Arc-shaped prefabricated plain concrete bench mold and installation method thereof

Abstract

A curved prefabricated plain concrete bench mold and its installation method, the mold includes a base frame for fixing to the ground, the upper surface of the base frame is provided with a curved bottom mold, the two arc edges of the bottom mold are respectively provided with a fixed side mold and a movable side mold; an end mold is provided between the two ends of the fixed side mold and the movable side mold; an inverted U-shaped hanging plate is provided on the top of the movable side mold, and a hanging mold corresponding to the shape of the bottom mold is provided at the end of the hanging plate; the bottom mold includes a circular arc-shaped horizontal bottom mold plate, the fixed side mold is provided with a fixed side mold plate; the movable side mold is provided with a movable side mold plate, the inner side of the end mold is provided with an end mold plate, the bottom of the hanging mold is provided with a hanging mold plate, and the two ends of the hanging mold plate are mounted on the top surfaces of the two end molds; the hanging mold plate, the end mold plate, the fixed side mold plate, the movable side mold plate, and the bottom mold plate form a casting space. The present invention can ensure both dimensional accuracy and rigidity and stability, and at the same time, the mold can be quickly and conveniently supported and disassembled.

Description

Technical Field

[0001] The invention belongs to the technical field of garden landscape engineering, and particularly relates to an arc-shaped prefabricated plain concrete bench mold and an installation method thereof. Background Art

[0002] The materials of benches range from wood, plastic, resin, stainless steel, and stone. Fair-faced concrete maintains the original texture and style of concrete materials. Compared with other materials, fair-faced concrete has the advantages of strong durability and low maintenance cost. It can be made into different shapes according to design needs, which also brings a more long-term decorative effect to the project. Prefabricated fair-faced benches are now more and more widely used in landscapes such as parks and squares. Broken-line and straight-line fair-faced benches are common, while curved fair-faced concrete benches are very rare. At present, the production process of steel molds for straight-line and broken-line prefabricated fair-faced benches is relatively mature, but the production of curved fair-faced concrete bench molds is more difficult. The main difficulty lies in the application of arc-shaped round chamfering and rapid top-pull devices, which not only ensures dimensional accuracy, but also ensures its rigidity and stability. At the same time, the mold must be quickly and conveniently supported and disassembled. The quality of the processing of the curved fair-faced bench mold is the ultimate guarantee of the quality of concrete components, so it needs to be focused on research and development. Summary of the invention

[0003] The purpose of the present invention is to provide an arc-shaped prefabricated plain concrete bench mould, which can ensure both dimensional accuracy and rigidity and stability, and can also quickly and conveniently erect and dismantle the mould.

[0004] Another object of the present invention is to provide a method for installing an arc-shaped prefabricated plain concrete bench mold, which has simple and clear process steps, is quick and convenient to erect and dismantle the mold, and has high product precision and stability.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A curved prefabricated plain concrete bench mould, comprising a bottom frame for fixing to the ground, an arc-shaped bottom mould being arranged on the upper surface of the bottom frame, a fixed side mould and a movable side mould being arranged on two arc edges of the bottom mould respectively; an end mould being arranged between both ends of the fixed side mould and the movable side mould; an inverted U-shaped hanging plate being arranged on the top of the movable side mould, a hanging mould corresponding to the shape of the bottom mould being arranged at the end of the hanging plate;

[0007] The bottom mold comprises a circular arc-shaped horizontal bottom mold plate, the bottom mold plate has two circular arc edges, namely a first edge and a second edge, the length of the first edge is greater than the length of the second edge; the first edge is fixed to the top of the first slat, the cross section of the first slat is circular arc-shaped, the top exceeds the top surface of the bottom mold plate, and a rounded corner is provided on the side facing the first edge; the second edge is fixed to the top of the second slat, the cross section of the second slat is circular arc-shaped, the top exceeds the top surface of the bottom mold plate, and a rounded corner is provided on the side facing the second edge; the bottom surface of the bottom mold plate is provided with a plurality of bottom mold stiffening ribs with arc-shaped cross sections, and the bottom of each bottom mold stiffening rib is fixed to the base frame;

[0008] The fixed side mold is arranged outside the first edge, including a fixed upper belt plate and a fixed lower belt plate, and the two are fixedly connected by a plurality of fixed rib plates; the side surfaces of each fixed rib plate are fixedly connected to the fixed side template, and the cross section of the fixed side template is arc-shaped, and the curvature corresponds to the first edge; the bottom of the fixed lower belt plate is fixed to the base frame, and the bottom of the fixed side template is fixed to the top of the first plate strip; the top of the fixed upper belt plate is provided with a fixed arc belt plate, and the two are fixedly connected by a pin, and the top of the pin is sleeved with a pin plate with a trapezoidal longitudinal section;

[0009] The movable side mold is arranged on the outside of the second edge, including a movable upper belt plate and a movable lower belt plate, which are fixedly connected by a plurality of movable rib plates; the side surfaces of each movable rib plate are fixedly connected to the movable side template, the cross section of the movable side template is arc-shaped, and the curvature corresponds to the second edge; the bottom of the movable lower belt plate is fixed to the movable arc belt plate, and the two ends of the movable arc belt plate are slidably arranged on the slide rails on the base frame, so that the movable side mold can move away from or approach the second edge; the bottom of the movable side template is tightly attached to the outside of the top of the second slat; the movable rib plate is connected to a quick jacking device, and the quick jacking device is fixed to the slide rail to press the movable side template to the second edge;

[0010] An end template is arranged inside the end mold, a hanging template is arranged at the bottom of the hanging mold, and two ends of the hanging template are mounted on the top surfaces of the two end molds; a casting space is formed between the hanging template, the end template, the fixed side template, the movable side template and the bottom template.

[0011] Furthermore, the quick pulling and pushing device includes a U-shaped pulling and pushing base, the bottom of which is fixed on the slide rail, a horizontal sleeve is provided at one end of the top, and the other end is hinged to the bottom end of the handle; a sliding rod is passed through the sleeve, one end of the sliding rod is fixedly connected to the movable rib plate, and the other end is hinged to one end of the connecting plate, and the other end of the connecting plate is hinged to the bottom of the handle.

[0012] Furthermore, a positioning plate is provided inside the top-pull base.

[0013] Furthermore, a nut is provided on the side of the movable rib plate, and an external thread corresponding to the nut is provided on the end of the sliding rod.

[0014] Furthermore, the bottom mold stiffening rib adjacent to the first slat is a first rib, and the first rib is fixedly connected to the first slat via a plurality of first transverse ribs; the bottom mold stiffening rib adjacent to the second slat is a second rib, and the second rib is fixedly connected to the second slat via a plurality of second transverse ribs.

[0015] Furthermore, the lengths of the first transverse ribs and the second transverse ribs are both 50-100 mm, and the spacings between the first transverse ribs and the second transverse ribs are both 200-300 mm.

[0016] Furthermore, a rubber strip groove is formed between the bottom of the movable side template, the side surface of the movable lower belt plate, and the top surface of the movable arc belt plate, and a rubber strip is arranged in the rubber strip groove.

[0017] Furthermore, the base frame is fan-shaped, and the centers of the arcs where the first edge and the second edge are located coincide with each other.

[0018] A method for installing the arc-shaped prefabricated plain concrete bench mold comprises the following steps:

[0019] A. Chassis forming: The steel structure chassis is welded into a fan-shaped steel structure with channel steel;

[0020] B. Bottom mold forming: The bottom mold plate and the bottom mold stiffening rib plate are formed by laser blanking. The bottom mold stiffening rib plate is rolled into an arc shape and welded with the bottom mold plate to ensure that the bottom mold stiffening rib plate is perpendicular to the bottom mold plate; the first transverse rib plate and the second transverse rib plate are welded in sections along the bottom mold stiffening rib plate; the rounded ends of the first plate strip and the second plate strip are welded and fixed on the bottom mold plate to ensure that the first plate strip and the second plate strip are perpendicular to the bottom mold plate;

[0021] C. Fixed side mold forming: The fixed side template, fixed upper strip, fixed lower strip, and fixed arc strip are all formed by laser cutting, among which the fixed arc strip and the fixed upper strip have corresponding holes at the positions with arc length spacing of 400-600mm; the fixed rib plate has corresponding notches reserved at the intersection of the first plate strip and the fixed side template; first spot weld the fixed side template on the first plate strip to ensure that the two are straight and then fully welded; then weld the fixed lower strip and fixed rib plate respectively, and weld the fixed arc strip; align the holes of the fixed arc strip and the fixed upper strip, and connect and fix them with pins and pin plates;

[0022] D. Movable side mold forming: The movable side mold, movable upper strip plate, movable lower strip plate, movable rib plate and movable arc strip plate are all formed by laser cutting; the movable side mold is rolled according to the predetermined arc, the movable side mold and the movable lower strip plate are welded while ensuring verticality, and then the movable rib plate and the movable upper strip plate are welded; the movable rib plate, movable arc strip plate and movable lower strip plate are welded to form a notch, and a rubber sealing strip is embedded;

[0023] E. Hanging mold forming: connect and fix the hanging mold with the movable side mold using a hanging plate;

[0024] F. End mold forming: fix the two end molds at both ends of the bottom mold with pins, and connect them with the fixed side mold and the movable side mold with a quick wrench;

[0025] G. Installation of the quick jacking and pulling device: Weld and fix the jacking and pulling base of the quick jacking and pulling device to the slide rail of the base frame, and connect the sliding rod with the nut of the movable side mold.

[0026] The beneficial effects of the present invention are as follows: the arc-shaped prefabricated plain concrete bench mold and its installation method can ensure accurate size through precise steel plate blanking and machining; the mold is constructed in steps to ensure full welds and maximize the clear surface effect of the component. The arc-shaped prefabricated plain concrete bench mold and its installation method can expand the application scope of steel molds in the field of landscape garden prefabricated component molds. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the arc-shaped prefabricated plain concrete bench mold of the present invention.

[0028] Figure 2 It is a top view of the arc-shaped prefabricated plain concrete bench mold of the present invention.

[0029] Figure 3 The present invention is a schematic structural diagram of the bottom frame of the arc-shaped prefabricated plain concrete bench mold.

[0030] Figure 4 The present invention is a schematic structural diagram of the bottom mold of the arc-shaped prefabricated plain concrete bench mold.

[0031] Figure 5 The present invention is a schematic diagram of the distribution of the first transverse ribs and the second transverse ribs of the bottom mold of the arc-shaped prefabricated plain concrete bench mold.

[0032] Figure 6 It is a structural schematic diagram of a fixed side mold of an arc-shaped prefabricated plain concrete bench mold of the present invention.

[0033] Figure 7 The present invention is a schematic structural diagram of a movable side mold of an arc-shaped prefabricated plain concrete bench mold.

[0034] Figure 8 The structure diagram of the quick jacking and pulling device of the arc-shaped prefabricated plain concrete bench mold of the present invention when it is pushed into place Figure 1 .

[0035] Fig. 9 The structure diagram of the quick jacking and pulling device of the arc-shaped prefabricated plain concrete bench mold of the present invention when it is pushed loose Figure 2 . DETAILED DESCRIPTION

[0036] The present invention is further described in detail below in conjunction with the embodiments and drawings.

[0037] like Figure 1 , Figure 2 , Figure 3 As shown, the present invention provides an arc-shaped prefabricated plain concrete bench mold, which includes a base frame 1 for fixing to the ground, the base frame 1 is fan-shaped, and an arc-shaped bottom mold 2 is provided on the upper surface of the base frame 1, and two arc edges of the bottom mold 2 are respectively provided with a fixed side mold 3 and a movable side mold 4. End molds 5 are provided between the two ends of the fixed side mold 3 and the movable side mold 4. An inverted U-shaped hanging plate 61 is provided on the top of the movable side mold 4, and a hanging mold 6 corresponding to the shape of the bottom mold 2 is provided at the end of the hanging plate 61.

[0038] like Figure 1 , Figure 4 , Figure 5 As shown, the bottom mold 2 includes a circular arc-shaped horizontal bottom mold plate 21, and the bottom mold plate 21 has two circular arc edges, namely a first edge 211 and a second edge 212. The length of the first edge 211 is greater than the length of the second edge 212, and the centers of the arcs where the first edge 211 and the second edge 212 are located coincide with each other. The first edge 211 is fixed to the top of the first slat 22, and the cross section of the first slat 22 is circular arc-shaped, the top exceeds the top surface of the bottom mold plate 21, and a rounded corner is provided on the side facing the first edge 211. The second edge 212 is fixed to the top of the second slat 23, and the cross section of the second slat 23 is circular arc-shaped, the top exceeds the top surface of the bottom mold plate 21, and a rounded corner is provided on the side facing the second edge 212. The bottom surface of the bottom mold plate 21 is provided with a plurality of bottom mold stiffening ribs 24 with arc-shaped cross sections, and the bottom of each bottom mold stiffening rib 24 is fixed to the base frame 1. The bottom mold stiffening rib 24 adjacent to the first plate strip 22 is a first rib 241, and the first rib 241 is fixedly connected to the first plate strip 22 via a plurality of first transverse ribs 25. The bottom mold stiffening rib 24 adjacent to the second plate strip 23 is a second rib 242, and the second rib 242 is fixedly connected to the second plate strip 23 via a plurality of second transverse ribs 26. The lengths of the first transverse rib 25 and the second transverse rib 26 are both 50-100 mm, and the spacings between the first transverse rib 25 and the second transverse rib 26 are both 200-300 mm.

[0039] like Figure 1 , Figure 6 As shown, the fixed side mold 3 is arranged outside the first edge 211, including a fixed upper strip plate 31 and a fixed lower strip plate 32, which are fixedly connected by a plurality of fixed ribs 33. The sides of each fixed rib plate 33 are fixedly connected to a fixed side mold plate 34, and the cross section of the fixed side mold plate 34 is arc-shaped, and the curvature corresponds to the first edge 211. The bottom of the fixed lower strip plate 32 is fixed to the base frame 1, and the bottom of the fixed side mold plate 34 is fixed to the top of the first strip 22. A fixed arc strip plate 35 is provided on the top of the fixed upper strip plate 31, and the two are fixedly connected by a pin 36, and a pin plate 37 with a trapezoidal longitudinal section is sleeved on the top of the pin 36.

[0040] like Figure 1 , Figure 7 As shown, the movable side mold 4 is arranged outside the second edge 212, including a movable upper belt plate 41 and a movable lower belt plate 42, which are fixedly connected by a plurality of movable ribs 43. The sides of each movable rib plate 43 are fixedly connected to a movable side template 44, and the cross section of the movable side template 44 is arc-shaped, and the curvature corresponds to the second edge 212. The bottom of the movable lower belt plate 42 is fixed on a movable arc belt plate 45, and the two ends of the movable arc belt plate 45 are slidably arranged on a slide rail 46 on the base frame 1, so that the movable side mold 4 can move away from or approach the second edge 212. The bottom of the movable side template 44 is tightly attached to the outer side of the top of the second slat 23. The movable rib plate 43 is connected to a quick-pull device 7, and the quick-pull device 7 is fixed on the slide rail 46 to press the movable side template 44 toward the second edge 212. A rubber strip groove 47 is formed between the bottom of the movable side template 44 , the side surface of the movable lower belt plate 42 , and the top surface of the movable arc belt plate 45 , and a rubber strip is disposed in the rubber strip groove 47 .

[0041] like Figure 8 , Fig. 9 As shown, the quick pulling device 7 includes a U-shaped pulling base 71, the bottom of which is fixed on the slide rail 46, a horizontal sleeve 72 is provided at one end of the top, and the other end is hinged to the bottom end of the handle 73. A sliding rod 74 is inserted into the sleeve 72, one end of which is fixedly connected to the movable rib plate 43, and the other end is hinged to one end of a connecting plate 75, and the other end of the connecting plate 75 is hinged to the bottom of the handle 73. A positioning plate 76 is provided inside the pulling base 71 to ensure that the movable side mold 4 is supported in place when the handle 73 contacts the top of the positioning plate 76. A nut 77 is provided on the side of the movable rib plate 43, and an external thread corresponding to the nut 77 is provided at the end of the sliding rod 74.

[0042] The end mold 5 is provided with an end mold plate inside, and the bottom of the hanging mold 6 is provided with a hanging mold plate 62, and the two ends of the hanging mold plate 62 are mounted on the top surfaces of the two end molds 5. The hanging mold plate 62, the end mold plate, the fixed side mold plate 34, the movable side mold plate 44, and the bottom mold plate 21 form a pouring space.

[0043] The present invention also provides a method for installing the arc-shaped prefabricated plain concrete bench mold, which includes the following steps: Template processing drawing design stage: The template is generally set to have one side as a fixed side mold and one side as a movable side mold. The movable side mold adopts a quick top-pull device to facilitate the support and disassembly of the template. Correspondingly, the arc-shaped fillet of the bottom plate plain surface is formed in two ways on the fixed side mold and the movable side mold respectively, and forms an integral body with the bottom mold to achieve a clear water effect. The specific installation method steps are as follows:

[0044] A. Forming of chassis 1: According to the design drawing requirements, channel steel is welded into a fan-shaped steel structure chassis;

[0045] B. Forming of the bottom mold 2: The bottom mold plate 21 and the bottom mold stiffening rib plate 24 are formed by laser blanking. The bottom mold stiffening rib plate 24 is rolled into an arc shape and welded to the bottom mold plate 21 to ensure that the bottom mold stiffening rib plate 24 is perpendicular to the bottom mold plate 21; the first transverse rib plate 25 and the second transverse rib plate 26 are welded in sections along the bottom mold stiffening rib plate 24; the rounded ends of the first plate strip 22 and the second plate strip 23 are welded and fixed on the bottom mold plate 21 to ensure that the first plate strip 22 and the second plate strip 23 are perpendicular to the bottom mold plate 21; the bottom mold plate 21 and the back of the first plate strip 22 and the second plate strip 23 are fully welded to prevent leakage;

[0046] C. Forming of the fixed side mold 3: The fixed side mold plate 34, the fixed upper strip plate 31, the fixed lower strip plate 32, and the fixed arc strip plate 35 are all formed by laser blanking, wherein corresponding holes are opened at the positions of the fixed arc strip plate 35 and the fixed upper strip plate 31 with an arc length spacing of 400-600mm, so as to facilitate the later fixing with pins; the fixed rib plate 33 reserves a corresponding notch at the intersection of the first plate strip 22 and the fixed side mold plate 34; first spot weld the fixed side mold plate 34 on the first plate strip 22 to ensure that the two are straight and then fully welded; then weld the fixed lower strip plate 32 and the fixed rib plate 33 respectively, and weld the fixed arc strip plate 35; align the hole positions of the fixed arc strip plate 35 and the fixed upper strip plate 31, and connect and fix them with pins 36 and pin plates 37;

[0047] D. Forming of the movable side mold 4: The movable side mold plate 44, the movable upper belt plate 41, the movable lower belt plate 42, the movable rib plate 43 and the movable arc belt plate 45 are all formed by laser blanking; the movable side mold plate 44 is rolled according to a predetermined arc, and the movable side mold plate 44 and the movable lower belt plate 42 are welded while ensuring verticality, and then the movable rib plate 43 and the movable upper belt plate 41 are welded; the movable rib plate 43, the movable arc belt plate 45 and the movable lower belt plate 42 are welded to form a notch, and a rubber sealing strip is embedded;

[0048] E. Hanging mold 6 molding: the hanging mold 6 is connected and fixed to the movable side mold 4 with a hanging plate 61;

[0049] F. Forming of the end mold 5: fix the two end molds 5 at both ends of the bottom mold 2 with pins, and connect them with the fixed side mold 3 and the movable side mold 4 with a quick wrench;

[0050] G. Installation of the quick-pull device 7: The pull-up base 71 of the quick-pull device 7 is welded and fixed on the slide rail 46 of the base frame 1. The handle 73 of the quick-pull device 7 is a semicircular flat shape with a hole. The sleeve 72 is welded and fixed on the pull-up base 71. The handle 73 is located in the middle of the pull-up base 71 and is connected by a pin. A positioning plate 76 is set below the connection hole between the handle 73 and the connecting plate 75 to ensure that the movable side mold 4 is pushed into place when the connecting plate 75 is in a horizontal position. When the handle 73 is raised and lowered, the sliding rod 74 moves horizontally along the slide rail 46 driven by the connecting plate 75 to pull the movable side mold 4 to move. The nut 77 is welded on the movable side mold 4 according to the designed position, and the sliding rod 74 of the quick-pull device 7 is screwed into the nut 77, so that the device can drive the movable side mold 4 to move horizontally, so as to achieve the effect of quickly supporting and dismantling the side mold.

[0051] The above is only a preferred embodiment of the present invention, and does not limit the structure of the present invention in any form. Any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A curved prefabricated plain concrete bench mould, characterized in that: It comprises a bottom frame for fixing to the ground, an arc-shaped bottom mold is arranged on the upper surface of the bottom frame, and a fixed side mold and a movable side mold are arranged on two arc edges of the bottom mold respectively; an end mold is arranged between the two ends of the fixed side mold and the movable side mold; an inverted U-shaped hanging plate is arranged on the top of the movable side mold, and a hanging mold corresponding to the shape of the bottom mold is arranged at the end of the hanging plate; The bottom mold comprises a circular arc-shaped horizontal bottom mold plate, the bottom mold plate has two circular arc edges, namely a first edge and a second edge, the length of the first edge is greater than the length of the second edge; the first edge is fixed to the top of the first slat, the cross section of the first slat is circular arc-shaped, the top exceeds the top surface of the bottom mold plate, and a rounded corner is provided on the side facing the first edge; the second edge is fixed to the top of the second slat, the cross section of the second slat is circular arc-shaped, the top exceeds the top surface of the bottom mold plate, and a rounded corner is provided on the side facing the second edge; the bottom surface of the bottom mold plate is provided with a plurality of bottom mold stiffening ribs with arc-shaped cross sections, and the bottom of each bottom mold stiffening rib is fixed to the base frame; The fixed side mold is arranged outside the first edge, including a fixed upper belt plate and a fixed lower belt plate, and the two are fixedly connected by a plurality of fixed rib plates; the side surfaces of each fixed rib plate are fixedly connected to the fixed side template, and the cross section of the fixed side template is arc-shaped, and the curvature corresponds to the first edge; the bottom of the fixed lower belt plate is fixed to the base frame, and the bottom of the fixed side template is fixed to the top of the first plate strip; the top of the fixed upper belt plate is provided with a fixed arc belt plate, and the two are fixedly connected by a pin, and the top of the pin is sleeved with a pin plate with a trapezoidal longitudinal section; The movable side mold is arranged on the outside of the second edge, including a movable upper belt plate and a movable lower belt plate, which are fixedly connected by a plurality of movable rib plates; the side surfaces of each movable rib plate are fixedly connected to the movable side template, the cross section of the movable side template is arc-shaped, and the curvature corresponds to the second edge; the bottom of the movable lower belt plate is fixed to the movable arc belt plate, and the two ends of the movable arc belt plate are slidably arranged on the slide rails on the base frame, so that the movable side mold can move away from or approach the second edge; the bottom of the movable side template is tightly attached to the outside of the top of the second slat; the movable rib plate is connected to a quick jacking device, and the quick jacking device is fixed to the slide rail to press the movable side template to the second edge; The inner side of the end mold is provided with an end mold plate, the bottom of the hanging mold is provided with a hanging mold plate, and the two ends of the hanging mold plate are mounted on the top surfaces of the two end molds; the hanging mold plate, the end mold plate, the fixed side mold plate, the movable side mold plate, and the bottom mold plate form a casting space; The quick pulling device comprises a U-shaped pulling base, the bottom of which is fixed on the slide rail, a horizontal sleeve is provided at one end of the top, and the other end is hinged to the bottom end of the handle; a sliding rod is passed through the sleeve, one end of the sliding rod is fixedly connected to the movable rib plate, and the other end is hinged to one end of the connecting plate, and the other end of the connecting plate is hinged to the bottom of the handle; A positioning plate is provided inside the top-pull base; A rubber strip groove is formed between the bottom of the movable side template, the side surface of the movable lower belt plate, and the top surface of the movable arc belt plate, and a rubber strip is arranged in the rubber strip groove.

2. The arc-shaped prefabricated plain concrete bench mold according to claim 1 is characterized by: A nut is provided on the side of the movable rib plate, and an external thread corresponding to the nut is provided at the end of the sliding rod.

3. The arc-shaped prefabricated plain concrete bench mold according to claim 1 is characterized by: The bottom mold stiffening rib adjacent to the first slat is a first rib, and the first rib is fixedly connected to the first slat via a plurality of first transverse ribs; the bottom mold stiffening rib adjacent to the second slat is a second rib, and the second rib is fixedly connected to the second slat via a plurality of second transverse ribs.

4. The arc-shaped prefabricated plain concrete bench mold according to claim 3 is characterized by: The lengths of the first transverse ribs and the second transverse ribs are both 50-100 mm, and the spacings between the first transverse ribs and the second transverse ribs are both 200-300 mm.

5. The arc-shaped prefabricated plain concrete bench mold according to claim 3 is characterized by: The base frame is fan-shaped, and the centers of the arcs where the first edge and the second edge are located coincide with each other.

6. A method for installing the arc-shaped prefabricated plain concrete bench mold according to any one of claims 1 to 5, characterized in that: The following steps are involved: A. Chassis forming: The steel structure chassis is welded into a fan-shaped steel structure with channel steel; B. Bottom mold forming: The bottom mold plate and the bottom mold stiffening rib plate are formed by laser blanking. The bottom mold stiffening rib plate is rolled into an arc shape and welded with the bottom mold plate to ensure that the bottom mold stiffening rib plate is perpendicular to the bottom mold plate; the first transverse rib plate and the second transverse rib plate are welded in sections along the bottom mold stiffening rib plate; the rounded ends of the first plate strip and the second plate strip are welded and fixed on the bottom mold plate to ensure that the first plate strip and the second plate strip are perpendicular to the bottom mold plate; C. Fixed side mold forming: The fixed side template, fixed upper strip, fixed lower strip, and fixed arc strip are all formed by laser cutting, among which the fixed arc strip and the fixed upper strip have corresponding holes at the positions with arc length spacing of 400-600mm; the fixed rib plate has corresponding notches reserved at the intersection of the first plate strip and the fixed side template; first spot weld the fixed side template on the first plate strip to ensure that the two are straight and then fully welded; then weld the fixed lower strip and fixed rib plate respectively, and weld the fixed arc strip; align the holes of the fixed arc strip and the fixed upper strip, and connect and fix them with pins and pin plates; D. Movable side mold forming: The movable side mold, movable upper strip plate, movable lower strip plate, movable rib plate and movable arc strip plate are all formed by laser cutting; the movable side mold is rolled according to the predetermined arc, the movable side mold and the movable lower strip plate are welded while ensuring verticality, and then the movable rib plate and the movable upper strip plate are welded; the movable rib plate, movable arc strip plate and movable lower strip plate are welded to form a notch, and a rubber sealing strip is embedded; E. Hanging mold forming: connect and fix the hanging mold with the movable side mold using a hanging plate; F. End mold forming: fix the two end molds at both ends of the bottom mold with pins, and connect them with the fixed side mold and the movable side mold with a quick wrench; G. Installation of the quick jacking and pulling device: Weld and fix the jacking and pulling base of the quick jacking and pulling device to the slide rail of the base frame, and connect the sliding rod with the nut of the movable side mold.

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