Connecting device for shovel plate and body of heading machine

Abstract

The utility model provides a shovel plate and body connecting device of a heading machine, and relates to the technical field of heading machines. The shovel plate and body connecting device of the heading machine comprises a pin shaft, a shovel plate bush and two body bushings, the shovel plate bush is arranged on the pin shaft in a sleeving mode and used for being connected with a shovel plate lug on a shovel plate, a first spiral annular oil storage groove is formed in the inner surface, making contact with the pin shaft, of the shovel plate bush, and a second spiral annular oil storage groove is formed in the inner surface, making contact with the pin shaft, of the shovel plate bush. The first spiral annular oil storage groove is communicated with an oil injection pipe on the shovel plate lug seat through a lubricating hole penetrating through the shovel plate lining in the radial direction of the shovel plate lining. The two body linings are arranged on the pin shaft in a sleeving mode and located at the two ends of the shovel plate lining respectively, the two body linings are used for being connected with two body frames of the heading machine respectively, and second spiral annular oil storage grooves are formed in the inner surfaces, making contact with the pin shaft, of the body linings. And the second spiral annular oil storage tank is communicated with the first spiral annular oil storage tank.

Description

Technical Field

[0001] This utility model relates to the field of tunneling machine technology, and more specifically, to a tunneling machine shovel plate and body connection device. Background Technology

[0002] During the shoveling and support process, the shovel of the tunneling machine needs to withstand large bending and shear forces, and the shovel needs to move up and down frequently for shoveling and support. During operation, the rotating pin will generate dynamic friction with the mating bushing, which requires the pin to have sufficient strength and reliable lubrication of the pin surface.

[0003] Currently, horizontal and vertical lubrication channels are generally provided on the pins, but this reduces the strength of the pins, making them prone to breakage during use and seriously affecting the advance of the tunneling machine. Utility Model Content

[0004] The problem this invention solves is: how to balance the lubrication and strength of the pin.

[0005] To solve the above problems, this utility model provides a connection device between the shovel plate and the body of a tunneling machine, characterized in that it includes a pin, a shovel plate bushing and two body bushings. The shovel plate bushing is sleeved on the pin and is used to connect with the shovel plate lug on the shovel plate. A first spiral annular oil storage groove is provided on the inner surface of the shovel plate bushing that contacts the pin. The first spiral annular oil storage groove is connected to the oil injection pipe on the shovel plate lug through a lubrication hole that penetrates the shovel plate bushing radially.

[0006] The two body bushings are respectively fitted on the pin and located at both ends of the shovel bushing. The two body bushings are respectively used to connect with the two body frames of the tunneling machine. A second spiral annular oil storage groove is provided on the inner surface of the body bushing that contacts the pin. The second spiral annular oil storage groove is connected to the first spiral annular oil storage groove.

[0007] Optionally, a first annular groove is provided on the outer surface of the shovel bushing that contacts the shovel lug seat. The first annular groove is connected to the oil injection pipe and the lubrication hole.

[0008] Optionally, a first sealing groove is provided on the inner surface of the body bushing. The first sealing groove is located at the end of the body bushing away from the shovel bushing, and a first sealing ring is provided in the first sealing groove. The first sealing ring is sealed and connected to the pin.

[0009] Optionally, the body bushing is further provided with an annular boss, which is located at one end of the body bushing near the shovel bushing. A second sealing groove is provided on the annular boss, and a second sealing ring is provided in the second sealing groove. The second sealing ring is sealed to the shovel lug.

[0010] Optionally, an annular notch is also provided on the inner surface of the annular boss that contacts the pin, and the annular notch communicates with the second spiral annular oil storage groove.

[0011] Optionally, the tunneling machine shovel plate and body connection device further includes a first baffle, one end of which is connected to one of the two body frames, and the other end of which is connected to one end of the pin.

[0012] Optionally, the shaft end of the pin connected to the first baffle is provided with an eccentric threaded hole, and the eccentric threaded hole is connected to the first baffle by bolts.

[0013] Optionally, the shaft end of the pin that connects to the first baffle is further provided with a central threaded hole, which is used to connect with an installation tool.

[0014] Optionally, the tunneling machine shovel plate and body connection device further includes a second baffle, one end of which is connected to the other of the two body frames, and the other end of which is connected to the other end of the pin.

[0015] Optionally, a countersunk platform is provided on the shaft end that connects the pin to the second baffle, and the countersunk platform is engaged with the second baffle.

[0016] Compared with the prior art, the tunneling machine shovel and body connection device of this utility model, on the one hand, connects the shovel bushing to the shovel ear seat and is fitted onto the pin shaft, thus indirectly connecting the pin shaft and the shovel ear seat. A first spiral annular oil reservoir is provided on the inner surface of the shovel bushing and the pin shaft, and this first spiral annular oil reservoir is connected to an oil injection pipe on the shovel ear seat. Lubricating grease can enter the first spiral annular oil reservoir through the oil injection pipe, thereby lubricating the pin shaft and reducing wear between the pin shaft and the shovel ear seat. On the other hand, two body bushings are respectively connected to the body frame and fitted onto the pin shaft. The sleeve enables indirect connection between the pin and the two body frames. A second spiral annular oil reservoir is provided on the inner surface of the body bushing that contacts the pin. The second spiral annular oil reservoir is connected to the first spiral annular oil reservoir. Lubricating grease can enter the second spiral annular oil reservoir through the first spiral annular oil reservoir. The second spiral annular oil reservoir can reduce wear between the two body bushings and the pin. In this way, lubrication between the pin and the shovel plate lug seat can be achieved through the shovel plate bushing, and lubrication between the pin and the two body frames can be achieved through the two body bushings. This avoids machining lubrication grooves or other lubrication structures on the pin, thus ensuring the structural strength of the pin. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure after the pin is installed in an embodiment of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure after the first baffle is connected to the pin in an embodiment of this utility model.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1-Pin; 11-Eccentric threaded hole; 12-Central threaded hole; 13-Counterpart; 2-Shovel plate bushing; 21-First spiral annular oil reservoir; 22-First annular groove; 3-Body bushing; 31-Second spiral annular oil reservoir; 32-First sealing ring; 33-Annular boss; 34-Second sealing ring; 35-Annular notch; 4-Body frame; 5-Shovel plate lug; 51-Oil injection pipe; 6-First baffle; 7-Second baffle. Detailed Implementation

[0021] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0022] In the attached figures, the Z-axis represents the vertical position, with the positive direction of the Z-axis (where the arrow points) indicating the top and the negative direction (opposite to the positive direction) indicating the bottom. The X-axis represents the horizontal position, with the positive direction of the X-axis (where the arrow points) indicating the right and the negative direction (opposite to the positive direction) indicating the left. It should be noted that the aforementioned representations of the Z-axis and X-axis are for ease of description and simplification of the invention, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention.

[0023] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in sequences other than those illustrated or described herein.

[0024] Combination Figure 1 As shown, this utility model provides a device for connecting the shovel plate and the body of a tunneling machine. It is characterized by including a pin 1, a shovel plate bushing 2 and two body bushings 3. The shovel plate bushing 2 is sleeved on the pin 1 and is used to connect with the shovel plate ear seat 5 on the shovel plate. A first spiral annular oil storage groove 21 is provided on the inner surface of the shovel plate bushing 2 that contacts the pin 1. The first spiral annular oil storage groove 21 is connected to the oil injection pipe 51 on the shovel plate ear seat 5 through a lubrication hole that penetrates the shovel plate bushing 2 radially.

[0025] Two body bushings 3 are respectively fitted onto the pin 1 and located at both ends of the shovel bushing 2. The two body bushings 3 are respectively used to connect with the two body frames 4 of the tunneling machine. A second spiral annular oil storage groove 31 is provided on the inner surface of the body bushing 3 that contacts the pin 1. The second spiral annular oil storage groove 31 is connected to the first spiral annular oil storage groove 21.

[0026] Specifically, the body refers to the tunneling machine body. The shovel is rotatably connected to the tunneling machine body via a pin 1, allowing the shovel to rotate up and down for shoveling and support. The shovel is connected to the pin 1 via a shovel lug 5, which is fitted onto the shovel bushing 2. The shovel bushing 2 is fitted onto the pin 1. The surface of the shovel bushing 2 in contact with the shovel lug 5 is the outer surface of the shovel bushing 2, and the surface of the shovel bushing 2 in contact with the pin 1 is the inner surface of the shovel bushing 2. The first spiral annular oil storage tank 2... 1. The lubrication hole is machined on the inner surface of the shovel bushing 2. The lubrication hole is machined in the groove of the first spiral annular oil reservoir 21 and passes through the shovel bushing 2 radially. The lubrication hole is connected to the oil injection pipe 51 on the shovel ear seat 5. The lubricating grease added in the oil injection pipe 51 can enter the first spiral annular oil reservoir 21 through the lubrication hole. The lubricating grease in the first spiral annular oil reservoir 21 can diffuse to the surface of the pin 1, which can reduce the friction between the shovel bushing 2 and the pin 1. The two main body frames 4 of the tunneling machine body are connected to the pin shaft 1 through two main body bushings 3. There are two main body bushings 3, which are respectively fitted on the two ends of the pin shaft 1 in the axial direction. The shovel bushing 2 is located between the two main body bushings 3 and abuts against the two main body bushings 3 respectively. The two main body bushings 3 are respectively connected to the two main body frames 4. A second spiral annular oil storage groove 31 is provided on the inner surface of the main body bushing 3 that contacts the pin shaft 1. The second spiral annular oil storage groove 31 is connected to the first spiral annular oil storage groove 21. Lubricating grease can enter the second spiral annular oil storage groove 31 from the first spiral annular oil storage groove 21. The lubricating grease can diffuse to the pin shaft 1 through the second spiral annular oil storage groove 31. The lubricating grease in the second spiral annular oil storage groove 31 can reduce the friction between the main body bushing 3 and the pin shaft 1.

[0027] Therefore, in this embodiment, on the one hand, the shovel bushing 2 is connected to the shovel ear seat 5 and sleeved on the pin 1, thus indirectly connecting the pin 1 and the shovel ear seat 5. A first spiral annular oil reservoir 21 is provided on the inner surface of the shovel bushing 2 and the pin 1, and this first spiral annular oil reservoir 21 is connected to the oil injection pipe 51 on the shovel ear seat 5. Lubricating grease can enter the first spiral annular oil reservoir 21 through the oil injection pipe 51, thereby lubricating the pin 1 and reducing wear between the pin 1 and the shovel ear seat 5. On the other hand, two body bushings 3 are respectively connected to the body frame 4 and sleeved on the pin 1, thus indirectly connecting the pin 1 and the two body bushings 4. The indirect connection between the body frames 4 and the inner surface of the body bushing 3 in contact with the pin 1 is provided with a second spiral annular oil reservoir 31. The second spiral annular oil reservoir 31 is connected to the first spiral annular oil reservoir 21. Lubricating grease can enter the second spiral annular oil reservoir 31 through the first spiral annular oil reservoir 21. The second spiral annular oil reservoir 31 can reduce the wear between the two body bushings 3 and the pin 1. In this way, the lubrication between the pin 1 and the shovel lug 5 can be achieved through the shovel bushing 2, and the lubrication between the pin 1 and the two body frames 4 can be achieved through the two body bushings 3, thereby avoiding the need to machine lubrication grooves or other lubrication structures on the pin 1, so as to ensure the structural strength of the pin 1.

[0028] Optionally, combined Figure 1 As shown, a first annular groove 22 is provided on the outer surface of the shovel bushing 2 that contacts the shovel lug 5. The first annular groove 22 is connected to the oil injection pipe 51 and to the lubrication hole.

[0029] Specifically, the surface of the shovel bushing 2 that contacts the shovel lug 5 is the outer surface of the shovel bushing 2. A first annular groove 22 is machined on the outer surface of the shovel bushing 2, and the first annular groove 22 is connected to the oil injection pipe 51 and the lubrication hole.

[0030] Thus, a first annular groove 22 is provided on the outer surface of the shovel bushing 2 that contacts the shovel ear seat 5. The first annular groove 22 is connected to the oil injection pipe 51 and the lubrication hole. The lubricating grease flowing out of the oil injection pipe 51 can be injected into the first annular groove 22 to achieve lubrication between the shovel bushing 2 and the shovel ear seat 5. At the same time, the lubrication hole can also ensure lubrication between the shovel bushing 2 and the pin 1. This not only reduces the wear between the shovel bushing 2 and the pin 1, but also reduces the wear between the shovel bushing 2 and the shovel ear seat 5, thereby extending the service life of the shovel bushing 2.

[0031] Optionally, combined Figure 1As shown, a first sealing groove is provided on the inner surface of the body bushing 3. The first sealing groove is located at the end of the body bushing 3 away from the shovel bushing 2, and a first sealing ring 32 is provided in the first sealing groove. The first sealing ring 32 is sealed and connected to the pin 1.

[0032] Specifically, taking the body bushing 3 located in the positive direction of the X-axis as an example, the body bushing 3 on the right side is fitted onto the right end of the pin 1, and a first sealing groove is machined on the right end of the body bushing 3. The first sealing groove is located on the inner surface of the body bushing 3 where it is disconnected from the pin 1. A first sealing ring 32 is installed in the first sealing groove. The first sealing ring 32 realizes the sealing connection between the body bushing 3 and the pin 1, thereby preventing external dust from entering between the pin 1 and the body bushing 3, thereby improving the sealing effect between the body bushing 3 and the pin 1, so as to ensure the lubrication effect between the body bushing 3 and the pin 1.

[0033] Thus, by providing a first sealing groove on the main body bushing 3, the first sealing groove is located at the end of the main body bushing 3 away from the shovel bushing 2, and a first sealing ring 32 is provided in the first sealing groove. The first sealing ring 32 is sealed to the pin 1, and the first sealing ring 32 can achieve the sealing between the pin 1 and the two main body bushings 3 to prevent external dust and other impurities from entering, thereby ensuring the lubrication effect between the pin 1 and the two main body bushings 3.

[0034] Optionally, combined Figure 1 As shown, the main body bushing 3 is also provided with an annular boss 33. The annular boss 33 is located at one end of the main body bushing 3 near the shovel bushing. The annular boss 33 is provided with a second sealing groove. The second sealing groove is provided with a second sealing ring 34. The second sealing ring 34 is sealed and connected to the shovel ear seat 5.

[0035] Specifically, taking the body bushing 3 located in the positive X-axis direction as an example, the annular boss 33 is located at the end of the body bushing 3 facing the negative X-axis direction, that is, the end of the body bushing 3 close to the shovel ear seat 5. The left end face of the annular boss 33 abuts against the right end face of the shovel ear seat 5, and a second sealing groove is machined on the left end face of the annular boss 33. The second sealing ring 34 is installed in the second sealing groove. The second sealing ring 34 realizes the sealing connection between the annular boss 33 and the shovel ear seat 5, thereby preventing external dust and other impurities from entering between the body bushing 3 and the pin 1.

[0036] Thus, the annular boss 33 is located at the end of the main body bushing 3 near the shovel plate bushing. The annular boss 33 is provided with a second sealing groove, and a second sealing ring 34 is provided in the second sealing groove. The second sealing ring 34 is sealed to the shovel plate ear seat 5. The second sealing ring 34 can achieve a sealed connection between the main body bushing 3 and the shovel plate ear seat 5 under the fixation of the second sealing groove, thereby preventing external dust and other impurities from entering between the main body bushing 3 and the pin 1, so as to ensure the lubrication effect between the main body bushing 3 and the pin 1.

[0037] Optionally, combined Figure 1 As shown, an annular notch 35 is also provided on the inner surface of the annular boss 33 that contacts the pin 1, and the annular notch 35 is connected to the second spiral annular oil storage groove 31.

[0038] Specifically, the surface of the annular boss 33 that contacts the pin 1 is the inner surface of the annular boss 33. An annular notch 35 is machined on the inner surface of the annular boss 33. The annular notch 35 is connected to the second spiral annular oil reservoir 31. The lubricating grease in the first spiral annular oil reservoir 21 fills the annular notch 35 and then enters the second spiral annular oil reservoir 31. The annular notch 35 can retain the lubricating grease, increase the amount of lubricating grease between the body bushing 3 and the pin 1, and improve the lubrication effect.

[0039] Optionally, combined Figure 2 As shown, the tunneling machine shovel plate and body connection device also includes a first baffle 6. One end of the first baffle 6 is connected to one of the two body frames 4, and the other end of the first baffle 6 is connected to one end of the pin 1.

[0040] Specifically, the first baffle 6 is connected to the body frame 4 on the right side by bolts, and the first baffle 6 is also connected to the right end face of the pin 1 by bolts.

[0041] Thus, by connecting one end of the first baffle 6 to one of the two body frames 4 and the other end of the first baffle 6 to one end of the pin 1, the first baffle 6 can limit the pin 1 under the support of the body frame 4, so as to prevent the pin 1 from falling out of the body bushing 3 and the shovel bushing 2.

[0042] Optionally, combined Figure 2 As shown, the shaft end of the pin 1 that connects to the first baffle 6 is provided with an eccentric threaded hole 11, and the eccentric threaded hole 11 is connected to the first baffle 6 by bolts.

[0043] Specifically, the eccentric threaded hole 11 refers to a threaded hole that does not coincide with the axis of the pin 1. The eccentric threaded hole 11 is located on the right end face of the pin 1 (i.e., the end face of the pin 1 facing the positive X-axis). The first baffle 6 is connected to the eccentric threaded hole 11 by bolts.

[0044] Thus, an eccentric threaded hole 11 is provided on the shaft end that is connected to the first baffle 6 via the pin 1. The eccentric threaded hole 11 is connected to the first baffle 6 by bolts. The eccentric threaded hole 11 can realize the threaded connection between the pin 1 and the first baffle 6, so that after the first baffle 6 is connected to the eccentric threaded hole 11, the limiting effect of the first baffle 6 on the pin 1 is guaranteed.

[0045] Optionally, combined Figure 2 As shown, a central threaded hole 12 is also provided on the shaft end where the pin 1 connects to the first baffle 6. The central threaded hole 12 is used to connect with the installation tool.

[0046] Specifically, the central threaded hole 12 refers to the threaded hole that coincides with the axis of the pin 1. The central threaded hole 12 and the eccentric threaded hole 11 mentioned above are both located on the right end face of the pin 1. The central threaded hole 12 can be threadedly connected to the installation tool, thereby facilitating the operator to insert the pin 1 into the body bushing 3 and the shovel bushing 2 using the installation tool.

[0047] Thus, a central threaded hole 12 is also provided on the shaft end that is connected to the first baffle 6 via the pin 1. The central threaded hole 12 is used to connect with the installation tool. The central threaded hole 12 can improve the connection position between the installation tool and the pin 1. Therefore, during the installation of the pin 1, the operator can quickly insert the pin 1 into the body bushing 3 and the shovel bushing 2 using the installation tool, thereby improving the installation efficiency of the pin 1.

[0048] Optionally, combined Figure 1 As shown, the tunneling machine shovel plate and body connection device also includes a second baffle 7. One end of the second baffle 7 is connected to the other of the two body frames 4, and the other end of the second baffle 7 is connected to the other shaft end of the pin 1.

[0049] Specifically, the second baffle 7 can be a steel plate. One end of the second baffle 7 is bolted to the main body frame 4 on the left side (facing the negative X-axis), and the other end of the second baffle 7 is connected to the shaft end of the main body frame 4 facing the left side in the pin 1.

[0050] Thus, by connecting one end of the second baffle 7 to the other of the two body frames 4, and the other end of the second baffle 7 to the other shaft end of the pin 1, the second baffle 7 can limit the pin 1 radially and axially under the support of the body frame 4, thereby improving the stability of the pin 1.

[0051] Optionally, combined Figure 1 As shown, a recessed platform 13 is provided on the shaft end that connects the pin 1 to the second baffle 7, and the recessed platform 13 is engaged with the second baffle 7.

[0052] Specifically, the recessed platform 13 is located at the left end of the pin 1 (i.e., the end of the pin 1 facing the negative X-axis). The recessed platform 13 can be obtained by milling the left end of the pin 1 after removing part of the material without affecting the structural strength of the pin 1. During installation, after the left end of the pin 1 extends from the left side of the body bushing 3, the second baffle 7 is locked inside the recessed platform 13. The second baffle 7 can limit the radial and axial movement of the pin 1.

[0053] Thus, a recessed platform 13 is provided on the shaft end that is connected to the second baffle 7 via the pin 1. The recessed platform 13 is engaged with the second baffle 7. The second baffle 7 can limit the pin 1 and can assist the first baffle 6 in improving the limiting effect of the pin 1.

[0054] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.

Claims

1. A device for connecting a tunneling machine shovel plate to its main body, characterized in that, It includes a pin (1), a shovel bushing (2) and two body bushings (3). The shovel bushing (2) is fitted on the pin (1) and is used to connect with the shovel ear seat (5) on the shovel. The inner surface of the shovel bushing (2) in contact with the pin (1) is provided with a first spiral annular oil reservoir (21). The first spiral annular oil reservoir (21) is connected to the oil injection pipe (51) on the shovel ear seat (5) through a lubrication hole that penetrates the shovel bushing (2) radially. Two body bushings (3) are respectively fitted on the pin (1) and located at both ends of the shovel bushing (2). The two body bushings (3) are respectively used to connect with the two body frames (4) of the tunneling machine. A second spiral annular oil storage groove (31) is provided on the inner surface of the body bushing (3) that contacts the pin (1). The second spiral annular oil storage groove (31) is connected to the first spiral annular oil storage groove (21).

2. The tunneling machine shovel and body connection device according to claim 1, characterized in that, A first annular groove (22) is provided on the outer surface of the shovel bushing (2) that contacts the shovel lug (5). The first annular groove (22) is connected to the oil injection pipe (51) and the lubrication hole.

3. The tunneling machine shovel and body connection device according to claim 1, characterized in that, A first sealing groove is provided on the inner surface of the body bushing (3). The first sealing groove is located at the end of the body bushing (3) away from the shovel bushing (2). A first sealing ring (32) is provided in the first sealing groove. The first sealing ring (32) is sealed to the pin (1).

4. The tunneling machine shovel and body connection device according to claim 1, characterized in that, The body bushing (3) is also provided with an annular boss (33), which is located at one end of the body bushing (3) near the shovel bushing. The annular boss (33) is provided with a second sealing groove, and a second sealing ring (34) is provided in the second sealing groove. The second sealing ring (34) is sealed to the shovel ear seat (5).

5. The tunneling machine shovel and body connection device according to claim 4, characterized in that, An annular notch (35) is also provided on the inner surface of the annular boss (33) that contacts the pin (1), and the annular notch (35) is connected to the second spiral annular oil storage groove (31).

6. The tunneling machine shovel and body connection device according to claim 1, characterized in that, It also includes a first baffle (6), one end of which is connected to one of the two body frames (4), and the other end of which is connected to one end of the pin (1).

7. The tunneling machine shovel and body connection device according to claim 6, characterized in that, The pin (1) is connected to the first baffle (6) by a eccentric threaded hole (11) on the shaft end, and the eccentric threaded hole (11) is connected to the first baffle (6) by bolts.

8. The tunneling machine shovel and body connection device according to claim 7, characterized in that, The pin (1) is connected to the first baffle (6) and a central threaded hole (12) is provided on the shaft end. The central threaded hole (12) is used to connect with the installation tool.

9. The tunneling machine shovel and body connection device according to claim 6, characterized in that, It also includes a second baffle (7), one end of which is connected to the other of the two body frames (4), and the other end of which is connected to the other shaft end of the pin (1).

10. The tunneling machine shovel and body connection device according to claim 9, characterized in that, A countersunk platform (13) is provided on the shaft end that connects the pin (1) to the second baffle (7), and the countersunk platform (13) is engaged with the second baffle (7).

Images