Front supporting leg
By designing the front leg structure of multi-stage guide column sliding and locking, the problem of limited telescopic function of the existing bridge mounter column is solved, and a larger telescopic stroke and higher construction efficiency are achieved, reducing assembly difficulty and cost.
Patent Information
- Application Number
- CN202422207984.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-09
AI Technical Summary
The column expansion and contraction function of existing bridge mounters is limited by the expansion and contraction of the telescopic hydraulic rod. The column or hydraulic cylinder needs to be replaced to meet the needs of different construction environments, resulting in low versatility and construction efficiency.
A front leg structure is designed, including a walking device, upper beam, guide column, locking member and lifting cylinder. Through the sliding and locking of multi-stage guide columns, a greater telescopic stroke is achieved, avoiding the replacement of columns or hydraulic cylinders, and improving versatility and construction efficiency.
Through the sliding and locking of the multi-stage guide column, a greater telescopic stroke is achieved, the versatility of the front legs and construction efficiency are improved, and assembly difficulty and cost are reduced.
Smart Images
Figure CN223151052U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of telescopic columns of bridge erecting machines, and particularly to a front outrigger. Background Art
[0002] Large equipment such as bridge erecting machines are now required in bridge construction. During the working process of a bridge erecting machine, in order to meet different construction environments, the columns of the bridge erecting machine, also known as outriggers, have telescopic functions. The telescopic function of the columns in the prior art is driven by telescopic hydraulic rods, and the telescopic amount of the columns of the bridge erecting machine is limited by the telescopic amount of the telescopic hydraulic rods, so it is necessary to replace the columns or replace the hydraulic cylinders to meet the usage requirements. Summary of the Utility Model
[0003] In order to solve the above technical problems, this application provides a front outrigger to improve the versatility of the front outrigger.
[0004] To achieve the above object, the embodiments of the present utility model adopt the following technical solutions:
[0005] This application embodiment provides a front outrigger. The front outrigger includes: a traveling device, an upper crossbeam, two first-stage guide columns, a first locking member, a middle crossbeam, a second locking member, a hoisting oil cylinder, two second-stage guide columns, a third locking member, and a lower crossbeam. The traveling device is movably connected to the boom of the bridge erecting machine; the upper crossbeam is arranged on the side of the traveling device away from the boom, and the upper crossbeam has two guide sleeves, and the two guide sleeves are located on opposite sides of the traveling device; the first-stage guide columns are slidably inserted through the sliding holes; the first locking member is used to lock the positions of the first-stage guide columns and the guide sleeves; the middle crossbeam is arranged between the two first-stage guide columns and is slidably connected to the first-stage guide columns; the second locking member is used to lock the positions of the middle crossbeam and the first-stage guide columns; one end of the hoisting oil cylinder is connected to the upper crossbeam, and the other end is connected to the middle crossbeam, and is used to drive the middle crossbeam to move; the first-stage guide columns are sleeved on the second-stage guide columns, and the second-stage guide columns are slidably connected to the first-stage guide columns; the third locking member is used to lock the second-stage guide columns and the first-stage guide columns; the lower crossbeam is located on the side of the second-stage guide columns away from the first-stage guide columns and is connected to the second-stage guide columns.
[0006] According to the front support leg of the embodiment of the present application, by making the primary guide column slide relative to the upper crossbeam, and the middle crossbeam slide relative to the primary guide column, the position of the middle crossbeam on the primary guide column can be locked by the second locking member, so that the lifting cylinder driving the movement of the middle crossbeam can drive the primary guide column to move relative to the upper crossbeam, and then the position of the primary guide column can be locked by the first locking member, and then the movement of the primary guide column can be controlled by the cooperation between the middle crossbeam and the second locking member, which can avoid replacing the column body or the hydraulic cylinder to meet the use requirements, which is conducive to improving the versatility of the front support leg. In addition, by setting the primary guide column to cover the secondary guide column, and making the secondary guide column slide relative to the primary guide column, the secondary guide column and the lower crossbeam connected to the secondary guide column can control the sliding of the secondary guide column by their own weight, and the position of the secondary guide column can be locked by the third locking member, so that the telescopic stroke of the front support leg can be larger, and then the different use requirements of the front support leg can be better met, which is conducive to improving construction efficiency.
[0007] In one possible implementation, the guide sleeve has a first pin hole, and in the height direction of the first guide column, the surface of the first guide column away from the lifting cylinder has a plurality of second pin holes spaced apart, the second pin holes cooperate with the first pin holes, and the first locking piece passes through the first pin hole and the second pin hole.
[0008] In one possible implementation, in the moving direction of the walking device, the surface of the first-level guide column has a plurality of third pin holes, the plurality of third pin holes are spaced apart in the height direction of the first-level guide column, the middle cross beam has a fourth pin hole matching the third pin hole, and the second locking piece passes through the third pin hole and the fourth pin hole.
[0009] In one possible implementation, the surface of the first-level guide column facing the lifting cylinder has a plurality of fifth pin holes, and the surface of the second-level guide column facing the lifting cylinder has a plurality of sixth pin holes, the fifth pin holes are directly opposite to the sixth pin holes, the plurality of fifth pin holes and the plurality of sixth pin holes are spaced apart in the height direction of the first-level guide column, and the third locking piece passes through the fifth pin hole and the sixth pin hole.
[0010] In a possible implementation, the front support leg further includes a reinforcing rod, which is disposed between the two primary guide columns and passes through a fifth pin hole.
[0011] In one possible implementation, the front support leg also includes a walking mechanism and a driving mechanism. The walking device has a walking space. The walking mechanism and the driving mechanism are arranged in the walking space and are arranged at intervals in the extension direction of the walking space. The machine arm passes through the walking space, and the walking mechanism and the driving mechanism are both connected to the machine arm in a transmission manner.
[0012] In a possible implementation, the traveling mechanism includes a base, planetary rollers, and a bearing plate. The base is disposed in the traveling space, the bearing plate is disposed on the base, and a plurality of planetary rollers are equidistantly arranged around the bearing plate. The planetary rollers are drivingly connected to the machine arm. The driving mechanism includes a driving motor and a driving gear. The driving motor drives the driving gear to rotate, and the driving gear is drivingly connected to the machine arm.
[0013] In a possible implementation, the front leg further includes a hanger wheel, and the hanger wheel is disposed on the side wall of the traveling space.
[0014] In a possible implementation, the front leg further includes a guide wheel and a supporting wheel. The guide wheel is disposed on the outer side wall of the traveling device, the supporting wheel is disposed on the bottom wall of the traveling space, and the guide wheel and the supporting wheel are in contact with the machine arm.
[0015] In some embodiments, the front leg further includes two transverse moving oil cylinders. The cylinder body of the transverse moving oil cylinder is connected to the traveling device, and the piston rods at both ends of the transverse moving oil cylinder are connected to the upper cross beam. When the piston rods of the two transverse moving oil cylinders extend or retract simultaneously, the traveling device and the machine arm are driven to move along the extending direction of the upper cross beam. When the piston rod of one transverse moving oil cylinder extends and the piston rod of the other transverse moving oil cylinder retracts, the traveling device and the machine arm are driven to rotate relative to the upper cross beam.
[0016] In a possible implementation, the front leg further includes a support rod for the through hole, and the first-level guide post is connected to the lifting hole of the beam through the support rod for the through hole. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The accompanying drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present application and, together with the specification, are used to explain the principles of the present application.
[0018] To more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the following will briefly introduce the drawings required for use in the description of the embodiments or the related art. Obviously, for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0019] Figure 1 Schematic diagram of the connection between the front leg and the machine arm provided by some embodiments of the present application;
[0020] Figure 2 Schematic diagram of the front leg provided by some embodiments of the present application;
[0021] Figure 3 Partial schematic diagram of the front leg provided by some embodiments of the present application;
[0022] Figure 4 Partial schematic diagram of the front leg provided by other embodiments of the present application;
[0023] Figure 5 Schematic diagram of the connection between the front outrigger and the beam for some embodiments of the present application;
[0024] Figure 6 Schematic diagram of the front outrigger for other embodiments of the present application.
[0025] Reference numerals:
[0026] 100, front outrigger; 200, machine arm; 300, beam;
[0027] 1, traveling device; 11, traveling space; 111, first bracket; 112, second bracket; 113, connecting beam; 12, traveling mechanism; 121, base; 122, planetary roller; 123, bearing plate; 13, driving mechanism; 131, driving motor; 132, driving gear; 14, hanger wheel; 15, guide wheel; 16, supporting wheel; 17, transverse shift cylinder; 171, first piston rod; 172, second piston rod; 18, machine arm positioning pin;
[0028] 2, upper cross beam; 21, sliding hole; 22, first pin hole; 23, first locking member; 24, guide sleeve;
[0029] 3, first-stage guide post; 31, second pin hole; 32, third pin hole; 33, fifth pin hole;
[0030] 4, middle cross beam; 41, second locking member; 42, fourth pin hole;
[0031] 5, lifting cylinder;
[0032] 6, second-stage guide post; 61, third locking member; 62, sixth pin hole;
[0033] 7, lower cross beam;
[0034] 8, strengthening rod;
[0035] 9, support rod for through hole. Detailed implementation manners
[0036] In order to more clearly understand the above-mentioned objects, features and advantages of the present application, the solutions of the present application will be further described below. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.
[0037] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present utility model.
[0038] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, "connected" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed connection" means that they are connected to each other and the relative positional relationship after connection remains unchanged. In addition, the orientation terms mentioned in the embodiments of the present application, such as "inner", "outer", etc., are only with reference to the direction of the drawings. Therefore, the orientation terms used are for better and clearer description and understanding of the embodiments of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the embodiments of the present application.
[0039] In the description of the embodiments of the present application, the term "comprising", "including" or any other variant thereof is intended to cover a non-exclusive inclusion, such that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the presence of additional identical elements in the process, method, article or device including that element. Without further limitation, an element defined by the statement "including one..." does not exclude the presence of additional identical elements in the process, method, article or device including that element.
[0040] Please refer to Figure 1 and Figure 2 , Figure 1 which is a schematic diagram of the connection between the front leg and the machine arm provided by some embodiments of the present application, Figure 2 which is a schematic diagram of the front leg provided by some embodiments of the present application. The embodiments of the present application provide a front leg 100. The front leg 100 includes a traveling device 1, an upper cross beam 2, two first-level guide columns 3, a first locking member 23, a middle cross beam 4, a second locking member 41, a lifting oil cylinder 5, two second-level guide columns 6, a third locking member 61, and a lower cross beam 7.
[0041] The traveling device 1 is movably connected to the boom 200 of the bridge erecting machine. Specifically, the traveling device 1 is connected to the boom 200 of the bridge erecting machine and can move along the extending direction of the boom 200 and drive the boom 200 to move.
[0042] The upper crossbeam 2 can be arranged on the side of the traveling device 1 away from the boom 200. Specifically, as Figure 2 shown, the upper crossbeam 2 is located at the bottom of the traveling device 1. When the traveling device 1 moves relative to the boom 200, it can drive the upper crossbeam 2 to move together.
[0043] The upper crossbeam 2 can have two guide sleeves 24. The guide sleeve 24 can have a sliding hole 21. The two guide sleeves 24 can be located on the opposite sides of the traveling device 1. Specifically, the sliding hole 21 is arranged on the upper surface of the guide sleeve 24, and in the height direction of the upper crossbeam 2, the sliding hole 21 can penetrate through the guide sleeve 24.
[0044] The first-stage guide post 3 is slidably inserted through the guide sleeve 24, that is, the first-stage guide post 3 is slidably inserted through the sliding hole 21. Specifically, the two first-stage guide posts 3 are arranged in parallel. The first-stage guide post 3 is inserted through the sliding hole 21 and can slide relative to the upper crossbeam 2, and thus can move from one side of the sliding hole 21 to the other side.
[0045] The first locking member 23 can be used to lock the position of the first-stage guide post 3 and the upper crossbeam 2. Since the first-stage guide post 3 can slide relative to the upper crossbeam 2, the movement of the first-stage guide post 3 after moving to the specified position can be restricted by the first locking member 23.
[0046] The middle crossbeam 4 is arranged between the two first-stage guide posts 3 and is slidably connected to the first-stage guide posts 3. Specifically, one end of the middle crossbeam 4 is connected to one first-stage guide post 3, and the other end is connected to the other first-stage guide post 3. The middle crossbeam 4 can slide relative to the first-stage guide posts 3, and the sliding direction is the extending direction of the first-stage guide posts 3.
[0047] The second locking member 41 can be used to lock the position of the middle crossbeam 4 and the first-stage guide posts 3. Specifically, the movement of the middle crossbeam 4 relative to the first-stage guide posts 3 can be restricted by the second locking member 41.
[0048] One end of the lifting oil cylinder 5 can be connected to the upper crossbeam 2, and the other end can be connected to the middle crossbeam 4, and it can be used to drive the middle crossbeam 4 to move. Specifically, the cylinder block of the lifting oil cylinder 5 can be connected to the upper crossbeam 2, and the piston rod of the lifting oil cylinder 5 can be connected to the middle crossbeam 4, so that the middle crossbeam 4 can be driven to move by the lifting oil cylinder 5. Among them, when the second locking member 41 locks the middle crossbeam 4 and the first-stage guide posts 3, the lifting oil cylinder 5 can drive the middle crossbeam 4 to move, and the middle crossbeam 4 can then drive the first-stage guide posts 3 to move.
[0049] Exemplarily, the number of the lifting cylinders 5 can be multiple. Herein, "multiple" means that the number of the lifting cylinders 5 is two or more than two.
[0050] A first-stage guide post 3 is sleeved on a second-stage guide post 6. The second-stage guide post 6 is slidably connected to the first-stage guide post 3. Specifically, the first-stage guide post 3 can have a receiving space, and an opening is provided on a side of the receiving space away from the traveling device 1. The second-stage guide post 6 penetrates through the opening. The sliding direction of the second-stage guide post 6 can be the extending direction of the first-stage guide post 3.
[0051] A third locking member 61 is used to lock the second-stage guide post 6 and the first-stage guide post 3. Specifically, the movement of the second-stage guide post 6 can be limited by the third locking member 61.
[0052] The lower cross beam 7 is located on a side of the second-stage guide post 6 away from the first-stage guide post 3 and is connected to the second-stage guide post 6. Specifically, the orthographic projection of the second-stage guide post 6 on the plane where the lower cross beam 7 is located is within the lower cross beam 7. When the third locking member 61 releases the locking between the second-stage guide post 6 and the first-stage guide post 3, the second-stage guide post 6 and the lower cross beam 7 can control the sliding of the second-stage guide post 6 by their own weights.
[0053] For the front outrigger 100 according to the embodiment of the present application, by sliding the first-stage guide post 3 relative to the upper cross beam 2 and sliding the middle cross beam 4 relative to the first-stage guide post 3, the position of the middle cross beam 4 on the first-stage guide post 3 can be locked by the second locking member 41, so that the lifting cylinder 5 driving the middle cross beam 4 to move can drive the first-stage guide post 3 to move relative to the upper cross beam 2, and then the position of the first-stage guide post 3 is locked by the first locking member 23. Furthermore, the movement of the first-stage guide post 3 can be controlled through the cooperation between the middle cross beam 4 and the second locking member 41, which can avoid replacing the column body or the hydraulic cylinder to meet the use requirements and is beneficial to improving the versatility of the front outrigger 100. In addition, by arranging the first-stage guide post 3 to sleeve the second-stage guide post 6 and enabling the second-stage guide post 6 to slide relative to the first-stage guide post 3, the second-stage guide post 6 and the lower cross beam 7 connected to the second-stage guide post 6 can control the sliding of the second-stage guide post 6 by their own weights, and the position of the second-stage guide post 6 can be locked by the third locking member 61, so that the telescopic stroke of the front outrigger 100 can be larger, and further different use requirements of the front outrigger 100 can be better met, which is beneficial to improving the construction efficiency.
[0054] Please continue to refer to Figure 1 and Figure 2, in some embodiments, the guide sleeve 24 may have a first pin hole 22. On the height direction of the first-stage guide post 3, the surface of the first-stage guide post 3 facing away from the lifting oil cylinder 5 may have a plurality of second pin holes 31 arranged at intervals. The second pin holes 31 may cooperate with the first pin hole 22. The first locking member 23 passes through the first pin hole 22 and the second pin hole 31. Specifically, the surfaces of one first-stage guide post 3 facing away from another first-stage guide post 3 both have second pin holes 31, and the plurality of second pin holes 31 are arranged at intervals in the height direction of the first-stage guide post 3. Among them, the first locking member 23 may be a pin. Thus, the position of the first-stage guide post 3 can be locked through the cooperation of the first locking member 23 with the first pin hole 22 and the second pin hole 31, with a simple structure, which is beneficial to reducing the cost of the front outrigger 100 and also reducing the assembly difficulty, thereby being beneficial to improving work efficiency.
[0055] Exemplarily, there may be multiple columns of the second pin holes 31 on the first-stage guide post 3. Such a setting is beneficial to improving the stability and reliability of position locking.
[0056] Please continue to refer to Figure 1 and Figure 2 , in some embodiments, on the moving direction of the traveling device 1, the surface of the first-stage guide post 3 may have a plurality of third pin holes 32. The plurality of third pin holes 32 may be arranged at intervals in the height direction of the first-stage guide post 3. The middle cross beam 4 may have fourth pin holes 42 that cooperate with the third pin holes 32. The second locking member 41 may pass through the third pin holes 32 and the fourth pin holes 42. Specifically, the fourth pin holes 42 are provided at the positions of the middle cross beam 4 opposite to the two first-stage guide posts 3. When it is necessary to lock the position of the middle cross beam 4, the second locking member 41 can be inserted into the third pin holes 32 and the fourth pin holes 42. Thus, the structure is simple, which is beneficial to reducing the cost of the front outrigger 100 and also reducing the assembly difficulty, thereby being beneficial to improving work efficiency. In addition, the third pin holes 32 and the second pin holes 31 are located on different surfaces of the first-stage guide post 3, so interference can be avoided.
[0057] Please continue to refer to Figure 1 and Figure 2, in some embodiments, the surface of the first guide post 3 facing the lifting oil cylinder 5 may have a fifth pin hole 33. The surface of the second guide post 6 facing the lifting oil cylinder 5 may have a plurality of sixth pin holes 62, and the fifth pin hole 33 is aligned with the sixth pin holes 62. The plurality of fifth pin holes 33 and the plurality of sixth pin holes 62 are both spaced apart in the height direction of the first guide post 3. The third locking member 61 can pass through the fifth pin hole 33 and the sixth pin holes 62. Specifically, the opposite surfaces of the two first guide posts 3 have the fifth pin holes 33, and the opposite surfaces of the two second guide posts 6 have the sixth pin holes 62. When the fifth pin hole 33 cooperates with the sixth pin holes 62, the orthographic projection of the fifth pin hole 33 on the plane where the sixth pin holes 62 are located coincides with the sixth pin holes 62. Thus, the structure is simple, which is beneficial to reducing the cost of the front outrigger 100 and also reducing the assembly difficulty, thereby facilitating the improvement of work efficiency. In addition, the fourth pin hole 42, the third pin hole 32 and the second pin hole 31 are located on different surfaces of the first guide post 3, so that interference can be avoided and assembly is also facilitated.
[0058] Exemplarily, the fifth pin hole 33 may have multiple columns. The sixth pin holes 62 may also have multiple columns. Such a setting can improve the connection stability and reliability between the second guide post 6 and the first guide post 3. It should be noted that the second guide post 6 may also be provided with pin holes that cooperate with the guide sleeve 24 and the middle cross beam 4.
[0059] Please continue to refer to Figure 1 and Figure 2 , in some embodiments, the front outrigger 100 may further include a reinforcing rod 8. The reinforcing rod 8 is disposed between the two first guide posts 3 and passes through the fifth pin hole 33. Specifically, one end of the reinforcing rod 8 passes through the fifth pin hole 33 of one first guide post 3, and the other end passes through the fifth pin hole 33 of the other first guide post 3. Thus, it is beneficial to improve the structural strength of the front outrigger 100.
[0060] Exemplarily, when the second guide post 6 slides relative to the first guide post 3, in the height direction of the first guide post 3, the reinforcing rod 8 may be disposed at the middle position of the total height, where the total height refers to the height of the first guide post 3 plus the height of the extended second guide post 6. Thus, it is beneficial to better ensure the structural strength of the front outrigger 100 during use.
[0061] Please refer to Figure 3 and Figure 4 , Figure 3 is a partial schematic view of the front outrigger provided in some embodiments of the present application, Figure 4A partial schematic view of the front outrigger provided for other embodiments of the present application. In some embodiments, the traveling device 1 includes a support, and a traveling space 11 may be provided inside the support. The traveling mechanism 12 and the driving mechanism 13 may be disposed in the traveling space 11 and are spaced apart in the extending direction of the traveling space 11. The boom 200 passes through the traveling space 11. The traveling mechanism 12 and the driving mechanism 13 are in transmission connection with the boom 200. Specifically, the traveling space 11 cooperates with the boom 200, and the bottom of the boom 200 contacts the traveling mechanism 12 and the driving mechanism 13, so that the traveling device 1 can slide relative to the boom 200 and drive the boom 200 to slide.
[0062] By providing the traveling mechanism 12 and the driving mechanism 13, the traveling device 1 can slide more stably relative to the boom 200 and the boom 200 can slide more stably, which is beneficial to improving the stability and reliability of the front outrigger 100.
[0063] Please continue to refer to Figure 3 and Figure 4 In some embodiments, the traveling mechanism 12 may include a base 121, planetary rollers 122, and a carrier plate 123. The base 121 is mounted on the bracket and may be disposed in the traveling space 11. The carrier plate 123 is disposed on the base 121. A plurality of planetary rollers 122 may be equally spaced around the carrier plate 123. Thus, the traveling mechanism 12 can support the boom 200 through a plurality of planetary rollers, so that the boom 200 slides more stably on the planetary rollers 122, and the support can be more uniform and stable, which is beneficial to improving the stability of the operation of the front outrigger 100.
[0064] The driving mechanism 13 may include a driving motor 131 and a driving gear 132. The driving motor 131 can drive the driving gear 132 to rotate. Specifically, a rack that cooperates with the driving gear 132 may be provided on the boom 200. By driving the driving gear 132 to rotate by the driving motor 131 and the meshing of the driving gear 132 and the rack, the traveling device 1 can slide relative to the boom 200. Such a setting has a simple structure.
[0065] Please continue to refer to Figure 3 and Figure 4 In some embodiments, the front outrigger 100 further includes a hanger wheel 14. The hanger wheel 14 may be disposed on the side wall of the traveling space 11. Specifically, hanger wheels 14 may be provided on both opposite side walls of the traveling space 11. The hanger wheel 14 can cooperate with the boom 200, thereby ensuring the stability and reliability of the sliding of the front outrigger 100.
[0066] Please continue to refer to Figure 3 and Figure 4, in some embodiments, the front outrigger 100 may further include a guide wheel 15 and a supporting wheel 16. The guide wheel 15 may be provided on the outer side wall of the traveling device 1. The supporting wheel 16 may be provided on the bottom wall of the traveling space 11. The guide wheel 15 and the supporting wheel 16 are in contact with the boom 200. By providing the guide wheel 15, route guidance can be carried out to prevent deviation and sliding. By providing the supporting wheel 16, the stability and adaptability of the sliding of the front outrigger 100 can be ensured.
[0067] Exemplarily, guide wheels 15 may also be provided in the traveling space 11. A plurality of guide wheels 15 may be arranged at intervals along the extending direction of the boom 200 and are provided on opposite sides of the boom 200.
[0068] Please refer to Figures 1-4 , when the front outrigger 100 moves back and forth, the planetary roller 122 of the traveling mechanism 12 and the supporting wheel 16 can support the boom 200, the guide wheel 15 can play a guiding role, the hanging wheel 14 cooperates with the chute on the boom 200, and a rack cooperating with the driving gear 132 is provided on the boom 200. The boom 200 can be driven to move forward and drive the front outrigger 100 to move forward by itself through the driving motor 131.
[0069] Please continue to refer to Figure 3 and Figure 4 , in some embodiments, the front outrigger 100 may further include two transverse movement cylinders 17. The transverse movement cylinders 17 are connected to the traveling device 1. In this embodiment, the transverse movement cylinders 17 are double-rod cylinders, which include a cylinder body and two piston rods in the cylinder body. The two piston rods are specifically a first piston rod 171 and a second piston rod 172, and both the first piston rod 171 and the second piston rod 172 are connected to the upper cross beam 2.
[0070] The above two transverse movement cylinders 17 are located on the front and rear sides of the traveling device 1 (i.e., on both sides along the extending direction of the boom). When the lower cross beam 7 lands on the pier, by simultaneously extending or retracting the two transverse movement cylinders 17, the traveling device 1 and the boom 200 can be driven to move along the extending direction of the upper cross beam 2, and thus the transverse movement of the boom 200 can be realized. When the lower cross beam 7 does not land on the pier, the traveling device 1 and the boom 200 can rotate relative to the upper cross beam 2. Specifically, since there is a gap between the traveling device 1 and the upper cross beam 2, when one of the transverse movement cylinders 17 extends and the other transverse movement cylinder 17 retracts, the traveling device 1 and the boom 200 can be driven to rotate relative to the upper cross beam 2, so that the traveling device 1 and the boom 200 can rotate by a small angle, such as 1°, 2°, etc., which can meet the needs when erecting curves and is beneficial to improving the versatility of the front outrigger 100.
[0071] Please continue to refer to Figure 3 and Figure 4, in some embodiments, the above-mentioned support includes a first bracket 111, a second bracket 112 and a connecting beam 113. The first bracket 111 and the second bracket 112 can be connected by the connecting beam 113. Mounting seats are provided on both sides of the first bracket 111, and two transverse movement cylinders 17 are respectively arranged on one mounting seat. Exemplarily, the number of the connecting beams 113 can be multiple. The first bracket 111 and the second bracket 112 are arranged at intervals, and the first bracket 111 and the second bracket 112 can form an "L" shape. One end of the connecting beam 113 is connected to the first bracket 111, and the other end is connected to the second bracket 112. One transverse movement cylinder 17 can be arranged on the mounting seat on the side of the first bracket 111 away from the second bracket 112, and the other transverse movement cylinder 17 can be arranged on the mounting seat on the side of the first bracket 111 close to the second bracket 112. Among them, the driving mechanism 13 can be located between the first bracket 111 and the second bracket 112. The transverse movement cylinder 17 and the first bracket 111 can be detachably connected.
[0072] Please refer to Figure 5 , Figure 5 is a schematic diagram of the connection between the front leg and the beam provided by some embodiments of the present application. In some embodiments, the front leg 100 may further include a through-hole support rod 9. The first-stage guide post 3 can be connected to the lifting hole of the beam 300 through the through-hole support rod 9. Optionally, the above-mentioned through-hole support rod 9 can be provided with two. One end of the two through-hole support rods 9 can be detachably connected to the first-stage guide post 3, and the other end can be connected to the lifting hole of the beam 300 through a fastener to realize further stable support for the front leg.
[0073] Please refer to Figure 6 , Figure 6 is a schematic diagram of the front leg provided by some other embodiments of the present application. Exemplarily, an arm positioning pin 18 can be provided on the traveling device 1. One end of the arm positioning pin 18 can be connected to the traveling device 1, and there is a gap between the other end and the upper cross beam 2. It can abut against the upper cross beam 2, and the traveling device 1 can move relative to the upper cross beam 2. Among them, the other end of the arm positioning pin 18 can extend towards the direction close to the upper cross beam 2 and abut against the upper cross beam 2, so that the arm positioning pin 18 can hook the upper cross beam 2.
[0074] Specifically, when the piston rods of the two transverse movement cylinders 17 extend or retract simultaneously, the arm positioning pin 18 can hook the upper cross beam 2, and the traveling device 1 can slide relative to the upper cross beam 2, then the transverse movement of the arm 200 can be realized. Since there is a gap between the arm positioning pin 18 and the upper cross beam 2, when one of the transverse movement cylinders 17 extends and the other transverse movement cylinder 17 retracts, the rotation of the traveling device 1 and the arm 200 can be realized. The gap between the arm positioning pin 18 and the upper cross beam 2 enables the front leg 100 to rotate by a small angle.
[0075] Thus, the assembly speed of the front outrigger 100 can be increased, and at the same time, it is also beneficial to improve the reliability of the front outrigger 100.
[0076] In the description of this specification, the specific features, structures, materials, or characteristics may be combined in any one or more embodiments or examples in a suitable manner.
[0077] As described above, it is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the said claims.
Claims
1. A front outrigger, applied to a bridge erecting machine, is characterized in that, The front outrigger includes: A traveling device, which is movably connected to the boom of the girder erecting machine; An upper cross beam, which is arranged on the side of the traveling device away from the boom, and the upper cross beam has two guide sleeves, and the two guide sleeves are located on opposite sides of the traveling device; Two first-stage guide columns, which are slidably inserted through the guide sleeves; A first locking member, which is used to lock the positions of the first-stage guide column and the guide sleeve; A middle cross beam, which is arranged between the two first-stage guide columns and is slidably connected to the first-stage guide columns; A second locking member, which is used to lock the positions of the middle cross beam and the first-stage guide columns; A hoisting oil cylinder, one end of which is connected to the upper cross beam and the other end is connected to the middle cross beam, and is used to drive the middle cross beam to move; Two second-stage guide columns, the first-stage guide columns are sleeved on the second-stage guide columns, and the second-stage guide columns are slidably connected to the first-stage guide columns; A third locking member, which is used to lock the second-stage guide column and the first-stage guide column; A lower cross beam, which is located on the side of the second-stage guide column away from the first-stage guide column and is connected to the second-stage guide column.
2. The front outrigger according to claim 1, characterized in that, The guide sleeve has a first pin hole. In the height direction of the first-stage guide column, the surface of the first-stage guide column facing away from the hoisting oil cylinder has a plurality of second pin holes arranged at intervals, and the second pin holes cooperate with the first pin hole, and the first locking member passes through the first pin hole and the second pin hole.
3. The front outrigger according to claim 1, characterized in that, The surface of the first-stage guide column has a plurality of third pin holes, and the plurality of third pin holes are arranged at intervals in the height direction of the first-stage guide column. The middle cross beam has a fourth pin hole that cooperates with the third pin hole, and the second locking member passes through the third pin hole and the fourth pin hole.
4. The front outrigger according to claim 1, characterized in that, The surface of the first-stage guide column facing the hoisting oil cylinder has a plurality of fifth pin holes, and the surface of the second-stage guide column facing the hoisting oil cylinder has a plurality of sixth pin holes, and the fifth pin holes are aligned with the sixth pin holes. The plurality of fifth pin holes and the plurality of sixth pin holes are both arranged at intervals in the height direction of the first-stage guide column, and the third locking member passes through the fifth pin hole and the sixth pin hole.
5. The front outrigger according to claim 4, wherein The front outrigger further includes a reinforcing rod, which is arranged between the two first-stage guide columns and passes through the fifth pin hole.
6. The front outrigger according to claim 1, wherein The front outrigger further includes a traveling mechanism and a driving mechanism. The traveling device has a traveling space, and the traveling mechanism and the driving mechanism are arranged in the traveling space and are spaced apart in the extending direction of the traveling space. The boom passes through the traveling space, and both the traveling mechanism and the driving mechanism are in transmission connection with the boom.
7. The front outrigger according to claim 6, wherein The traveling mechanism includes a base, planetary rollers and a bearing plate. The base is arranged in the traveling space, the bearing plate is arranged on the base, and a plurality of the planetary rollers surround the bearing plate at equal intervals, and the planetary rollers are in transmission connection with the boom; the driving mechanism includes a driving motor and a driving gear, the driving motor drives the driving gear to rotate, and the driving gear is in transmission connection with the boom.
8. The front outrigger according to claim 6, characterized in that, The front outrigger further includes a guide wheel and a supporting wheel. The guide wheel is disposed on the outer sidewall of the traveling device, the supporting wheel is disposed on the bottom wall of the traveling space, and the guide wheel and the supporting wheel are in contact with the machine arm.
9. The front outrigger according to claim 1, characterized in that, The front outrigger further includes two transverse movement oil cylinders. The cylinder body of the transverse movement oil cylinder is connected to the traveling device, and the piston rods at both ends of the transverse movement oil cylinder are connected to the upper cross beam. Wherein, when the piston rods of the two transverse movement oil cylinders extend or retract simultaneously, the traveling device and the machine arm are driven to move along the extending direction of the upper cross beam; when the piston rod of one transverse movement oil cylinder extends and the piston rod of the other transverse movement oil cylinder retracts, the traveling device and the machine arm are driven to rotate relative to the upper cross beam.
10. The front outrigger according to claim 1, characterized in that, The front outrigger further includes a support rod for through holes. The first-stage guide post is connected to the lifting hole of the beam slab through the support rod for through holes.