Transmission structure of multi-drill-bit punching device for expressway

Abstract

The utility model relates to the technical field of punching devices, and provides a transmission structure of a highway multi-drill-bit punching device, which comprises a rack and at least one driving mechanism, the driving mechanism comprises a rotating shaft and a main gear, and a plurality of punching mechanisms are arranged on the periphery of the driving mechanism. The punching mechanism comprises a transmission assembly, a drill bit assembly, a guide assembly and a pressing assembly. The transmission assembly comprises an auxiliary friction plate and an auxiliary gear, a through hole penetrating in the axial direction is formed in the auxiliary friction plate, the auxiliary friction plate is rotationally connected with the rack, and the auxiliary gear is fixedly installed on the auxiliary friction plate and meshed with the main gear; the drill bit assembly comprises a lifting rod, a main friction plate and a drill bit body, the lifting rod penetrates through the through hole, the main friction plate is fixedly installed on the lifting rod and corresponds to the auxiliary friction plate, and the drill bit body is in threaded connection with the lifting rod; the guide assembly is used for guiding the lifting rod; the pressing assembly is arranged on the lifting rod and used for enabling the main friction plate to press the auxiliary friction plate.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling devices, and particularly relates to a transmission structure of a multi-bit drilling device for highways. Background Art

[0002] An important step in highway bridge construction is to install guardrails on the highway. The guardrails often need to be drilled on the outer side of the enclosure at the edge of the highway bridge, and then the guardrails are fixed above the bridge. In order to improve the drilling efficiency, a multi-bit drilling device is generally used for drilling operations at present.

[0003] The existing multi-bit drilling devices have the following defects: 1. Each drill bit has a separate drive source, resulting in a complex overall structure and high cost. 2. When the drill bit drills into the embedded steel bars inside the guardrail, the resistance of the drill bit increases, and the transmission mechanism will get stuck, causing damage to the drill bit. Summary of the Utility Model

[0004] Aiming at the defects in the prior art, the purpose of the utility model is to provide a transmission structure of a multi-bit drilling device for highways, which has only one drive source and will not cause damage to the transmission mechanism and the drill bit.

[0005] To achieve the above purpose, the utility model is realized by the following technical solutions: A transmission structure of a multi-bit drilling device for highways, including a frame and at least one driving mechanism. The driving mechanism includes a rotating shaft and a main gear. A plurality of drilling mechanisms are arranged outside the driving mechanism. The drilling mechanism includes a transmission component, a drill bit component, a guiding component and a pressing component;

[0006] The transmission component includes a secondary friction plate and a secondary gear. A through hole axially penetrating is formed on the secondary friction plate. The secondary friction plate is rotatably connected with the frame. The secondary gear is fixedly installed on the secondary friction plate and meshes with the main gear;

[0007] The drill bit component includes a lifting rod, a main friction plate and a drill bit body. The lifting rod passes through the through hole. The main friction plate is fixedly installed on the lifting rod. The main friction plate corresponds to the secondary friction plate. The drill bit body is threadedly connected with the lifting rod;

[0008] The guiding component is used for guiding the lifting rod;

[0009] The pressing component is arranged on the lifting rod and is used for pressing the main friction plate against the secondary friction plate.

[0010] Further, the guiding component includes a guiding cylinder. The guiding cylinder is sleeved on the lifting rod and is in sliding contact with the lifting rod. The guiding cylinder is fixedly connected with the frame.

[0011] Furthermore, the pressing component includes an adjusting rod, a baffle plate, and a spring. The adjusting rod is slidably connected to the lifting rod. The baffle plate is fixedly installed on the adjusting rod. Two ends of the spring are respectively in contact with the baffle plate and the main friction plate.

[0012] Furthermore, the spring is sleeved on the adjusting rod.

[0013] Furthermore, the adjusting rod includes a first rod body and a second rod body. The first rod body is fixedly installed on the lifting rod and is slidably connected to the lifting rod. The second rod body is fixedly connected to the baffle plate and is also threadedly connected to the first rod body.

[0014] Furthermore, the number of the punching mechanisms is four.

[0015] The beneficial effects of the present utility model: For the transmission structure of a multi-bit punching device for highways provided by the present utility model, on the one hand, one driving mechanism can drive multiple punching mechanisms to work synchronously, with a simple structure and low cost; on the other hand, when the drill bit body drills into the embedded steel bars inside the guardrail, the resistance of the drill bit body increases, the drill bit body drives the lifting rod, the main friction plate, and the pressing component to move upward, the friction between the main friction plate and the secondary friction plate will decrease and then slip occurs, and the secondary friction plate and the secondary gear will rotate idly, so that the transmission mechanism will not be stuck, and further damage to the drill bit body is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a front view structural diagram of the present utility model;

[0017] Figure 2 is a three-dimensional structural diagram of the present utility model;

[0018] Figure 3 is an internal structural diagram of the present utility model;

[0019] Figure 4 is Figure 3 an enlarged structural diagram of part A in

[0020] Reference numerals: 10-frame, 20-motor, 30-driving mechanism, 31-rotating shaft, 32-main gear, 40-transmission component, 41-secondary friction plate, 42-secondary gear, 50-drill bit component, 51-lifting rod, 52-main friction plate, 53-drill bit body, 60-guiding component, 61-guiding cylinder, 70-pressing component, 71-baffle plate, 72-spring, 73-first rod body, 74-second rod body, 80-chain transmission mechanism. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In order to make the technical means, creative features, achieved purposes and functions realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] In this application, unless otherwise clearly defined and limited, the terms "connection" and "fixation" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0023] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "horizontal", "top", "bottom", "upper", "lower", "inner" and "outer" etc. is based on the orientation or positional relationship shown in the drawings, and 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 understood as a limitation to the present utility model.

[0024] In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. In the description of the present utility model, "a plurality of" means two or more, unless otherwise clearly and specifically defined.

[0025] As Figures 1 - 4 shown, the present utility model provides a transmission structure of a multi-bit drilling device for highways, including a frame 10, a motor 20 and at least one driving mechanism 30. The driving mechanism 30 includes a rotating shaft 31 and a main gear 32. Both ends of the rotating shaft 31 are rotatably connected to the frame 10, and the main gear 32 is fixedly installed on the rotating shaft 31. The motor 20 is fixedly installed on the frame 10 and controls the rotation of the rotating shaft 31 through a chain transmission mechanism 80. The above contents are all prior arts, and the specific structures will not be described in detail here.

[0026] A plurality of drilling mechanisms are arranged on the periphery of the driving mechanism 30. The drilling mechanism includes a transmission assembly 40, a drill bit assembly 50, a guiding assembly 60 and a pressing assembly 70.

[0027] The transmission assembly 40 includes a secondary friction plate 41 and a secondary gear 42. The secondary friction plate 41 is provided with an axially penetrating through hole, and the secondary friction plate 41 is rotatably connected to the frame 10. The secondary gear 42 is fixedly installed on the secondary friction plate 41 and meshes with the main gear 32.

[0028] The drill bit assembly 50 includes a lifting rod 51, a main friction plate 52, and a drill bit body 53. The lifting rod 51 passes through the through hole. The main friction plate 52 is fixedly installed on the lifting rod 51. The main friction plate 52 corresponds to the secondary friction plate 41. The drill bit body 53 is threadedly connected to the lifting rod 51 to facilitate the replacement of the drill bit body 53.

[0029] The guiding assembly 60 is used to guide the lifting rod 51 so that the lifting rod 51 can be more stable when lifting and lowering.

[0030] The pressing assembly 70 is arranged on the lifting rod 51 and is used to press the main friction plate 52 against the secondary friction plate 41.

[0031] In the initial state, due to the action of the pressing assembly 70, the main friction plate 52 is pressed against the secondary friction plate 41.

[0032] The specific working process of the present utility model is as follows: When the motor 20 is started to drive the rotating shaft 31 to rotate, under the transmission of the main gear 32 and the secondary gear 42, the secondary friction plate 41 will rotate synchronously. Since the main friction plate 52 is pressed against the secondary friction plate 41 at this time, the main friction plate 52 will also drive the lifting rod 51 and the drill bit body 53 to rotate synchronously, so as to perform the drilling operation.

[0033] The beneficial effects of the present utility model are as follows: On the one hand, one driving mechanism 30 can drive multiple drilling mechanisms to work synchronously, with a simple structure and low cost; on the other hand, when a certain drill bit body 53 drills into the embedded steel bars inside the guardrail, the resistance of the drill bit body 53 increases, and the drill bit body 53 will drive the lifting rod 51 and the pressing assembly 70 to move upward. The friction force between the main friction plate 52 and the secondary friction plate 41 will decrease and then slip, so that the secondary friction plate 41 and the secondary gear 42 will rotate idly, and the transmission mechanism will not be stuck, thereby avoiding the damage of the drill bit body 53.

[0034] In one embodiment, the guiding assembly 60 includes a guiding cylinder 61. The guiding cylinder 61 is sleeved on the lifting rod 51 and is in sliding contact with the lifting rod 51. The guiding cylinder 61 is fixedly connected to the frame 10.

[0035] The design of the guiding cylinder 61 can guide the movement of the lifting rod 51, improving the stability of the present utility model.

[0036] In one embodiment, the pressing assembly 70 includes an adjusting rod, a baffle 71, and a spring 72. The adjusting rod is slidably connected to the lifting rod 51. The baffle 71 is fixedly installed on the adjusting rod. The two ends of the spring 72 are respectively in contact with the baffle 71 and the main friction plate 52.

[0037] In the initial state, the spring 72 applies a downward pressure on the main friction plate 52. Since the main friction plate 52 is fixedly connected to the lifting rod 51 and the adjusting rod is slidably connected to the lifting rod 51, the main friction plate 52 will be pressed tightly against the secondary friction plate 41.

[0038] When a certain drill bit body 53 drills into the embedded steel bars inside the guardrail, the resistance of the drill bit body 53 increases, and the drill bit body 53 will drive the lifting rod 51 and the main friction plate 52 to move upward. The pressure of the spring 72 on the main friction plate 52 will decrease, and the frictional force between the main friction plate 52 and the secondary friction plate 41 will decrease and then slip occurs. In this way, the secondary friction plate 41 and the secondary gear 42 will rotate idly, and the transmission mechanism will not be stuck, thereby avoiding damage to the drill bit body 53.

[0039] In one embodiment, the spring 72 is sleeved on the adjusting rod to prevent the spring 72 from bending and further improve the stability of the present invention.

[0040] In one embodiment, the adjusting rod includes a first rod body 73 and a second rod body 74. The first rod body 73 is fixedly installed on the lifting rod 51 and is slidably connected to the lifting rod 51. The second rod body 74 is fixedly connected to the baffle 71 and is also threadedly connected to the first rod body 73.

[0041] Since the second rod body 74 is threadedly connected to the first rod body 73, when the staff rotates the baffle 71, the first rod body 73 will also rotate synchronously. In this way, the distance between the baffle 71 and the main friction plate 52 will change, and the length of the spring 72 will also change accordingly. In this way, the frictional force between the main friction plate 52 and the secondary friction plate 41 in the initial state can be adjusted, which is convenient for the staff to adjust according to needs.

[0042] In one embodiment, the number of the drilling mechanisms is four.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic features of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention.

[0044] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A transmission structure of a highway multi-drill drilling device, comprising a frame and at least one driving mechanism, wherein the driving mechanism comprises a rotating shaft and a main gear, and is characterized in that: A plurality of punching mechanisms are arranged on the periphery of the driving mechanism, and the punching mechanisms include a transmission assembly, a drill assembly, a guide assembly and a pressing assembly; The transmission assembly comprises a secondary friction plate and a secondary gear, wherein the secondary friction plate is provided with a through hole penetrating along the axial direction, the secondary friction plate is rotatably connected to the frame, and the secondary gear is fixedly mounted on the secondary friction plate and meshes with the main gear; The drill bit assembly comprises a lifting rod, a main friction plate and a drill bit body, the lifting rod passes through the through hole, the main friction plate is fixedly mounted on the lifting rod, the main friction plate corresponds to the auxiliary friction plate, and the drill bit body is threadedly connected to the lifting rod; The guide assembly is used to guide the lifting rod; The clamping assembly is arranged on the lifting rod and is used to make the primary friction plate press the secondary friction plate.

2. The transmission structure of a highway multi-drill drilling device according to claim 1, characterized in that: The guide assembly comprises a guide cylinder, the guide cylinder is sleeved on the lifting rod and is in sliding contact with the lifting rod, and the guide cylinder is fixedly connected to the frame.

3. The transmission structure of a highway multi-drill drilling device according to claim 1, characterized in that: The clamping assembly comprises an adjusting rod, a baffle and a spring. The adjusting rod is slidably connected to the lifting rod. The baffle is fixedly mounted on the adjusting rod. Two ends of the spring are in contact with the baffle and the main friction plate respectively.

4. The transmission structure of a highway multi-drill drilling device according to claim 3, characterized in that: The spring is sleeved on the adjusting rod.

5. The transmission structure of a highway multi-drill drilling device according to claim 4, characterized in that: The adjusting rod comprises a first rod body and a second rod body, wherein the first rod body is fixedly mounted on the lifting rod and slidably connected to the lifting rod, and the second rod body is fixedly connected to the baffle and is also threadedly connected to the first rod body.

6. The transmission structure of a highway multi-drill drilling device according to claim 1, characterized in that: The number of the punching mechanisms is four.

Images