Convenient positioning clamp for metal ore sampling

Abstract

The invention relates to the technical field of ore detection auxiliary equipment, and discloses a convenient positioning clamp for metal ore sampling. The clamp comprises a machine body, a telescopic supporting column and a drill bit. A clamping mechanism is arranged in the middle of the machine body, a hydraulic cylinder is used for driving a push plate to slide along a limiting rod through a push block and a transmission plate, a multi-connecting-rod transmission assembly is used for driving a clamping plate to move centripetally so as to clamp ore, a positioning mechanism is installed in a supporting column and comprises a lifting component internally provided with an air cylinder and a fixed supporting rod, and the air cylinder drives the push block to move horizontally and drives the transmission plate to rotate around the limiting column. The clamping columns extend outwards and are embedded into the clamping grooves in the inner walls of the supporting columns, and rigid connection between the internal lifting component and the external supporting columns is achieved. Through a double locking mechanism, self-adaptive clamping of ore and rapid locking of the height of the drill bit are achieved, the problems of sampling shaking and shifting are effectively solved, and the sampling precision and the equipment stability are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of auxiliary equipment for ore testing, and in particular to a convenient positioning fixture for metal ore sampling. Background Technology

[0002] In the development and utilization of metallic mineral resources, ore sampling is a crucial step in analyzing ore composition, grade, and physical properties. To obtain representative samples, specialized sampling equipment is typically used to drill or cut the collected raw metallic ore. Due to the high hardness and irregular shape of metallic ores, the sampling process is often accompanied by significant mechanical vibration and cutting resistance, requiring the sampling equipment to possess extremely high structural stability and positioning accuracy.

[0003] Existing ore sampling equipment typically includes a basic clamping platform to hold ores of varying shapes, and a drill bit mounted via columns or supports to adjust the drill bit's feed height to accommodate ores of different sizes. However, in practical use, it has been found that while existing equipment can secure the ore using external clamps, there are significant design flaws in the support structure for adjusting the drill bit's height. Specifically, existing support columns often use simple sleeve sliding or bolt fastening methods to adjust and maintain the drill bit's height. This connection method often proves insufficiently rigid when facing the high-frequency, strong vibrations generated during drilling into high-hardness metallic ores.

[0004] Especially at the moment the drill bit contacts the ore surface and during drilling, the enormous reaction force can easily cause loosening within the support structure, or lead to unexpected longitudinal displacement or swaying of the drill bit assembly within the support column. This instability in the support structure not only causes sampling position deviations, severely affecting the accuracy of sampling data, but also easily leads to drill bit breakage or damage, posing significant safety hazards. Currently, there is a lack of an integrated device that can both achieve self-adaptive and secure clamping of the ore and quickly and rigidly lock the relative position of the drill bit support assembly through an internal automated mechanical structure.

[0005] Therefore, this invention proposes a convenient positioning fixture for metal ore sampling to address the shortcomings of existing technologies. Summary of the Invention

[0006] In view of the problems in the existing technology, when metal ore sampling devices are used for drilling operations on high-hardness ores, the rigidity of the drill bit support adjustment structure is insufficient, and there is a lack of an internal locking mechanism that can quickly and stably lock the height position of the drill bit. This causes the support components to easily shake violently or undergo unexpected longitudinal displacement during the sampling process, which seriously affects the sampling accuracy and may even damage the drill bit. The present invention aims to provide a convenient positioning fixture for metal ore sampling with an improved structure that can effectively solve the above problems.

[0007] This invention provides a convenient positioning fixture for metal ore sampling, comprising: a body, a support column, a drill bit, a clamping mechanism, and a positioning mechanism; wherein, the support column is vertically installed in the lower area of ​​the body, the drill bit is fixedly connected to the bottom end of the support column, the clamping mechanism is arranged at the middle platform of the body, and the positioning mechanism is embedded in the inner cavity of the support column.

[0008] The clamping mechanism has a multi-stage linkage transmission structure, which includes a support plate, a hydraulic cylinder, a limit rod, a push block, a transmission plate, a push plate, a transmission assembly, and a clamping plate. The hydraulic cylinder is fixed to the side of the support plate, and the push plate is slidably sleeved on the limit rod. The output power of the hydraulic cylinder is transmitted to the push plate through the push block and the transmission plate in sequence. The push plate then drives the clamping plate to perform a centripetal clamping action through the transmission assembly.

[0009] Furthermore, the positioning mechanism includes a support column, a cylinder, a second push block, a limiting column, a support rod, a second transmission plate, a second push plate, and a locking column; the support rod is vertically fixed to the inner wall of the support column, and the limiting column is connected to the bottom end of the support rod; the cylinder pushes the second push block to translate along a preset guide path, causing the hinged second transmission plate to rotate around the limiting column, thereby pushing the second push plates and the locking column on both sides to extend outward, so that the locking column is embedded in the preset positioning slot in the inner wall of the support column.

[0010] Preferably, the transmission assembly adopts a multi-link linkage design, consisting of link one, link two, and link three connected in sequence by hinges. Link one is connected to push plate one, and link three is connected to clamping plate. By changing the angles between the links, the linear displacement of push plate one is converted into a powerful clamping motion of the clamping plate. The linear power output by the hydraulic cylinder does not act directly on push plate one, but is transmitted through transmission plate one as an intermediate medium. Transmission plate one adjusts the direction of force, and in conjunction with the guiding action of the limit rod, ensures the stability of push plate one during movement and prevents jamming.

[0011] Preferably, the translational motion of the push block two under the drive of the cylinder is converted into radial expansion force through the lever rotation effect of the transmission plate two. The structure utilizes the principle of force amplification, allowing the cylinder to achieve a large locking force at the locking post end with only a small output thrust. The outer shape of the locking post fits tightly with the inner shape of the positioning groove, forming a rigid locking fit. This fit directly restricts the vertical degree of freedom of the support column, thereby ensuring the high stability of the drill bit during drilling operations at a physical level.

[0012] Preferably, the support rod and the limiting post together constitute the rigid support foundation inside the positioning mechanism. The limiting post, serving as the rotation limiting foundation for the transmission plate two, is made of high-strength material to withstand the mechanical reaction force generated during locking and prevent deformation of the mechanism. An anti-slip structure is fixedly provided on the clamping surface of the clamping plate facing the ore. This structure increases the coefficient of friction between the clamp and the ore surface, preventing the ore from falling off during drilling vibrations, while also buffering the clamping force to protect the integrity of the ore sample.

[0013] Preferably, all connecting rods in the transmission assembly are hinged using wear-resistant pins and lubricated bushings to reduce wear under high-frequency use and improve the overall mechanical life and smoothness of the mechanism. The support column is a hollow sleeve structure with multiple positioning slots evenly spaced along the axial direction on its inner wall. Combined with a threaded, detachable drill bit, the device can adapt to the sampling needs of ores of different heights and sizes.

[0014] The present invention has the following beneficial effects: 1. This invention, by setting up a transmission component and clamping plate driven by a hydraulic cylinder and adopting a multi-link linkage structure to convert linear motion into centripetal clamping motion, solves the problem that the existing sampling device has a single clamping force and is difficult to adapt to different sizes of ores, and achieves the technical effect of adaptive, high-strength and stable clamping of ore samples.

[0015] 2. This invention, by setting a cylinder-driven locking structure inside the support column, utilizes the rotation of the transmission plate and the radial expansion of the push plate to achieve the locking engagement between the locking column and the positioning slot on the inner wall of the support column. This solves the problem that the support column of existing sampling equipment lacks a reliable and fast position locking mechanism and is prone to axial displacement during drilling. It achieves the technical effect of fast and rigid locking of the support column at any selected height.

[0016] 3. This invention integrates the clamping mechanism and the positioning mechanism on the same sampling platform, forming a dual positioning mechanism of external clamping and internal axial locking. This solves the problem that a single mechanism cannot completely eliminate the instability of ore and equipment, and achieves the technical effect of significantly improving the overall stability and sampling accuracy of metal ore sampling.

[0017] 4. This invention solves the problem that uneven force may cause component deformation or failure during operation of the positioning mechanism by setting support rods and limiting columns as rigid support and rotation limiting foundations for the positioning mechanism, thereby achieving the technical effect of ensuring the accuracy and reliability of the positioning mechanism during transmission.

[0018] 5. This invention, by employing a hydraulic cylinder to provide clamping power and a pneumatic cylinder to provide positioning and locking power, achieves the cooperation of two power sources, solving the problems of low operating efficiency or insufficient clamping force that may exist when using only mechanical or single drive methods, and achieving the technical effects of convenient operation, fast locking and large clamping force. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of a convenient positioning fixture for metal ore sampling proposed in this invention; Figure 2 This is a schematic diagram of the limiting rod of a convenient positioning clamp for metal ore sampling proposed in this invention; Figure 3 This is a schematic diagram of the connecting rod three of a convenient positioning fixture for metal ore sampling proposed in this invention. Figure 4 This is a schematic diagram of the push block of a convenient positioning fixture for metal ore sampling proposed in this invention. Figure 5 This is a schematic diagram of the clamping post of a convenient positioning fixture for metal ore sampling proposed in this invention. Figure 6 This is a schematic diagram of the transfer plate two of a convenient positioning fixture for metal ore sampling proposed in this invention.

[0020] Legend: 1. Drill bit; 2. Support column; 3. Machine body; 4. Clamping mechanism; 41. Hydraulic cylinder; 42. Push block one; 43. Transmission plate one; 44. Push plate one; 45. Transmission assembly; 451. Connecting rod one; 452. Connecting rod two; 453. Connecting rod three; 46. Clamping plate; 47. Limiting rod; 48. Support plate; 5. Positioning mechanism; 51. Cylinder; 52. Push block two; 53. Limiting column; 54. Support rod; 55. Transmission plate two; 56. Push plate two; 57. Clamping column. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0022] Example: Reference Figures 1 to 6 This invention provides a convenient positioning clamp for metal ore sampling, which aims to solve the problem that existing sampling devices lack a precise and quick mechanism for locking the height or position of the drill bit or support structure after clamping and fixing the ore, which leads to easy shaking or longitudinal displacement during the sampling process.

[0023] The convenient positioning fixture for metal ore sampling includes a body 3, a support column 2, a drill bit 1, a clamping mechanism 4, and a positioning mechanism 5. The support column 2 is vertically installed in the lower area of ​​the body 3 and serves as the main load-bearing and feeding carrier of the entire sampling platform. The drill bit 1 is fixedly connected to the bottom end of the support column 2 and is used to perform ore sampling or drilling operations. The clamping mechanism 4 is arranged in the middle platform of the body 3 and is used to adaptively and firmly clamp ores of different sizes. The positioning mechanism 5 is embedded in the inner cavity of the support column 2 and is used to lock the positional stability of the sampling equipment during operation.

[0024] The clamping mechanism 4 is the core of this device for fixing ore. It includes a support plate 48, a hydraulic cylinder 41, a limiting rod 47, a push block 42, a transmission plate 43, a push plate 44, a transmission assembly 45, and a clamping plate 46. The support plate 48 is fixedly connected to the surface of the middle platform of the machine body 3. The limiting rod 47 passes laterally through the guide hole reserved in the support plate 48 to provide a guide reference for the moving parts. The hydraulic cylinder 41 is fixedly connected to one side of the support plate 48 as a power source. The push plate 44 is slidably sleeved on the limiting rod 47 and slides back and forth along the axial direction of the limiting rod 47. The output end of the hydraulic cylinder 41 pushes and connects to the push block 42. One end of the push block 42 is hinged to the transmission plate 43, and the other end of the transmission plate 43 is fixedly connected to the push plate 44. The power of the hydraulic cylinder 41 is converted into the linear motion of the push plate 44 on the limiting rod 47 through the transmission of the push block 42 and the transmission plate 43.

[0025] The transmission assembly 45 is the core transmission component of the clamping mechanism 4. It is composed of connecting rod 1 451, connecting rod 2 452 and connecting rod 3 453 connected in sequence. Push plate 1 44 is hinged to one end of connecting rod 1 451, and the end of connecting rod 3 453 is fixedly connected to the clamping plate 46. Connecting rod 1 451, connecting rod 2 452 and connecting rod 3 453 together form a multi-link linkage structure, which is used to convert the linear motion of push plate 1 44 into the centripetal clamping motion of clamping plate 46, and finally realize the reliable clamping of ore sample.

[0026] The positioning mechanism 5 includes a support column 2, a cylinder 51, a second push block 52, a limiting post 53, a support rod 54, a second transmission plate 55, a second push plate 56, and a locking post 57. The support rod 54 is vertically fixed to the inner wall of the support column 2, and the limiting post 53 is vertically fixed to the bottom end of the support rod 54. Together, they form the rigid support foundation of the positioning mechanism 5 and the rotation limiting foundation of the second transmission plate 55. The cylinder 51 is fixedly installed on the inner side of the support column 2, and its output end pushes the second push block 52. The second push block 52 moves along a preset guide path, and through the cooperation of the second transmission plate 55 and the second push plate 56, it finally drives the locking post 57 to extend, thereby locking the relative position between the ground and the external support column 2. The support plate 48 serves as the base of the clamping mechanism 4 and is fixedly connected to the surface of the middle platform of the machine body 3 by bolts or welding at its bottom. The limiting rod 47 passes laterally through a pre-drilled guide hole on the support plate 48 and is fixed to the support plate 48 by fasteners at both ends. Its function is to provide precise guidance and limitation for the movement of the push plate 44. The push plate 44 slides around the outer circumference of the limiting rod 47 and reciprocates along the axial direction on it. The hydraulic cylinder 41 is fixedly connected to one side of the support plate 48. The piston rod output end of the hydraulic cylinder 41 pushes and connects to the push block 42. One end of the push block 42 is hinged to the transmission plate 43 by a pin, and the other end of the transmission plate 43 is fixedly connected to the push plate 44 by a pin or bolt. When the hydraulic cylinder 41 is started, it outputs… The linear power is converted into the smooth linear motion of the push plate 44 on the limit rod 47 through the intermediate transmission action of the push block 42 and the transmission plate 43. The transmission assembly 45 is composed of the connecting rod 451, the connecting rod 452 and the connecting rod 453 connected in sequence by hinges. The push plate 44 is hinged to one end of the connecting rod 451, and the end of the connecting rod 453 is fixedly connected to the clamping plate 46. The connecting rods 451, 452 and 453 are all connected by pin hinges. This multi-link structure can convert the horizontal linear displacement of the push plate 44 into the centripetal synchronous clamping action of the clamping plate 46, so as to achieve a firm fixation of the ore sample. The clamping surface of the clamping plate 46 is preferably provided with an anti-slip structure to increase friction and protect the ore surface when clamping the ore.

[0027] The support rod 54 is vertically fixed to the inner wall of the support column 2 in a sliding fit. The limiting column 53 is fixedly connected to the bottom end of the support rod 54 in the vertical direction. The support rod 54 and the limiting column 53 together form the rigid support foundation of the positioning mechanism 5, which is used to withstand the reaction force generated when the cylinder 51 starts and the locking column 57 locks. The lower part of the limiting column 53 serves as the rotation limiting foundation of the transmission plate 2 55, providing a stable fulcrum for the rotation of the transmission plate 2 55, ensuring that the transmission plate 2 55 can accurately convert the translational force of the push block 2 52 into radial expansion force. The support column 2 is a hollow sleeve structure, and its inner wall has several equally spaced positioning slots arranged along the axial direction for the locking column 57 to be embedded and locked.

[0028] In the transmission assembly 45, connecting rods 451, 452, and 453 are all hinged using wear-resistant pins, and lubricating bushings are preferably provided at each hinge point. The pin hinges enable precise linkage of multiple links, while the lubricating bushings significantly reduce mechanical friction loss during transmission, effectively improving the response speed and service life of the clamping mechanism 4. The outer end shape of the locking pin 57 precisely matches the shape of the pre-set positioning groove on the inner wall of the support column 2. When the cylinder 51 drives the locking pin 57 to extend and fully embed into the positioning groove, a rigid connection is achieved between the locking pin 57 and the positioning groove through a stable locking engagement. This locking method offers the technical advantages of high load-bearing capacity and high positioning accuracy. Both the support rod 54 and the limiting post 53 are made of high-strength, high-rigidity metal materials, forming a stable triangular or rectangular structure. This ensures that the rigid support base they together constitute can effectively resist the vibration and reaction force generated when the drill bit 1 is working. The limiting post 53 provides a unique and stable rotational limiting base for the transmission plate 2 55, preventing axial or radial deflection of the transmission plate 2 55 during rotation. The drill bit 1 is detachably installed at the bottom end of the support post 2 via a threaded connection. This detachable connection method allows users to replace different models or worn drill bits 1 according to different ore hardness or sampling requirements. The support post 2 itself is a hollow sleeve structure, with several equally spaced, uniformly shaped and sized positioning slots on its inner wall along the axial direction, so that the positioning mechanism 5 can reliably achieve multi-level locking at different height positions. The power supply system of the hydraulic cylinder 41 and the pneumatic cylinder 51 is electrically connected to the control module on the machine body 3, which can achieve precise control over the magnitude of the clamping force and the start and stop of the positioning action, ensuring that the clamping force can firmly fix the ore without crushing it, while ensuring the rapid completion of the positioning action.

[0029] The implementation principle of this application embodiment is as follows: With the body 3 as the installation base, the support column 2 is vertically mounted in the lower area of ​​the body 3, the drill bit 1 is connected to the bottom end of the support column 2, the clamping mechanism 4 is arranged in the middle platform of the body 3, and the positioning mechanism 5 is embedded in the inner cavity of the support column 2.

[0030] The support plate 48 of the clamping mechanism 4 is fixed on the surface of the middle platform of the machine body 3. The limiting rod 47 passes through the reserved guide hole of the support plate 48 laterally. The push plate 44 is sleeved on the limiting rod 47. When it is necessary to clamp the ore, the hydraulic cylinder 41 installed on one side of the support plate 48 is started. Its output end pushes the push block 42 to move horizontally. The push block 42 is hinged to one end of the transmission plate 43. The other end of the transmission plate 43 is connected to the push plate 44. The power is transmitted to the push plate 44 through the transmission plate 43. The push plate 44 slides along the axial direction of the limiting rod 47. The push plate 44 is hinged to the connecting rod 451 of the transmission assembly 45. The connecting rod 451, the connecting rod 452, and the connecting rod 453 are linked in sequence. The end of the transmission assembly 45 is connected to the clamping plate 46. As the transmission assembly 45 moves, the clamping plate 46 gathers towards the middle and finally clamps the ore to complete the positioning.

[0031] When ore positioning is to be completed, cylinder 51 is energized and activated. Its output end pushes push block 2 52 to move along the preset guide path inside the support column 2. Support rod 54 is vertically fixed to the top inner wall of the cavity inside the support column 2. Limiting column 53 is vertically connected to the bottom end of support rod 54. Together, they form the rigid support and rotation limiting foundation of positioning mechanism 5. Since the middle part of transmission plate 2 55 is hinged to push block 2 52, and transmission plate 2 55 uses the lower part of limiting column 53 as the rotation fulcrum, the translational force of push block 2 52 will drive transmission plate 2 55 to rotate. The second transmission plate 55 rotates synchronously around the hinge point of the limiting post 53. When the second transmission plate 55 rotates, its two ends will synchronously push the push plates 56 on both sides to move towards the inner wall of the support column 2. The push plates 56 will drive the outer locking post 57 to move closer to the inner wall of the support column 2. The locking post 57 is embedded in the positioning slot of the inner wall of the support column 2. Through the locking and engaging of the locking post 57 and the slot, the relative position of the support column 2 and related components is locked. Finally, in conjunction with the drill bit 1 at the bottom, the ore is accurately positioned, ensuring the stability of subsequent processing operations.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A convenient positioning fixture for metal ore sampling, comprising a body (3), a support column (2), a drill bit (1), a clamping mechanism (4), and a positioning mechanism (5), wherein the support column (2) is vertically installed in the lower region of the body (3), the drill bit (1) is fixedly connected to the bottom end of the support column (2), the clamping mechanism (4) is arranged at the middle platform of the body (3), and the positioning mechanism (5) is embedded in the inner cavity of the support column (2); Its features are, The clamping mechanism (4) includes a support plate (48), a hydraulic cylinder (41), a limiting rod (47), a push block (42), a transmission plate (43), a push plate (44), a transmission assembly (45), and a clamping plate (46). The support plate (48) is fixedly connected to the surface of the middle platform of the machine body (3). The limiting rod (47) passes laterally through the guide hole reserved in the support plate (48). The hydraulic cylinder (41) is fixedly connected to one side of the support plate (48). The push plate (44) is slidably sleeved on the limiting rod (47) and slides back and forth along the axial direction of the limiting rod (47).

2. The convenient positioning fixture for metal ore sampling according to claim 1, characterized in that, The output end of the hydraulic cylinder (41) pushes and connects to the push block (42). One end of the push block (42) is hinged to the transmission plate (43), and the other end of the transmission plate (43) is fixedly connected to the push plate (44). The push plate (44) is driven by the connecting rod (451), connecting rod (452) and connecting rod (453) in the transmission assembly (45) in sequence. One end of the connecting rod (451) is hinged to the push plate (44), the other end of the connecting rod (451) is hinged to the connecting rod (452), and the other end of the connecting rod (452) is hinged to the connecting rod (453). The end of the connecting rod (453) is fixedly connected to the clamping plate (46). The connecting rod (451), the connecting rod (452) and the connecting rod (453) form a multi-link linkage structure through the pin.

3. The convenient positioning fixture for metal ore sampling according to claim 1, characterized in that, The positioning mechanism (5) includes the support column (2), cylinder (51), push block two (52), limiting column (53), support rod (54), transmission plate two (55), push plate two (56), and locking column (57). The cylinder (51) is fixedly installed on the inner side of the support column (2). The output end of the cylinder (51) pushes and connects to the push block two (52). The support rod (54) is vertically fixed to the inner wall of the support column (2). The limiting column (53) is along the... The bottom end of the support rod (54) is fixedly connected in the vertical direction. The middle part of the transmission plate two (55) is hinged to the push block two (52). The transmission plate two (55) uses the lower part of the limiting column (53) as the rotation fulcrum. The two ends of the transmission plate two (55) push the push plate two (56) on both sides respectively. The outer side of the push plate two (56) is fixedly connected to the locking column (57). The locking column (57) is embedded in the positioning slot preset in the inner wall of the support column (2).

4. The convenient positioning fixture for metal ore sampling according to claim 3, characterized in that, The outer end shape of the card post (57) is adapted to the shape of the positioning slot preset on the inner wall of the support post (2).

5. The convenient positioning fixture for metal ore sampling according to claim 3, characterized in that, The support rod (54) and the limiting post (53) are made of high-strength metal material, and together they constitute the rigid support base of the positioning mechanism (5).

6. The convenient positioning fixture for metal ore sampling according to claim 1, characterized in that, The clamping surface (46) facing the ore is fixedly provided with an anti-slip structure.

7. The convenient positioning fixture for metal ore sampling according to claim 2, characterized in that, The first connecting rod (451), the second connecting rod (452), and the third connecting rod (453) in the transmission assembly (45) are all hinged by wear-resistant pins, and each hinge is provided with a lubricating bushing.

8. The convenient positioning fixture for metal ore sampling according to claim 1, characterized in that, The drill bit (1) is detachably installed at the bottom of the support column (2) by means of a threaded connection. The support column (2) itself is a hollow sleeve structure, and its inner wall is provided with a number of equally spaced positioning slots along the axial direction.

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