the support frame 1 can stably support the lower support 2 of the two adjacent sections of the trestles, and the longitudinal beam of the lower support 2 is fixedly connected to the base of the belt conveyor 4, so that the support frame 1 can provide stable supporting force for the belt conveyor 4 through the lower support 2, ensuring the installation stability of the belt conveyor 4, and the lower support 2 and the patterned steel plate 3 are fixedly connected with the external steel structure truss 6 through the positioning and fixing support 5, which can ensure the installation stability of the external steel structure truss 6. At the same time, the mounting hole 501 opened on the positioning and fixing support 5 is an elliptical structure, so that when the temperature changes, the bolt can be adjusted along the mounting hole 501, so as to eliminate the temperature stress generated by the external steel structure truss 6 with the temperature change, further ensuring the structural stability of the trestles, and at the same time, the closed corridor structure is adopted, which can effectively reduce the noise impact during the operation of the conveying equipment and achieve the purpose of effective noise reduction. At the same time, the closed structure can achieve effective rain and wind protection, and avoid the external environment from affecting the normal transportation of materials.

[0048] Embodiment 2: The technical content disclosed in this embodiment is a further improvement on the above embodiment 1. Although the existing large-scale concrete sand and gravel conveying closed corridor of the mixing plant has a certain expansion joint adjustment, its expansion joint structure is single and cannot assist the temperature control inside the trestle under high temperature conditions. In order to further solve this technical problem, this embodiment discloses the following technical content, such as Figure 2 and Figure 5-Figure 9 As shown;

[0049] The expansion joint mechanism is installed between two adjacent sections of the trestles to ensure that the trestles can be stably thermally contracted. The expansion joint mechanism includes two fixed frames 9 respectively fixedly installed on the outsides of the two sections of the trestles, and the fixed frames 9 are fixedly connected to the lower bracket 2 and the external steel structure truss 6 by bolts, and a waterproof film 14 is connected between the two fixed frames 9;

[0050] A guide assembly is installed between two fixed frames 9;

[0051] The patterned steel plates 3 and the color steel plates 7 are sealed and spliced, and the patterned steel plates 3 and color steel plates 7 of adjacent trestles are sealed and connected via an expansion joint mechanism.

[0052] The guide assembly includes a telescopic guide plate 12 fixedly mounted on the left fixed frame 9 and a telescopic guide seat 10 mounted on the right fixed frame 9. A slide groove 11 is provided on the inner side of the telescopic guide seat 10, and the telescopic guide plate 12 is inserted into the inner side of the telescopic guide seat 10 to form a telescopic structure with the telescopic guide seat 10.

[0053] A buffer spring 13 is evenly and fixedly connected between the telescopic guide seat 10 and the telescopic guide plate 12 , and the telescopic guide plate 12 forms an elastic telescopic structure through the buffer spring 13 and the telescopic guide seat 10 .

[0054] The expansion joint mechanism also includes a first adjustable film 15 fixedly bonded to the side of the left fixed frame 9 and a second adjustable film 16 bonded to the side of the right fixed frame 9, and the first adjustable film 15 and the second adjustable film 16 are both fitted with the waterproof film 14 to achieve a cooperative seal, and the adjacent ends of the first adjustable film 15 and the second adjustable film 16 are overlapped and hooked with each other.

[0055] The expansion joint mechanism also includes a first rotating member 17 and a second rotating member 18 which are rotatably installed on the outside of the left and right fixed frames 9 respectively, and the first rotating member 17 and the second rotating member 18 are fixedly bonded to the middle positions of the first adjustable film 15 and the second adjustable film 16 respectively, and at the same time, a regulating magnetic sheet 19 is fixedly bonded between the lower surface of the first rotating member 17 and the upper surface of the second rotating member 18, and the opposite surfaces of the two regulating magnetic sheets 19 have opposite magnetic poles. When the first rotating member 17 and the second rotating member 18 are close to each other, they will rotate under the magnetic force of the two regulating magnetic sheets 19 to drive the first adjustable film 15 and the second adjustable film 16 to break away from the overlap and realize deformation separation.

[0056] By adopting the above technical solution, when the outside temperature decreases and the distance between the two sections of the trestles becomes farther, the two fixed frames 9 will move away from each other. At this time, the telescopic guide plate 12 will slide on the inner side of the telescopic guide seat 10, so that the waterproof film 14 will be elastically stretched. At the same time, the first adjustable film 15 and the second adjustable film 16 will also be elastically stretched because the overlapping ends of the two are hooked together, thereby ensuring the sealing effect between the two fixed frames 9. When the temperature rises, the two fixed frames 9 will gradually approach each other, and the telescopic guide plate 12 will slide on the inner side of the telescopic guide seat 10 and squeeze the buffer spring 13. When the outside temperature is too high, the first rotating member 17 and the second rotating member 18 will move closer to each other, so that the two outside The regulating magnetic sheets 19 on the sides are close to each other, so that the first rotating member 17 and the second rotating member 18 are elastically rotated under the action of magnetic force, thereby pulling the first adjustable film 15 and the second adjustable film 16 to deform and release the overlapping state. At this time, there is an opening between the first adjustable film 15 and the second adjustable film 16, so that outside air can flow into the interior of the pier, avoiding the continuous increase in the temperature inside the pier, realizing ventilation inside the pier, thereby reducing the temperature inside the pier and achieving automatic and effective cooling. Furthermore, a sprinkler pipe can be installed on the outside of the steel structure truss 6 of the pier, and spray dust removal can be achieved through an atomizing nozzle to ensure the working environment inside the pier, and further cooling of the interior of the pier can be achieved through spraying.

[0057] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will appreciate that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A closed corridor for conveying concrete sand and gravel in a large mixing plant, comprising a support frame (1) fixedly installed above the ground, wherein a lower support (2) is fixedly installed on the upper end of the support frame (1), and a patterned steel plate (3) is fixedly installed on the upper surface of the lower support (2), and a belt conveyor (4) is fixedly installed on the upper end of the patterned steel plate (3), and an external steel structure truss (6) is fixedly installed above the lower support (2) and the patterned steel plate (3) through a positioning fixed support (5), and a color steel plate (7) is fixedly installed on the outer side of the external steel structure truss (6); It is characterized in that Also includes: A pedestrian walkway (8) is fixedly arranged on the patterned steel plate (3) for workers to walk and inspect; An expansion joint mechanism is installed between two adjacent sections of the trestles to ensure that the trestles can be stably thermally contracted, the expansion joint mechanism comprising two fixed frames (9) respectively fixedly installed on the outsides of the two sections of the trestles, and the fixed frames (9) are fixedly connected to the lower bracket (2) and the external steel structure truss (6) by bolts, and a waterproof film (14) is connected between the two fixed frames (9); The guide assembly is installed between the two fixed frames (9).

2. The closed corridor for conveying concrete sand and gravel in a large mixing plant according to claim 1 is characterized by: The support frame (1) is located below the connection between the two end trestles, and the top of the support frame (1) is fixedly connected to the longitudinal beam of the lower support (2), and the longitudinal beam of the lower support (2) is fixedly connected to the base of the belt conveyor (4).

3. The closed corridor for conveying concrete sand and gravel in a large mixing plant according to claim 1 is characterized by: The positioning and fixing support (5) is arranged in an "L"-shaped structure, and mounting holes (501) are evenly arranged on the positioning and fixing support (5), and the mounting holes (501) are arranged in an elliptical shape. At the same time, bolts penetrate the mounting holes (501) to connect the lower bracket (2), the patterned steel plate (3) and the external steel structure truss (6).

4. The closed corridor for conveying concrete sand and gravel in a large mixing plant according to claim 1 is characterized by: The patterned steel plate (3) and the color steel plate (7) are sealed and spliced, and the patterned steel plates (3) and color steel plates (7) of adjacent trestles are sealed and connected via an expansion joint mechanism.

5. The closed corridor for conveying concrete sand and gravel in a large mixing plant according to claim 1 is characterized by: The guide assembly comprises a telescopic guide plate (12) fixedly mounted on a left fixed frame (9) and a telescopic guide seat (10) mounted on a right fixed frame (9); a slide groove (11) is provided on the inner side of the telescopic guide seat (10); and the telescopic guide plate (12) is plugged into the inner side of the telescopic guide seat (10) and forms a telescopic structure with the telescopic guide seat (10).

6. The closed corridor for conveying concrete sand and gravel in a large mixing plant according to claim 5 is characterized by: A buffer spring (13) is evenly and fixedly connected between the telescopic guide seat (10) and the telescopic guide plate (12), and the telescopic guide plate (12) forms an elastic telescopic structure through the buffer spring (13) and the telescopic guide seat (10).

7. The closed corridor for conveying concrete sand and gravel in a large mixing plant according to claim 1 is characterized by: The expansion joint mechanism also includes a first adjustable film (15) fixedly bonded to the side of the left fixed frame (9) and a second adjustable film (16) bonded to the side of the right fixed frame (9), and the first adjustable film (15) and the second adjustable film (16) are both fitted with the waterproof film (14) to achieve a matching seal, and the adjacent ends of the first adjustable film (15) and the second adjustable film (16) are overlapped and hooked with each other.

8. The closed corridor for conveying concrete sand and gravel in a large mixing plant according to claim 1 is characterized by: The expansion joint mechanism also includes a first rotating member (17) and a second rotating member (18) which are rotatably mounted on the outer sides of the left and right fixed frames (9), respectively, and the first rotating member (17) and the second rotating member (18) are fixedly bonded to the middle positions of the first adjustable film (15) and the second adjustable film (16), respectively. At the same time, a regulating magnetic sheet (19) is fixedly bonded between the lower surface of the first rotating member (17) and the upper surface of the second rotating member (18), and the magnetic poles of the two regulating magnetic sheets (19) are opposite. When the first rotating member (17) and the second rotating member (18) are close to each other, they will rotate under the magnetic force of the two regulating magnetic sheets (19) to drive the first adjustable film (15) and the second adjustable film (16) to break away from the overlap and realize deformation separation.

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