Transmission rack on pipe jacking machine

Abstract

The utility model discloses a transmission rack on a tube push bench, and relates to the technical field of seamless steel tube equipment. Comprising a plurality of transmission racks which are sequentially connected end to end, a male V-shaped end face is formed at the end of a first transmission rack, a female V-shaped end face is formed at the end of a second transmission rack, a first key groove and a second key groove are formed in the male V-shaped end face and the female V-shaped end face respectively, the first key groove and the second key groove are matched to form a key hole, and an end face key is installed in the key hole. A first side boss and a first top boss are arranged in the first transmission rack, a second side boss and a second top boss are arranged in the second transmission rack, the first side boss and the second side boss are matched to form a side hoop boss, and the first top boss and the second top boss are matched to form a top hoop boss. The side hoop boss and the top hoop boss are sleeved with a side hoop ring and a top hoop ring respectively. The whole section of transmission rack is reliable in connection, impact resistance is improved, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of seamless steel pipe equipment, in particular to a transmission rack on a pipe jacking machine. Background Art

[0002] The pipe jacking machine is the main equipment on the seamless steel pipe production line. When in use, the transmission rack on the pipe jacking machine will push the hot-rolled rough pipe delivered from the piercing machine, and the hot-rolled rough pipe will be continuously deformed in the passive roller die and form a rough pipe; since the total length of the transmission rack is about tens of meters and the total weight is about tens of tons, neither the preparation of the billet nor the processing of the transmission rack can ensure that the transmission rack is a complete whole. Therefore, the transmission rack is generally composed of multiple sections, and adjacent transmission racks are connected end to end to form a whole. At the same time, during the production of seamless steel pipes, the transmission rack will withstand hundreds of tons of jacking force, so a very reliable connection method must be adopted between each adjacent transmission rack to improve production efficiency. Utility Model Content

[0003] The utility model aims to provide a transmission rack on a pipe jacking machine to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a transmission rack on a pipe jacking machine, comprising multiple sections of transmission racks connected end to end in sequence, wherein, among each two adjacent transmission racks, one transmission rack is a first transmission rack, and the other transmission rack is a second transmission rack: the end of the first transmission rack toward the second transmission rack forms a convex male V-shaped end face, and the end of the second transmission rack toward the first transmission rack forms a concave female V-shaped end face, the male V-shaped end face and the female V-shaped end face match each other, and the male V-shaped end face is provided with at least one first keyway, and the female V-shaped end face is provided with a second keyway corresponding to the first keyway one by one, each pair of mutually corresponding first keyways and second keyways cooperate to form a closed keyhole, and an end face key is installed in the keyhole for each adjacent first transmission rack. and a second transmission rack for positioning; the first transmission rack and the second transmission rack both include a working surface containing rack teeth, two opposite side surfaces and a bottom surface opposite to the working surface, wherein the two opposite side surfaces of the first transmission rack are respectively provided with first side bosses, the two opposite side surfaces of the second transmission rack are respectively provided with second side bosses corresponding to the first side bosses one by one, each corresponding first side boss and second side boss cooperate to form a side hoop boss, and a side hoop ring is sleeved on the side hoop boss; a first top boss is provided on the bottom surface opposite to the working surface of the first transmission rack, and a second top boss corresponding to the first top boss is provided on the bottom surface opposite to the working surface of the second transmission rack, the first top boss and the second top boss cooperate to form a top hoop boss, and a top hoop ring is sleeved on the top hoop boss.

[0005] Based on the above technical features, each two adjacent transmission racks are respectively selected to have an outwardly convex male V-shaped end face and an inwardly concave female V-shaped end face for docking. At the same time, the first keyway and the second keyway are respectively processed on the male V-shaped end face and the female V-shaped end face, and the end face key is installed in the first keyway or the second keyway to achieve rapid positioning and docking between the two adjacent transmission racks. At the same time, side hoop bosses and top hoop bosses are respectively processed on the two opposite side faces and the bottom face opposite to the working face of the two adjacent transmission racks. After the positioning and docking of the two adjacent transmission racks are completed, a side hoop ring is sleeved on the side hoop boss and a top hoop ring is sleeved on the top hoop boss, so as to finally complete the locking of the two adjacent transmission racks.

[0006] Preferably in the present technical solution, the first keyway and the second keyway are both rectangular grooves, and the first keyway is symmetrically arranged on the male V-shaped end face, and the second keyway is symmetrically arranged on the female V-shaped end face; more preferably, the first keyway and the second keyway have the same specifications and dimensions, the opposite ends of the end face key are respectively tightly attached to the inner surface of the first keyway, and the end face key is fixedly installed in the first keyway by bolts.

[0007] Based on the above technical features, since the specifications and dimensions of the first keyway and the second keyway are the same, and the two opposite ends of the end key are respectively tightly attached to the inner surface of the first keyway, precise positioning between the two adjacent transmission racks can be achieved, making the positioning more reliable. At the same time, there is no need for staff to fine-tune the adjacent transmission racks, so that the adjacent transmission racks can be accurately docked, thereby improving the positioning and locking efficiency between the adjacent transmission racks.

[0008] In the present technical solution, preferably, the side hoop boss and the top hoop boss are both in the shape of a regular elliptical cylinder; more preferably, the side hoop ring and the top hoop ring are respectively sleeved on the side hoop boss and the top hoop boss by interference fit.

[0009] Based on the above technical features, the two adjacent transmission racks adopt a locking method of interference fit between the hoop boss and the hoop, which will make the locking connection between the two adjacent transmission racks more reliable. At the same time, the entire transmission rack after the interference fit locking connection will also have strong impact resistance, so that the transmission rack can withstand huge thrust force.

[0010] Preferably in the present technical solution, the first side boss is fixedly connected to two opposite side surfaces of the first transmission rack, the end surface of the first side boss is smoothly connected to the end surface of the first transmission rack, and they are combined into a male V-shaped end surface, and at the same time, the second side boss is fixedly connected to two opposite side surfaces of the second transmission rack, the end surface of the second side boss is smoothly connected to the end surface of the second transmission rack, and they are combined into a female V-shaped end surface.

[0011] Preferably in the present technical solution, a first top-positioning ring groove is excavated on the bottom surface of the first transmission rack, and the first transmission rack and the first top-positioning ring groove are constructed to form the first top-positioning boss, and a second top-positioning ring groove is excavated on the bottom surface of the second transmission rack, and the second transmission rack and the second top-positioning ring groove are constructed to form the second top-positioning boss.

[0012] Based on the above technical features, the top boss is designed by slotting the bottom surface of the transmission rack to save material costs, and the top hoop boss designed by slotting can also cooperate with the top hoop ring to achieve the top locking connection of the transmission rack.

[0013] Preferably in the present technical solution, the side hoop ring and the top hoop ring are made of 42CrMo forgings.

[0014] Based on the above technical features, the side hoop ring and the top hoop ring are both made of 42CrMo forgings, which can not only make them have good strength and toughness, but also reduce the damage to the side hoop ring and the top hoop ring due to temper brittleness and other problems when the side hoop ring and the top hoop ring are connected by interference fit.

[0015] Preferably in the present technical solution, the included angle of the male V-shaped end face is 90° to 150°, and the angle of the female V-shaped end face is matched with the angle of the male V-shaped end face; more preferably, the included angle of the male V-shaped end face is 135°. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of adjacent transmission racks after being positioned and docked in an embodiment of the utility model;

[0017] Figure 2 After the adjacent transmission racks in the embodiment of the utility model are positioned and docked Figure 1 Schematic diagram of the Y-direction structure;

[0018] Figure 3 It is a schematic diagram of the Y-direction structure when adjacent transmission racks are not butted together in the embodiment of the utility model;

[0019] Figure 4 After the adjacent transmission racks in the embodiment of the utility model are positioned and docked Figure 1 GG cross-sectional view;

[0020] Figure 5 After the adjacent transmission racks in the embodiment of the utility model are positioned and docked Figure 1 HH cross-sectional view;

[0021] Figure 6 This is a cross-sectional view of adjacent transmission racks in the embodiment of the utility model when they are not butted together. In the figure: 1, first transmission rack; 11, male V-shaped end face; 12, first keyway; 2, second transmission rack; 21, female V-shaped end face; 22, second keyway; 3, side hoop boss; 31, first side boss; 32, second side boss; 4, top hoop boss; 41, first top boss; 42, second top boss; 43, first top ring groove; 44, second top ring groove; 5, side hoop ring; 6, top hoop ring; 7, end face key; 71, bolt; 81, working surface; 82, side surface; 83, bottom surface. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] It should be noted that, in the description of the present invention, the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0024] In addition, it should be understood that for the convenience of description, the sizes of various components shown in the drawings are not drawn according to the actual proportional relationship.

[0025] It should be noted that like reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined or described in one drawing, it will not require further detailed discussion and description in the description of the subsequent drawings.

[0026] like Figures 1 to 6 As shown, the utility model provides a technical solution: a transmission rack on a pipe jacking machine, which includes multiple sections of transmission racks connected end to end in sequence, in each adjacent two transmission racks, one transmission rack is a first transmission rack 1, and the other transmission rack is a second transmission rack 2, the first transmission rack 1 forms a convex male V-shaped end face 11 at the end facing the second transmission rack 2, and the second transmission rack 2 forms a concave female V-shaped end face 21 at the end facing the first transmission rack 1, the male V-shaped end face 11 and the female V-shaped end face 21 are matched with each other, and at least one first key groove 12 is provided on the male V-shaped end face 11, and a second key groove 22 corresponding to the first key groove 12 is provided on the female V-shaped end face 21, each pair of corresponding first key grooves 12 and second key grooves 22 cooperate to form a closed key hole, and an end face key 7 is installed in the key hole for positioning and docking each adjacent first transmission rack 1 and second transmission rack 2.

[0027] Further, such as Figures 1 to 6As shown, the first transmission rack 1 and the second transmission rack 2 both include a working surface 81 containing rack teeth, two opposite side surfaces 82 and a bottom surface 83 opposite to the working surface, wherein the two opposite side surfaces 82 of the first transmission rack 1 are respectively provided with first side bosses 31, and the two opposite side surfaces 82 of the second transmission rack 2 are respectively provided with second side bosses 32 corresponding to the first side bosses 31 one by one, and each corresponding first side boss 31 and second side boss 32 cooperate to form a side hoop boss 3, and a side hoop ring 5 is sleeved on the side hoop boss 3; at the same time, a first top boss 41 is provided on the bottom surface 83 opposite to the working surface 81 of the first transmission rack 1, and a second top boss 42 corresponding to the first top boss 41 is provided on the bottom surface 83 opposite to the working surface 81 of the second transmission rack 2, and the first top boss 41 and the second top boss 42 cooperate to form a top hoop boss 4, and a top hoop ring 6 is sleeved on the top hoop boss 4.

[0028] Specifically, in the utility model, each two adjacent transmission racks respectively select a male V-shaped end face 11 with an outward convex shape and a female V-shaped end face 21 with an inward concave shape to cooperate with each other, and at the same time, a first keyway 12 and a second keyway 22 are respectively processed on the male V-shaped end face 11 and the female V-shaped end face 21, and an end face key is installed in the first keyway 12 or the second keyway 22 to achieve rapid positioning and docking between the two adjacent transmission racks. At the same time, side hoop bosses 3 and top hoop bosses 4 are respectively processed on the two opposite side faces 82 of the two adjacent transmission racks and the bottom face 83 opposite to the working face 81, and after the positioning and docking of the two adjacent transmission racks are completed, a side hoop ring 5 is sleeved on the side hoop boss 3 and a top hoop ring 6 is sleeved on the top hoop boss 4, and finally the two adjacent transmission racks are locked. The entire transmission rack connection formed by the above operation steps is more reliable and has strong impact resistance and service life.

[0029] It should be clear that in the present invention, there is no need to limit the shape and installation position of the first keyway 12 and the second keyway 22. The first keyway 21 and the second keyway 22 can be dug into a variety of shapes, as long as the first keyway 21 and the second keyway 22 can meet the installation of the end face key 7, and the positioning and docking of the first transmission rack 1 and the second transmission rack 2 can be achieved through the installed end face key 7. In the embodiment of the utility model, in order to enable the first transmission rack 1 and the second transmission rack 2 to be quickly positioned and docked, the first key groove 12 and the second key groove 22 are both designed as rectangular grooves, and two first key grooves 12 are symmetrically arranged on the male V-shaped end surface 11, and two second key grooves 22 are symmetrically arranged on the female V-shaped end surface 21, and the first key groove 12 and the second key groove 22 are both parallel to the bottom surface 83 opposite to the working surface 81; at the same time, in order to make the positioning of the first transmission rack 1 and the second transmission rack 2 more reliable, and to enable accurate docking of the adjacent transmission racks without the need for the staff to fine-tune them, the first key groove 12 and the second key groove 22 can be uniformly set to key grooves with the same specifications and sizes, and the first key groove 12 and the second key groove 22 are set one by one, and when the first transmission rack 1 and the second transmission rack 2 are positioned and docked, the first key groove 12 and the second key groove 22 can just match to form a key groove that can A closed key hole is provided to accommodate and install the end face key 7, and the opposite ends of the end face key 7 are respectively pressed against the inner surface of the first key groove 12, and the end face key 7 is fixedly installed in the first key groove 12 by bolts 71. Of course, in other embodiments, the end face key 7 can also be installed in the second key groove 22 by bolts 71; the end face key 7 is installed in the first key groove 12 or the second key groove 22 by bolts 71. When the first transmission rack 1 and the second transmission rack 2 are positioned and docked, the end face key 7 can not only meet the rapid positioning of the first transmission rack 1 and the second transmission rack 2, but also play a buffering role for the first transmission rack 1 and the second transmission rack 2. Therefore, after the first transmission rack 1 and the second transmission rack 2 are positioned and docked for many times, the end face key 7 will inevitably be damaged and need to be replaced. The end face key 7 is installed in the first key groove 12 or the second key groove 22 by bolts 71, which will make it easier to replace the end face key 7.

[0030] Further, such as Figures 1 to 6As shown, in the embodiment of the utility model, the side hoop boss 3 formed by the first side boss 31 and the second side boss 31 corresponding to each other and the top hoop boss 4 formed by the first top boss 41 and the second top boss 42 corresponding to each other are both in the shape of a regular elliptical column, and the side hoop ring 5 and the top hoop ring 6 are respectively sleeved on the side hoop boss 3 and the top hoop boss 4 by interference fit, and the side hoop ring 5 and the top hoop ring 6 are heated by adopting a temperature difference method, and then the side hoop ring 5 is sleeved into the first side boss 31 and the second side boss The side hoop ring 5 and the top hoop ring 6 are laterally locked on the side hoop boss 3 formed by the first top boss 41 and the second top boss 42, and the top hoop ring 6 is inserted into the top hoop boss 4 formed by the first top boss 41 and the second top boss 42 for top locking; preferably, the material of the side hoop ring 5 and the top hoop ring 6 can be selected from 42CrMo forgings, so that the side hoop ring 5 and the top hoop ring 6 have good strength and toughness, and can also reduce the damage to the side hoop ring 5 and the top hoop ring 6 caused by the tempering brittleness problem when the side hoop ring 5 and the top hoop ring 6 are heated and cooled by the temperature difference method.

[0031] like Figures 1 to 6 As shown, in the embodiment of the utility model, the first side boss 31 is fixedly connected to the two opposite side surfaces 82 of the first transmission rack 1, and the end surface of the first side boss 31 is smoothly connected to the end surface of the first transmission rack 1, and they are combined to form a male V-shaped end surface 11. At the same time, the second side boss 32 is fixedly connected to the two opposite side surfaces 82 of the second transmission rack 2, and the end surface of the second side boss 32 is smoothly connected to the end surface of the second transmission rack 2, and they are combined to form a female V-shaped end surface 21. Preferably, in the embodiment of the utility model, the first side boss 31 is integrated with the first transmission rack 1. The second side boss 32 and the second transmission rack 2 are integrally formed and processed to form an integral component; at the same time, the angle of the male V-shaped end face 11 is 90°~150° (specifically 90°, 95°, 100°, 105°, 110°, 115°, 120°, 125°, 130°, 135°, 140°, 145°, 150°), and the angle of the female V-shaped end face 21 is adapted to the angle of the male V-shaped end face 11. Preferably, in an embodiment of the utility model, the angle of the male V-shaped end face is designed to be 135°.

[0032] like Figures 1 to 6As shown, in the embodiment of the utility model, in order to save the cost of material use, and also to realize the top locking connection of the transmission rack by cooperating with the top hoop ring through the top boss designed by the groove, a first top ring groove 43 is excavated on the bottom surface 83 of the first transmission rack 1, and the first transmission rack 1 and the first top ring groove 43 are constructed to form a first top boss 41, and a second top ring groove 44 is excavated on the bottom surface 83 of the second transmission rack 2, and the second transmission rack 2 and the second top ring groove 44 are constructed to form a second top boss 42; at the same time, in other embodiments, in addition to the groove design in the embodiment of the utility model, the first top boss 41 and the second top boss 42 can also adopt the structural design method of the first side boss 31 and the second side boss 32, so that the first top boss 41 is fixedly connected to the bottom surface 83 opposite to the working surface 81 of the first transmission rack 1, and the second top boss 42 is fixedly connected to the bottom surface 83 opposite to the working surface 81 of the second transmission rack 2.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A transmission rack on a pipe jacking machine, characterized in that: It comprises a plurality of transmission racks connected end to end in sequence, wherein, of each two adjacent transmission racks, one transmission rack is a first transmission rack (1) and the other transmission rack is a second transmission rack (2): The end of the first transmission rack (1) facing the second transmission rack (2) forms a male V-shaped end surface (11) that is convex outward, and the end of the second transmission rack (2) facing the first transmission rack (1) forms a female V-shaped end surface (21) that is concave inward, the male V-shaped end surface (11) and the female V-shaped end surface (21) are mutually matched, and the male V-shaped end surface (11) is provided with at least one first key groove (12), and the female V-shaped end surface (21) is provided with a second key groove (22) that corresponds to the first key groove (12) one by one, and each pair of corresponding first key grooves (12) and second key grooves (22) cooperate to form a closed key hole, and an end face key (7) is installed in the key hole for positioning and docking each adjacent first transmission rack (1) and second transmission rack (2); The first transmission rack (1) and the second transmission rack (2) both comprise a working surface (81) containing rack teeth, two opposite side surfaces (82) and a bottom surface (83) opposite to the working surface (81), wherein: Two opposite side surfaces (82) of the first transmission rack (1) are respectively provided with first side bosses (31); two opposite side surfaces (82) of the second transmission rack (2) are respectively provided with second side bosses (32) corresponding to the first side bosses (31); each corresponding first side boss (31) and second side boss (32) cooperate to form a side hoop boss (3); a side hoop ring (5) is sleeved on the side hoop boss (3); A first top boss (41) is provided on a bottom surface (83) of the first transmission rack (1) opposite to the working surface (81), and a second top boss (42) corresponding to the first top boss (41) is provided on a bottom surface (83) of the second transmission rack (2) opposite to the working surface (81), and each corresponding first top boss (41) and second top boss (42) cooperate to form a top hoop boss (4), and a top hoop ring (6) is sleeved on the top hoop boss (4).

2. The transmission rack on the pipe jacking machine according to claim 1, characterized in that: The first keyway (12) and the second keyway (22) are both rectangular grooves, and the first keyway (12) is symmetrically arranged on the male V-shaped end surface (11), and the second keyway (22) is symmetrically arranged on the female V-shaped end surface.

3. The transmission rack on the pipe jacking machine according to claim 2, characterized in that: The first keyway (12) and the second keyway (22) have the same specifications and dimensions, the opposite ends of the end face key (7) are respectively tightly attached to the inner surface of the first keyway (12), and the end face key (7) is fixedly installed in the first keyway (12) by means of bolts (71).

4. The transmission rack on the pipe jacking machine according to claim 1, characterized in that: The side hoop boss (3) and the top hoop boss (4) are both in the shape of a regular elliptical column.

5. The transmission rack on the pipe jacking machine according to claim 4, characterized in that: The side hoop ring (5) and the top hoop ring (6) are respectively sleeved on the side hoop boss (3) and the top hoop boss (4) through interference fit.

6. The transmission rack on the pipe jacking machine according to claim 4, characterized in that: The first side boss (31) is fixedly connected to two opposite side surfaces (82) of the first transmission rack (1), and the end surface of the first side boss (31) is smoothly connected to the end surface of the first transmission rack (1), and they are combined to form a male V-shaped end surface (11). At the same time, the second side boss (32) is fixedly connected to two opposite side surfaces (82) of the second transmission rack (2), and the end surface of the second side boss (32) is smoothly connected to the end surface of the second transmission rack (2), and they are combined to form a female V-shaped end surface (21).

7. The transmission rack on the pipe jacking machine according to claim 4, characterized in that: A first top ring groove (43) is excavated on the bottom surface (83) of the first transmission rack (1), and the first transmission rack (1) and the first top ring groove (43) are constructed to form the first top boss (41); a second top ring groove (44) is excavated on the bottom surface (83) of the second transmission rack (2), and the second transmission rack (2) and the second top ring groove (44) are constructed to form the second top boss (42).

8. The transmission rack on the pipe jacking machine according to claim 5, characterized in that: The side hoop ring (5) and the top hoop ring (6) are made of 42CrMo forgings.

9. The transmission rack on the pipe jacking machine according to claim 6, characterized in that: The included angle of the male V-shaped end surface (11) is 90° to 150°, and the angle of the female V-shaped end surface (21) matches the angle of the male V-shaped end surface (11).

10. The transmission rack on the pipe jacking machine according to claim 9, characterized in that: The included angle of the male V-shaped end face is 135°.

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