A drill bit changer

Abstract

The utility model discloses a kind of drill replacement device, more specifically relates to mine machinery, engineering construction technical field, including the hydraulic cylinder one fixed on the upper end of flat rail and mounting seat, the mounting seat upper end is rotatably installed with the rotating shaft that is penetrated downwards, the rotating shaft upper end is fixed with cam, the cam with the hydraulic cylinder one output end between being provided with connecting rod one, the rotating shaft lower end is fixed with the drill supporting mechanism.The utility model said a kind of drill replacement device, through the linkage structure of hydraulic cylinder one, cam, connecting rod one, and cooperate angle sensor, the accurate angle adjustment of drill supporting mechanism can be realized;Meanwhile, the cooperation of hydraulic cylinder two and connecting rod two in drill supporting mechanism, combined with pressure sensor, the stable clamping of drill rod and intensity control can be realized, the friction force with drill rod can be increased by the rubber block set in the inside of pincer claw, prevent drill rod from falling off;The pressure sensor inside rubber block can monitor clamping force in real time, guarantee the stability and security in the process of drill replacement.

Description

Technical Field

[0001] This utility model relates to the fields of mining machinery and engineering construction technology, and in particular to a drill bit replacement device. Background Technology

[0002] Traditional drill bit replacement operations often rely on manual labor. Due to the weight of the drill bits and the often confined, damp, or dusty working environments, manual replacement is not only labor-intensive and inefficient but also poses significant safety risks, easily leading to operator injuries. Furthermore, the precision of manual operation is difficult to guarantee, potentially resulting in improper drill bit installation, affecting the quality of subsequent work and the lifespan of the equipment. In addition, with the development of automation technology, traditional manual replacement methods can no longer meet the demands of efficient, safe, and precise operations in modern construction. Therefore, there is an urgent need for an automated drill bit replacement device to solve these problems. Utility Model Content

[0003] The main purpose of this utility model is to provide a tool replacement device that can effectively solve the problems of high labor intensity, low efficiency, poor safety and insufficient accuracy in traditional manual tool replacement.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A tool changing device includes a hydraulic cylinder fixed to the upper end of a horizontal rail and a mounting base. A downwardly extending shaft is rotatably mounted on the upper end of the mounting base. A cam is fixed to the upper end of the shaft. A connecting rod is provided between the cam and the output end of the hydraulic cylinder. A tool support mechanism is fixed to the lower end of the shaft.

[0006] Preferably, an angle sensor is provided between the rotating shaft and the mounting base.

[0007] Preferably, one end of the connecting rod is rotatably connected to the cam protrusion via a pin, and the other end is rotatably connected to the output end of the hydraulic cylinder via a pin.

[0008] Preferably, the rod support mechanism includes a vertical rod fixed to the lower end of the rotating shaft. The vertical rod has two symmetrical mounting plates at its front and rear ends. A hydraulic cylinder is fixed to the right side of the two mounting plates that are close to each other via an ear seat. A jaw assembly is provided on the left side of the two mounting plates that are close to each other. A connecting rod is provided between the output end of the hydraulic cylinder and the two jaws.

[0009] Preferably, a rubber block is provided on the inner side of the jaws, and a pressure sensor is also provided inside the rubber block.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] 1. This utility model, through the linkage structure of hydraulic cylinder one, cam, and connecting rod one, and in conjunction with an angle sensor, can achieve precise angle adjustment of the rod support mechanism; at the same time, the cooperation of hydraulic cylinder two and connecting rod two in the rod support mechanism, combined with a pressure sensor, can achieve stable clamping and force control of the rod, which is convenient for preset linkage logic, realizes fully automated operation, and improves operating efficiency and accuracy.

[0012] 2. The rubber block inside the clamping jaws increases the friction with the drill rod, preventing it from falling off. The pressure sensor inside the rubber block monitors the clamping force in real time, avoiding damage to the drill rod due to excessive clamping, thus ensuring stability and safety during drill replacement. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0014] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0015] Figure 3 This is a schematic diagram of the support mechanism of this utility model.

[0016] In the diagram: 1. Hydraulic cylinder one; 2. Mounting base; 3. Rotary shaft; 4. Cam; 5. Connecting rod one; 6. Supporting rod mechanism;

[0017] 61. Vertical rod; 62. Mounting plate; 63. Hydraulic cylinder II; 64. Clamping jaw assembly; 65. Connecting rod II. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0019] like Figures 1-3 As shown, a tool changing device includes a hydraulic cylinder 1 fixed to the upper end of a horizontal rail and a mounting base 2. A downwardly extending rotating shaft 3 is rotatably mounted on the upper end of the mounting base 2. A deep groove ball bearing is fitted between the rotating shaft 3 and the mounting base 2 to facilitate the smooth rotation of the rotating shaft 3. A cam 4 is fixed to the upper end of the rotating shaft 3. A connecting rod 5 is provided between the cam 4 and the output end of the hydraulic cylinder 1. A tool support mechanism 6 is fixed to the lower end of the rotating shaft 3.

[0020] To ensure the rotational accuracy of the rotating shaft 3, an angle sensor is installed between the rotating shaft 3 and the mounting base 2. The angle sensor can detect the rotational angle of the rotating shaft 3 to achieve angle adjustment of the rod support mechanism 6.

[0021] like Figure 1 and Figure 2As shown, one end of the connecting rod 5 is rotatably connected to the protruding part of the cam 4 via a pin, and the other end is rotatably connected to the output end of the hydraulic cylinder 1 via a pin. When the output end of the hydraulic cylinder 1 extends or retracts, the connecting rod 5 drives the cam 4 to rotate around the rotating shaft 3. At the same time, due to the fixed connection between the rotating shaft 3 and the cam 4, the rotating shaft 3 can rotate, thereby driving the support mechanism 6 to achieve angle adjustment.

[0022] like Figure 3 As shown, the rod support mechanism 6 includes a vertical rod 61 fixed to the lower end of the rotating shaft 3. Due to the design of the rotating shaft 3 being fixedly connected to the vertical rod 61, the rotating shaft 3 can drive the vertical rod 61 to rotate when it rotates. There are two mounting plates 62 symmetrically arranged at the front and rear ends of the vertical rod 61. A hydraulic cylinder 63 is fixed to the right side of the end of the two mounting plates 62 that is close to each other through an ear seat. A jaw assembly 64 is provided on the left side of the end of the two mounting plates 62 that is close to each other. The jaw assembly 64 is composed of two jaws in the shape of scissors. A connecting rod 65 is provided between the output end of the hydraulic cylinder 63 and the two jaws. The two ends of the connecting rod 65 are respectively hinged to the output end of the hydraulic cylinder 63 and the end of the jaws. The jaw assembly 64 is opened and closed by the extension and retraction of the hydraulic cylinder 63 to realize the clamping of the rod.

[0023] The jaw assembly 64 is composed of two scissor-shaped jaws, and the connecting rod 65 is rotatably connected to the output end of the hydraulic cylinder 63. This allows the jaws and the two connecting rods 65 to form a rhombus. When the output end of the hydraulic cylinder 63 extends, the pivot of the two jaws rotates, thus opening the jaws. When the output end of the hydraulic cylinder 63 retracts, the pivot of the two jaws rotates, thus closing the jaws, so that the jaw assembly 64 can grip the drill rod.

[0024] To prevent the drill rod from falling off, a rubber block is installed on the inside of the jaws, and a pressure sensor is also installed inside the rubber block. The rubber block can increase the friction between the jaws and the drill rod, and the pressure sensor can prevent the jaws from clamping too tightly.

[0025] The specific implementation method of this embodiment is as follows:

[0026] I. Equipment Installation

[0027] Fix hydraulic cylinder 1 and mounting base 2 to the preset position on the horizontal rail with bolts, connect the hydraulic lines of hydraulic cylinder 1 and hydraulic cylinder 2 to the control system (such as PLC), and perform a pressure test.

[0028] II. Angle Adjustment Operation

[0029] Start the control system and input the target angle (e.g., 30°);

[0030] After receiving a signal, hydraulic cylinder 1 extends / retracts, and pushes cam 4 to rotate around shaft 3 via connecting rod 5. Shaft 3 drives the chisel support mechanism 6 to rotate synchronously.

[0031] When the displacement sensor detects that the actual angle matches the target angle, hydraulic cylinder 1 locks up, completing the angle adjustment.

[0032] III. Drill Rod Clamping Operation

[0033] Hoist the drill rod between the jaw assembly 64, ensuring that the drill rod axis is aligned with the center of the jaws;

[0034] The control system sends a clamping signal, and the output end of hydraulic cylinder 263 extends, pushing the two jaws to rotate around the central pin shaft through connecting rod 265 until the anti-slip texture on the inner side of the jaws is in close contact with the chisel [the clamping force is fed back by the pressure sensor and stops after reaching the preset value].

[0035] When the rod is unloaded, the output end of hydraulic cylinder 263 retracts, and connecting rod 265 pulls the jaws open, allowing the rod to leave the clamping range.

[0036] III. Collaborative Work

[0037] Based on the operational requirements, the control system can be pre-programmed with the linkage logic of angle adjustment and clamping [such as first adjusting the angle to 45°, and then automatically clamping the drill rod] to achieve full automation of the process.

[0038] It should be noted that the specific installation methods, circuit connection methods, and control methods of the hydraulic cylinder, rotating shaft 3, and cam 4 in this utility model are all conventional designs, and will not be described in detail in this utility model.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A tool changing device, comprising a hydraulic cylinder (1) fixed to the upper end of a horizontal rail and a mounting base (2), characterized in that: The mounting base (2) has a downward-through rotating shaft (3) rotatably mounted on its upper end. A cam (4) is fixed on the upper end of the rotating shaft (3). A connecting rod (5) is provided between the cam (4) and the output end of the hydraulic cylinder (1). A rod support mechanism (6) is fixed on the lower end of the rotating shaft (3).

2. The tool changing device according to claim 1, characterized in that: An angle sensor is provided between the rotating shaft (3) and the mounting base (2).

3. The tool changing device according to claim 1, characterized in that: One end of the connecting rod (5) is rotatably connected to the protruding part of the cam (4) via a pin, and the other end is rotatably connected to the output end of the hydraulic cylinder (1) via a pin.

4. The tool changing device according to claim 1, characterized in that: The rod support mechanism (6) includes a vertical rod (61) fixed to the lower end of the rotating shaft (3). The vertical rod (61) has two symmetrical mounting plates (62) at its front and rear ends. A hydraulic cylinder (63) is fixed to the right side of the two mounting plates (62) that are close to each other by an ear seat. A jaw assembly (64) is provided on the left side of the two mounting plates (62) that are close to each other. A connecting rod (65) is provided between the output end of the hydraulic cylinder (63) and the two jaws.

5. A tool changing device according to claim 4, characterized in that: A rubber block is provided on the inner side of the jaws, and a pressure sensor is also provided inside the rubber block.

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