Bottom die trolley

Abstract

The utility model provides a bottom die trolley which comprises a trolley frame, the trolley frame comprises an upper platform, a bottom platform and a plurality of supporting legs connected between the upper platform and the bottom platform, the supporting legs are hinged to the upper platform and the bottom platform, the length of each supporting leg can be driven by a linear actuator to change, and the linear actuator is connected with the bottom platform. The upper platform is used for bearing the matching section, the multiple sets of supporting legs are arranged to be hinged to the upper platform and the lower platform, the linear actuators change the length of the supporting legs, adjustment is convenient according to the length change of the linear actuators corresponding to the supporting legs, and the precision is high.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of bridge segment pouring engineering, and particularly relates to a bottom die trolley. BACKGROUND

[0002] At present, most segment bridges are constructed by short-line method, so it is difficult to control the linear shape during assembly. The control quality of the linear shape of the segment prefabrication directly determines the ideal degree of the linear shape of the completed bridge, and further determines the stress of the whole-hole beam and the quality of the completed bridge. Incorrect geometric control can also lead to unevenness of the bridge surface, and the self-weight of the structure is increased by increasing the bridge pavement for adjustment.

[0003] As a key equipment for box girder segment prefabrication, the bottom die trolley is used to adjust the matching beam segment to the preset position, and has a great influence on the segment quality and production efficiency. The existing bottom die trolley is composed of three layers of supports, each layer is provided with a horizontal movement adjusting mechanism, a vertical movement adjusting mechanism and an angle adjusting mechanism, the adjusting mechanisms of each layer are not on the same plane and are independent of each other, so the three-layer structure needs to be adjusted mutually, and the comprehensive adjusting capacity is poor, and it is difficult to accurately position. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model intends to solve the problem of poor comprehensive adjusting capacity of the existing bottom die trolley and difficult accurate positioning.

[0005] A bottom die trolley, characterized by comprising:

[0006] A trolley frame, the trolley frame comprises an upper platform, a bottom platform and a plurality of supporting legs connected between the upper platform and the bottom platform, the supporting legs are hinged to the upper platform and the bottom platform, and the length of the supporting legs can be changed by a linear actuator, wherein the upper platform is used to carry a matching segment.

[0007] The supporting legs are provided with three groups, each group contains two supporting legs, and the distance between the two supporting legs in the same group at the hinge points of the upper platform is not equal to the distance between the two supporting legs at the hinge points of the bottom platform.

[0008] The supporting legs are provided with three groups, the connection points of the three groups of supporting legs and the upper platform form a triangle, and the connection points of the three groups of supporting legs and the bottom platform form a triangle.

[0009] The connection points of the three groups of supporting legs and the bottom platform form an isosceles triangle, the connection points of the three groups of supporting legs and the bottom platform form an isosceles triangle, and

[0010] The apex of the isosceles triangle formed by the connection points of the three groups of legs and the upper platform is located on the center line of the bottom die trolley in the advancing direction, and the other two points of the isosceles triangle are located in front of or behind the apex.

[0011] Similarly, the apex of the isosceles triangle formed by the connection points of the three groups of legs and the bottom platform is located on the center line of the bottom die trolley in the advancing direction, and the other two points of the isosceles triangle are located in front of or behind the apex.

[0012] Further, the bottom platform is connected with a bearing seat on the side, the axial direction of the bearing seat is parallel to the plane where the bottom platform is located, a support frame is rotatably connected on the shaft of the bearing seat, the support frame has a rotating shaft, the axial direction of the rotating shaft is perpendicular to the axial direction of the bearing seat, and the rotating shaft of the support frame is rotatably connected with the leg.

[0013] Further, the side of the upper platform is hingedly connected or hooke-jointedly connected with the leg.

[0014] Further, the driving unit is arranged on the two sides of the bottom platform, and is specifically arranged on the front side and the rear side of the advancing direction of the vehicle frame.

[0015] Further, the bottom of the vehicle frame is further provided with at least three supporting legs, and the top of the supporting leg is provided with a linear actuator.

[0016] The beneficial effects of the utility model are that the application can adjust the length of the leg according to the length change of the linear actuator corresponding to each leg, and the adjustment is convenient and high in precision. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to make the content of the utility model more easily and clearly understood, the utility model will be further described in detail in the light of the specific embodiments of the utility model and in combination with the drawings.

[0018] Figure 1 It is a three-dimensional schematic view of the embodiment 1 of the utility model;

[0019] Figure 2 It is a side view of the embodiment 1 of the utility model;

[0020] In the drawings, the structure represented by each reference numeral is listed as follows:

[0021] 1, upper platform, 2, bottom platform, 3, leg, 4, supporting leg, 5, bearing seat, 6, support frame, DETAILED DESCRIPTION

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0023] Example 1

[0024] like Figures 1-2 As shown, this embodiment is a bottom mold trolley, comprising:

[0025] The frame includes an upper platform 1, a lower platform 2, a plurality of legs 3 connected between the upper platform 1 and the lower platform 2, and a drive unit for moving the trolley. The legs 3 are hinged to the upper platform 1 and the lower platform 2, and the length of the legs 3 can be changed by a linear actuator. The upper platform is used to support the matching section.

[0026] The linear actuator can be a screw jack, which has the advantage of high adjustment precision compared with the hydraulic press used in the existing bottom mold trolley. At the same time, the screw jack can realize the self-locking of the worm gear.

[0027] In this embodiment, the support legs 3 are provided in three groups, each group containing two support legs 3. The distance between the hinge points of the two support legs 3 in the same group on the upper platform is not equal to the distance between their hinge points on the lower platform. In this embodiment, as... Figure 1 As shown, the distance between the hinge points of the two legs 3 in the same group on the upper platform is less than the distance between their hinge points on the lower platform. When the length of one of the two legs 3 in the same group changes, the angle between the upper platform 1 and the horizontal plane can be changed, thereby adjusting the position of the positioning segment.

[0028] In another embodiment, the distance between the hinge points of the two outriggers 3 in the same group on the upper platform is greater than the distance between their hinge points on the lower platform, and the principle and effect are the same.

[0029] The support legs 3 are provided in three sets. The connection points of the three sets of support legs 3 with the upper platform 1 form a triangle, and the connection points of the three sets of support legs 3 with the bottom platform 2 form a triangle.

[0030] The apex of the isosceles triangle formed by the connection points of the three groups of supporting legs 3 and the bottom platform 2 is located on the center line of the bottom die trolley in the advancing direction, and the other two points of the isosceles triangle formed by the connection points of the three groups of supporting legs 3 and the upper platform 1 are located in front of or behind the apex;

[0031] Similarly, the apex of the isosceles triangle formed by the connection points of the three groups of supporting legs and the bottom platform is located on the center line of the bottom die trolley in the advancing direction, and the other two points of the isosceles triangle formed by the connection points of the three groups of supporting legs and the bottom platform are located in front of or behind the apex. The above-mentioned arrangement of isosceles triangle is to make the two sides of the car body symmetrical, so that the two sides of the supporting leg 3 group are symmetrically balanced under pressure, thereby reducing the adjustment difficulty.

[0032] Specifically, the hinge connection between the bottom platform 2 and the supporting leg 3 adopts the following structure, the bottom platform 2 is connected with a bearing seat 5, in this embodiment, the bearing seat 5 is transversely installed on the side surface of the bottom platform 2, the axial direction of the bearing seat 5 is parallel to the plane where the bottom platform 2 is located, a supporting frame 6 is rotatably connected on the shaft of the bearing seat 5, the axial direction of the supporting frame 6 is perpendicular to the axial direction of the first bearing seat 5, and the supporting leg 3 is rotatably connected on the shaft of the supporting frame 6. The connecting joint of the upper platform is located on the side vertical surface of the upper platform.

[0033] Of course, the above-mentioned two-stage rotary connection between the bottom platform 2 and the supporting leg 3 can also not use the bearing seat 5 and the supporting frame 6, in another embodiment, the bottom platform 2 and the supporting leg 3 are connected by a spherical hinge support.

[0034] The side surface of the upper platform 1 is connected with the supporting leg 3 by using a hooke hinge, and can also be connected by using a spherical hinge, which is prior art and will not be described in detail.

[0035] The driving unit is arranged on both sides of the bottom platform, specifically on the front side and the rear side of the advancing direction of the vehicle frame, and similarly, can also be arranged on the left and right sides of the advancing direction of the vehicle frame.

[0036] The vehicle frame further comprises at least three supporting legs 4, and the top of the supporting leg 4 is provided with a linear actuator, in this embodiment, four supporting legs 4 are arranged, in actual operation, the bottom die trolley is moved to a specified position by the driving unit, at this time, the linear actuator extends the supporting leg 4 to support the bottom platform 2, avoiding the car from sliding.

[0037] Obviously, the above embodiments are only examples for clearly illustrating the present application and are not intended to limit the present application. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments are not required to be enumerated. The changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A dragline carriage characterized by, The application relates to a trolley frame, comprising an upper platform (1), a bottom platform (2), a plurality of legs (3) connected between the upper platform (1) and the bottom platform (2), and a driving unit for driving the trolley to move, the legs (3) are hinged to the upper platform (1) and the bottom platform (2), and the length of the legs (3) can be changed by a linear actuator. The legs (3) are provided in three groups, each group comprising two legs (3), and the distance between the two legs (3) in the same group at the hinge points of the upper platform is not equal to the distance between the two legs (3) at the hinge points of the bottom platform.

2. The bed trolley according to claim 1, characterized in that The legs (3) are provided in three groups, and the connection points of the three groups of legs (3) and the upper platform (1) form a triangle, and the connection points of the three groups of legs (3) and the bottom platform (2) form a triangle.

3. The bed trolley of claim 2, wherein, The connection points of the three groups of legs (3) and the bottom platform (2) form an isosceles triangle, the connection points of the three groups of legs (3) and the bottom platform (2) form an isosceles triangle, and 4. The bed trolley of claim 3, wherein, The vertex of the isosceles triangle formed by the connection points of the three groups of legs (3) and the upper platform (1) is located on the center line of the bottom die trolley in the advancing direction, and the other two points of the isosceles triangle are located in front of or behind the vertex. Similarly, the vertex of the isosceles triangle formed by the connection points of the three groups of legs (3) and the bottom platform (2) is located on the center line of the bottom die trolley in the advancing direction, and the other two points of the isosceles triangle are located in front of or behind the vertex. The bottom platform (2) is connected with a bearing seat (5) on the side, the axial direction of the bearing seat (5) is parallel to the plane where the bottom platform (2) is located, a support frame (6) is rotationally connected on the shaft of the bearing seat (5), the support frame (6) is provided with a rotating shaft, and the axial direction of the rotating shaft is perpendicular to the axial direction of the bearing seat (5), and the rotating shaft of the support frame (6) is rotationally connected with the legs (3).

5. The bed trolley as claimed in claim 1, wherein, The side of the upper platform (1) is hingedly connected with the legs (3).

6. The bottom mold trolley of claim 1, wherein, The driving unit is arranged on the two sides of the bottom platform, and is specifically arranged on the front side and the rear side in the advancing direction of the trolley frame.

7. The bottom mold trolley of claim 1, wherein, The bottom of the trolley frame is further provided with at least three supporting legs (4), and the top of the supporting legs (4) is provided with a linear actuator.

8. The bottom mold trolley of claim 1, wherein, ​

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