Front supporting leg structure

Abstract

The utility model discloses a front supporting leg structure which comprises a front supporting leg transverse beam, supporting seats are installed above the left portion and the right portion of the front supporting leg transverse beam respectively, reaction wheel installation seats are fixed to the left portion and the right portion of the bottom face of each supporting seat respectively, and balance beams are movably connected to the reaction wheel installation seats through hinge shafts. The front portion and the rear portion of the balance beam are each provided with a reverse rolling wheel set. The left side and the right side of a supporting seat are each provided with two reverse rolling wheel sets, the reverse rolling wheel sets are installed on a main beam, so that the stress dispersion effect on the main beam is better, the stress of the main beam is more uniform, and a first worm turbine rotation drive is fixed to the bottom of a vertical adjusting column. Automatic rotation of the first vertical lifting adjusting stud can be achieved through rotation driving of the first worm and the worm gear, automatic lifting of the supporting leg is achieved, manual operation is not needed, the operation difficulty is greatly reduced, and the manual labor amount is greatly reduced.

Description

Technical field:

[0001] The utility model relates to the technical field of bridge erection machines, and more particularly to a front support leg structure. Background technology:

[0002] Among the existing pile-beam integrated machines, such as a pile-beam integrated equipment with Chinese patent application number 202310218126.5, it integrates the lifting functions of piers, cap beams, and beam slabs and the driving of prefabricated pipe piles; at the same time, it does not require the laying of walkways, piers, or the use of large ship machinery and equipment, and can complete the horizontal transportation, feeding, driving, connecting, and cutting of prefabricated piles, thereby changing the existing on-site casting situation of cap beams and protecting the surrounding geographical and ecological environment.

[0003] It generally includes front legs, rear legs, main beams, and piling devices. The front legs generally include front leg transverse beams. Support seats are installed on the left and right parts above the front leg transverse beams, and a reverse roller group is directly installed on the left and right sides of the support seats. Its supporting and balancing effect is limited.

[0004] At the same time, the bottom surface of the horizontal beam of the front support leg generally needs to be installed with a lifting support leg, and the existing lifting support leg is generally a single vertical column-shaped support leg for lifting, and its supporting force balancing effect is limited. In addition, the bottom of the support leg is generally directly screwed with an adjusting stud, and the bottom of the adjusting stud is installed with a supporting foot. The supporting foot is fine-tuned by manually turning the adjusting stud, so that the supporting foot is pressed down to the top surface of the pile column below to achieve support. However, manual adjustment is cumbersome and inefficient. Utility model content:

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a front support leg structure, in which two reverse roller groups are installed on the left and right sides of its support seat, which are installed on the main beam, so that the force dispersion effect on the main beam is better and the force on the main beam is more uniform. In addition, a first worm gear rotary drive is fixed to the bottom of its vertical adjustment column. The first worm gear rotary drive can realize the automatic rotation of the first vertical lifting adjustment stud and the automatic lifting of the support leg without manual operation, which greatly reduces the difficulty of operation and the amount of manual labor.

[0006] The solution of the utility model to solve the technical problem is:

[0007] A front leg structure includes a front leg transverse beam, support seats are installed above the left and right parts of the front leg transverse beam, and anti-roller mounting seats are fixed to the left and right parts of the bottom surface of the support seats. The anti-roller mounting seats are movably connected to the balance beam via a hinge shaft, and anti-roller groups are installed on the front and rear parts of the balance beam;

[0008] The bottom surface of the middle part of the front support leg transverse beam, the bottom surface of the left side of the middle part and the bottom surface of the right side of the middle part are all fixed with a lower support seat, and a connecting beam extending front and rear is fixed to the bottom surface of the lower support seat, and the middle parts of the front and rear of the connecting beam are formed with vertical adjustment slots, and the front and rear two vertical adjustment columns are inserted into the corresponding vertical adjustment slots and cooperate with the vertical adjustment slots, and positioning through holes are formed on the left and right side walls of the vertical adjustment slot, and a plurality of connecting through holes extending left and right and arranged up and down are formed on the vertical adjustment column, and the connecting through holes of the part of the vertical adjustment column in the vertical adjustment slot are connected and fixed with the corresponding two positioning through holes by positioning pins;

[0009] The bottom of the vertical adjustment column is fixed with a first worm gear rotary drive, the bottom of the first vertical lifting adjustment stud of the first worm gear rotary drive extends out of the bottom end of the first worm gear rotary drive and is fixed with a supporting foot, and the bottom surfaces of the two corresponding front and rear supporting feet are fixed with the same first connecting support beam extending front and back.

[0010] The connecting beam has a slot in the middle, the upper connecting seat of the lifting cylinder is located in the slot, the middle of the upper connecting seat of the lifting cylinder is formed with through holes extending left and right, the connecting shaft is clamped in the through hole of the upper connecting seat of the lifting cylinder and the side through holes inserted into the left and right side walls of the slot, and the upper connecting seat of the lifting cylinder is movably connected to the connecting beam through the connecting shaft;

[0011] The bottom end of the push rod of the lifting cylinder is movably connected to the lifting beam extending front and back through a hinge shaft. The front and rear of the lifting beam are formed with lower vertical through grooves. The lower part of the vertical adjustment column is inserted into the corresponding lower vertical through groove and cooperates with the lower vertical through groove. The bottom of the vertical adjustment column extends out of the bottom end of the corresponding lower vertical through groove.

[0012] Side connecting through holes are formed on the left and right side walls of the lower vertical through slot. The connecting through hole of the vertical adjustment column in the lower vertical through slot is connected and fixed to the corresponding two side connecting through holes through positioning pins.

[0013] The outstanding effects of the utility model are:

[0014] Compared with the existing technology, its support seat is equipped with anti-roller mounting seats on the top surfaces of the left and right sides, and the anti-roller mounting seats are movably connected to the balance beam through a hinged shaft. The front and rear of the balance beam are equipped with anti-roller groups. The balance beam and the corresponding two anti-roller groups on it are installed on the main beam, so that the force dispersion effect on the main beam is better and the force on the main beam is more uniform. In addition, the bottom of the vertical adjustment column is fixed with a first worm gear rotary drive. The first worm gear rotary drive can realize the automatic rotation of the first vertical lifting adjustment stud and the automatic lifting of the support foot without manual operation, which greatly reduces the difficulty of operation and the amount of manual labor. Description of the drawings:

[0015] Figure 1 It is a partial structural diagram of the utility model;

[0016] Figure 2 yes Figure 1 A partial enlarged view of

[0017] Figure 3 yes Figure 1 a partial enlarged view of another part;

[0018] Figure 4 yes Figure 1 There is also a partial enlarged view of a part;

[0019] Figure 5 It is a schematic diagram of the partial structure of the utility model in a side view;

[0020] Figure 6 yes Figure 5 A partial enlarged view of

[0021] Figure 7 yes Figure 5 A partial enlarged view of another part. Specific implementation method:

[0022] For example, see Figures 1 to 7 As shown, a front support leg structure includes a front support leg transverse beam 10, and support seats 20 are installed above the left and right parts of the front support leg transverse beam 10. The left and right parts of the bottom surface of the support seat 20 are fixed with anti-roller mounting seats 21. The anti-roller mounting seat 21 is movably connected to the balance beam 22 through a hinge shaft. The front and rear parts of the balance beam 22 are installed with anti-roller groups 23. The anti-roller group 23 used in this embodiment adopts a anti-roller device of a main support leg of a bridge erection machine with Chinese patent application number 202022543708.5, so it is not described in detail.

[0023] In this embodiment, since one side of each support seat 20 is pressed against the top surface of the corresponding support part of the main beam through the upper rotating wheels of the two anti-roller groups 23 arranged on the balance beam 22, the force on the support part of the main beam is evenly dispersed, thereby improving the stability of operation.

[0024] Furthermore, a lower support seat 11 is fixed to the bottom surface of the middle part, the bottom surface of the left side of the middle part, and the bottom surface of the right side of the middle part of the front leg transverse beam 10, and a connecting beam 12 extending front and rear is fixed to the bottom surface of the lower support seat 11. The front and rear middle parts of the connecting beam 12 are formed with vertical adjustment slots 13, and the front and rear two vertical adjustment columns 14 are inserted into the corresponding vertical adjustment slots 13 and cooperate with the vertical adjustment slots 13. Positioning through holes are formed on the left and right side walls of the vertical adjustment slot 13, and a plurality of connecting through holes extending left and right and arranged up and down are formed on the vertical adjustment column 14. The connecting through holes of the part of the vertical adjustment column 14 in the vertical adjustment slot 13 are connected and fixed with the corresponding two positioning through holes by positioning pins;

[0025] A first worm gear rotary drive 30 is fixed to the bottom of the vertical adjustment column 14, and the bottom of the first vertical lifting adjustment screw 32 of the first worm gear rotary drive 30 extends out of the bottom end of the first worm gear rotary drive 30 and is fixed with a supporting foot 33. The bottom surfaces of the two corresponding front and rear supporting feet 33 are fixed to the same first connecting support beam 34 extending front and back.

[0026] The outer shell of the first worm gear rotary drive 30 is fixed on the bottom surface of the vertical adjustment column 14, the inner annular ring is in the outer shell, the inner annular ring is fixed on the outer shell, the worm gear is inserted into the outside of the inner annular ring, and a plurality of balls are provided between the inner side wall of the worm gear and the outer side wall of the inner annular ring, and the two are movably connected. A worm is movably connected to the outer shell, and the worm is meshed with the worm gear. A driving motor is fixed on the outer wall of the outer shell, and the output shaft of the driving motor is fixedly connected to the worm, and the screw sleeve 35 is fixed On the worm gear, the first vertical lifting adjustment stud 32 is screwed on the screw sleeve 35, the bottom end of the first vertical lifting adjustment stud 32 extends out of the bottom end of the screw sleeve 35 and is installed with a supporting foot 33, the top end of the first vertical lifting adjustment stud 32 extends out of the top end of the screw sleeve 35 and is inserted into the middle through hole of the vertical adjustment column 14, and a limiting ring is nested in the annular groove formed on the outer wall of the top end of the first vertical lifting adjustment stud 32, and the outer diameter of the limiting ring is larger than the screw through hole in the middle of the screw sleeve 35.

[0027] By operating the driving motor of the first worm gear rotation drive 30, the first vertical lifting adjustment stud 32 can be automatically lifted and lowered, and the first connecting support beam 34 can be automatically lifted and lowered to meet the use needs.

[0028] Furthermore, the middle portion of the connecting beam 12 has a slot, the upper connecting seat of the lifting cylinder 15 is located in the slot, the middle portion of the upper connecting seat of the lifting cylinder 15 is formed with a through hole extending left and right, the connecting shaft is clamped in the through hole of the upper connecting seat of the lifting cylinder 15 and the side through holes inserted into the left and right side walls of the slot, and the upper connecting seat of the lifting cylinder 15 is movably connected to the connecting beam 12 via the connecting shaft;

[0029] The bottom end of the push rod of the lifting cylinder 15 is movably connected to a lifting beam 16 extending forward and backward through a hinge shaft. The front and rear parts of the lifting beam 16 are both formed with lower vertical through grooves 161. The lower part of the vertical adjustment column 14 is inserted into the corresponding lower vertical through groove 161 and cooperates with the lower vertical through groove 161. The bottom of the vertical adjustment column 14 extends out of the bottom end of the corresponding lower vertical through groove 161.

[0030] Furthermore, side connecting holes are formed on the left and right side walls of the lower vertical through slot 161, and the connecting hole of the part of the vertical adjustment column 14 in the lower vertical through slot 161 is connected and fixed to the corresponding two side connecting holes through positioning pins.

[0031] Furthermore, a cylinder displacement sensor is installed on the lift cylinder 15. This allows the distance pushed by the push rod of the lift cylinder 15 to be constantly detected and its sensing signal transmitted to the control host, allowing the control host to obtain the distance pushed by the push rod of the lift cylinder 15, thereby facilitating monitoring and understanding of the operation status.

[0032] Furthermore, the middle part of the bottom surface of the support seat 20 is movably connected to a guide wheel 24 through a bearing, and the guide wheel 24 is located in a left-right extending guide groove formed in the middle part of the top surface of the front support leg transverse beam 10, and inner grooves extending left-right are formed on the front and rear inner walls of the lower part of the guide groove. A limit plate with an outer diameter greater than the distance between the front and rear inner walls of the upper part of the guide groove is fixed on the bottom surface of the guide wheel 24, and the front and rear parts of the limit plate are located in the corresponding inner grooves. The front and rear parts of the top surface of the front support leg transverse beam 10 are fixed with self-lubricating plates 1, and the front and rear parts of the bottom surface of the support seat 20 are pressed against the top surface of the corresponding self-lubricating plate 1.

[0033] Furthermore, the self-lubricating plate 1 is a polytetrafluoroethylene plate.

[0034] Furthermore, the right end of the left support seat 20 and the left end of the right support seat 20 are both movably connected to one end of the transverse link 2 through a hinge shaft, and the middle part of the two transverse links 2 close to each other are formed with screw holes, and the two ends of the transverse adjustment screw 3 are screwed in the corresponding screw holes, and the left and right threads of the transverse adjustment screw 3 have opposite rotation directions.

[0035] Furthermore, the right side of a support seat 20 is movably connected to the end of the push rod of the transverse moving cylinder 4 through a hinge shaft, and the other end of the transverse moving cylinder 4 is movably connected to the fixed seat 5 through a hinge shaft. The lower part of the fixed seat 5 is in the guide groove, and the bottom surface of the guide groove is fixed with a positioning plate 6 extending left and right. A plurality of bottom positioning grooves 61 are formed on the positioning plate 6. The bottom surface of the bottom plate of the fixed seat 5 is pressed against the top surface of the positioning plate 6. An upper positioning slot is formed on the bottom plate of the fixed seat 5. The positioning block 7 is inserted into the upper positioning slot and the corresponding bottom positioning slot 61. The left and right sides of the upper part of the positioning block 7 are fixed or formed with a limiting portion, and the bottom surface of the limiting portion is pressed against the top surface of the bottom plate of the fixed seat 5. After the positioning block 7 is pulled out, the push rod of the horizontal moving cylinder 4 is pushed to move the horizontal moving cylinder 4 and the fixed seat 5 to the right for a certain distance. Then, the positioning block 4 is inserted into the upper positioning slot and the corresponding bottom positioning groove 61. The push rod of the horizontal moving cylinder 4 is retracted to synchronously move the two support seats 20 to the right by one position, thereby realizing horizontal position movement, which is easy to adjust.

[0036] When the present embodiment is in use, the vertical adjustment column 14 is adjusted downward by removing the locating pins between the connecting through hole of the portion in the vertical adjustment slot 13 and the corresponding two positioning through holes. The vertical adjustment column 14 can be adjusted downward by pushing the push rod of the lifting oil cylinder 15, so that the connecting through hole of the portion in the vertical adjustment slot 13 and the corresponding two positioning through holes are fixed by the locating pins. This can realize the downward movement of the supporting foot 33, thereby changing its position and satisfying the supporting effect.

[0037] Among them, a cylinder displacement sensor is installed on the lifting cylinder 15, so that the control host can understand the distance of its push rod being pushed out, and can control the oil pressure and flow of the hydraulic system through the control host through the real-time transmitted signal, thereby controlling the distance of the push rod of the lifting cylinder 15 being pushed out (the distance control of the push rod of the lifting cylinder 15 is operated and controlled in combination with the cylinder displacement sensor, which is an existing conventional structure and control method and will not be described in detail here), realizing the control of the pushing distance, meeting the needs of the push rod pushing distance, and its adjustment and control are convenient.

[0038] Finally, it should be noted that the above embodiments are merely representative examples of the present invention. Obviously, the present invention is not limited to the above embodiments and is susceptible to numerous variations. Any simple modifications, equivalent variations, and modifications to the above embodiments based on the technical essence of the present invention shall be deemed to fall within the scope of protection of the present invention.

Claims

1. A front support leg structure, comprising a front support leg transverse beam (10), characterized in that: A support seat (20) is installed above the left and right parts of the front leg transverse beam (10), and a reverse roller mounting seat (21) is fixed to the left and right parts of the bottom surface of the support seat (20). A balance beam (22) is movably connected to the reverse roller mounting seat (21) through a hinge shaft, and a reverse roller group (23) is installed at the front and rear of the balance beam (22); The bottom surface of the middle part, the bottom surface of the left side of the middle part and the bottom surface of the right side of the middle part of the front leg transverse beam (10) are all fixed with a lower support seat (11), and the bottom surface of the lower support seat (11) is fixed with a connecting beam (12) extending front and rear. The middle parts of the front and rear parts of the connecting beam (12) are both formed with vertical adjustment slots (13), and the front and rear two vertical adjustment columns (14) are inserted into the corresponding vertical adjustment slots (13) and matched with the vertical adjustment slots (13). Positioning holes are formed on the left and right side walls of the vertical adjustment slots (13), and a plurality of connecting holes extending left and right and arranged in an upper and lower manner are formed on the vertical adjustment column (14). The connecting holes of the part of the vertical adjustment column (14) in the vertical adjustment slot (13) are connected and fixed with the corresponding two positioning holes through positioning pins. A first worm gear rotary drive (30) is fixed to the bottom of the vertical adjustment column (14), and a first vertical lifting adjustment screw (32) of the first worm gear rotary drive (30) extends out of the bottom end of the first worm gear rotary drive (30) and is fixed with a supporting foot (33), and the bottom surfaces of the two corresponding supporting feet (33) are fixed with a first connecting support beam (34) extending forward and backward.

2. The front leg structure according to claim 1, characterized in that: The middle portion of the connecting beam (12) has a slot, the upper connecting seat of the lifting oil cylinder (15) is located in the slot, the middle portion of the upper connecting seat of the lifting oil cylinder (15) is formed with a through hole extending left and right, the connecting shaft is clamped in the through hole of the upper connecting seat of the lifting oil cylinder (15) and the side through holes inserted in the left and right side walls of the slot, and the upper connecting seat of the lifting oil cylinder (15) is movably connected to the connecting beam (12) via the connecting shaft; The bottom end of the push rod of the lifting cylinder (15) is movably connected to a lifting beam (16) extending forward and backward through a hinge shaft. The front and rear parts of the lifting beam (16) are both formed with lower vertical through grooves (161). The lower part of the vertical adjustment column (14) is inserted into the corresponding lower vertical through groove (161) and matched with the lower vertical through groove (161). The bottom of the vertical adjustment column (14) extends out of the bottom end of the corresponding lower vertical through groove (161).

3. The front leg structure according to claim 2, characterized in that: Side connecting through holes are formed on both left and right side walls of the lower vertical through slot (161), and the connecting through hole of the portion of the vertical adjustment column (14) located in the lower vertical through slot (161) is connected and fixed to the corresponding two side connecting through holes via positioning pins.

4. The front support leg structure according to claim 2, characterized in that: A cylinder displacement sensor is installed on the lifting cylinder (15).

5. The front support leg structure according to claim 1, characterized in that: The middle part of the bottom surface of the support seat (20) is movably connected to a guide wheel (24) through a bearing. The guide wheel (24) is located in a left-right extending guide groove formed in the middle part of the top surface of the front support leg transverse beam (10). The front and rear inner walls of the lower part of the guide groove are both formed with left-right extending inner grooves. A limit plate with an outer diameter greater than the distance between the front and rear inner walls of the upper part of the guide groove is fixed to the bottom surface of the guide wheel (24). The front and rear parts of the limit plate are located in the corresponding inner grooves. The front and rear parts of the top surface of the front support leg transverse beam (10) are both fixed with self-lubricating plates (1). The front and rear parts of the bottom surface of the support seat (20) are pressed against the top surface of the corresponding self-lubricating plates (1).

6. The front support leg structure according to claim 5, characterized in that: The self-lubricating plate (1) is a polytetrafluoroethylene plate.

7. The front support leg structure according to claim 5, characterized in that: The right end of the left support seat (20) and the left end of the right support seat (20) are both movably connected to one end of the transverse connecting rod (2) through a hinge shaft, and the middle parts of the two transverse connecting rods (2) close to each other are formed with screw holes, and the two ends of the transverse adjusting screw (3) are screwed into the corresponding screw holes, and the left and right threads of the transverse adjusting screw (3) are rotated in opposite directions.

8. The front support leg structure according to claim 5, characterized in that: The right side of a support seat (20) is movably connected to the end of a push rod of a transverse moving oil cylinder (4) through a hinge shaft, and the other end of the transverse moving oil cylinder (4) is movably connected to a fixed seat (5) through a hinge shaft. The lower part of the fixed seat (5) is in the guide groove, and the bottom surface of the guide groove is fixed with a positioning plate (6) extending left and right. The positioning plate (6) is formed with a plurality of bottom positioning grooves (61). The bottom surface of the bottom plate of the fixed seat (5) is pressed against the top surface of the positioning plate (6). The bottom plate of the fixed seat (5) is formed with an upper positioning slot. The positioning block (7) is inserted into the upper positioning slot and the corresponding bottom positioning slot (61). The left and right sides of the upper part of the positioning block (7) are fixed or formed with a limiting portion, and the bottom surface of the limiting portion is pressed against the top surface of the bottom plate of the fixed seat (5).

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