Automatic rod connection device for rock drilling rig

Abstract

The present invention relates to the technical field of rock drilling construction equipment, and specifically discloses an automatic rod connecting device for a rock drilling trolley, comprising a drilling arm and a feed assembly, a loading assembly and a guide assembly installed on the drilling arm; the guide assembly comprises a guide part and a limiting structure, a guide groove is provided on the guide part, the limiting structure limits the unidirectional rotation of the drill rod, the feed assembly is slidably matched with the drilling arm, and the feed assembly rotates to push the drill rod to move; the loading assembly comprises a storage groove, a bracket and a driving part, there are two storage grooves, the two storage grooves are relatively arranged at both ends of the length of the drilling arm, the two ends of the drill rod are slidably matched with the two storage grooves, the lower end of the storage groove is a loading position, and there is a drill rod in the loading position at the same time, the driving part drives the bracket to move longitudinally and lifts the drill rod at the loading position to move upward, and the rod connecting device of the present invention is convenient for automatic rod connecting operation.

Description

Technical Field

[0001] The invention relates to the technical field of rock drilling construction equipment, and in particular to an automatic rod connecting device for a rock drilling trolley. Background Art

[0002] A drilling rig is a heavy-duty mechanical equipment used in underground mining. It mainly uses a drilling arm and a drill rod to drill holes of a certain diameter and depth in the rock to prepare for subsequent blasting or pneumatic mining activities. When the drilling rig is drilling, if the drilling depth exceeds the length of a single drill rod, in order to achieve deeper drilling requirements, it is necessary to connect the rods. Connecting the rods by manual operation is time-consuming, inefficient and labor-intensive.

[0003] The patent application document with publication number CN109488231A discloses an automatic rod connecting mechanism for a rock drilling trolley and a rock drilling trolley, the rod connecting mechanism comprising a rod connecting assembly, a drill rod storage and a swinging rod feeding mechanism, the rod connecting assembly comprising a front end drill clamp and a rock drill drill tail, the front end drill clamp is connected to the front end bracket of the rock drill, and cooperates with the drill tail to realize rod connecting; the drill rod storage is connected to the front end bracket of the rock drill, located on the side of the rock drill propulsion beam, and is used to store drill rods; the swinging rod feeding mechanism is connected to the front end bracket of the rock drill, located between the front end drill clamp and the drill tail, and swings back and forth between the drill rod storage and the rod connecting assembly to transport the drill rod; the automatic rod connecting mechanism for the rock drilling trolley provided in the patent application document realizes the back and forth swinging transportation of the drill rod between the drill rod storage and the connecting rod assembly through the swinging rod feeding mechanism, realizes the connecting of the drill rod through the rod connecting assembly, stores the drill rods through the drill rod storage, realizes the automatic rod connecting operation, and improves the work efficiency of the rod connecting operation.

[0004] Rock drilling rigs are often used in drilling operations in underground mines. In order to achieve the desired blasting effect, it is sometimes necessary to drill holes at the edge of the mine. The connecting rod mechanism disclosed in the above patent application document occupies a large space on the upper side of the drill rod, which will interfere with the rock drilling rig when drilling holes at the edge of the mine, affecting the drilling work. Summary of the invention

[0005] The present invention provides an automatic rod connecting device for a rock drilling trolley, aiming to solve the problem in the related art that the rod connecting mechanism in the rock drilling trolley occupies the upper space of the drill rod and interferes with the drilling of the rock drilling trolley at the edge of the mine.

[0006] The automatic rod-connecting device of the rock drilling trolley of the present invention comprises a drilling arm and a feeding assembly, a loading assembly and a guiding assembly installed on the drilling arm;

[0007] The feed assembly is slidably matched with the drilling arm and is used to rotate and propel the drill rod to move. The guide assembly is arranged at one end of the drilling arm away from the body of the rock drilling vehicle, and the guide assembly includes a guide member and a limiting structure. The guide member is provided with a guide groove, and the limiting structure is arranged in the guide groove and is used to limit the unidirectional rotation of the drill rod;

[0008] The loading assembly includes a storage groove, a bracket and a driving member. There are two storage grooves, which are relatively arranged at both ends of the length of the drilling arm. The two ends of the drill rod are respectively slidably matched with the two storage grooves. The lower end of the storage groove is the loading position. There is a drill rod in the loading position at the same time. The driving member drives the bracket to move longitudinally and lifts the drill rod at the loading position to move upward.

[0009] The beneficial effects are: it is convenient to automatically connect the rod according to the drilling depth requirements during the drilling process, and at the same time will not cause interference in the drilling operation of the drilling rig at the edge of the mine. The feed assembly rotates to push the drill rod into the rock. When the length of a drill rod does not meet the requirements, the guide assembly is used to limit the one-way rotation of the drill rod after the drill rod is drilled in place, so that the feed assembly can be smoothly separated from the old drill rod, and the new drill rod can be re-loaded by the loading assembly, and the external threaded end of the drill rod is threadedly connected with the internal threaded end of the drill rod drilled into the rock. The feed assembly is re-matched with the new drill rod thread, and the drill rod is automatically loaded according to the drilling requirements, which facilitates the rod connection operation of the drill rod, while reducing the space occupied and avoiding interference with the drilling operation of the drilling rig at the edge of the mine.

[0010] Preferably, the limiting structure includes an outer cylinder and an inner cylinder, the outer cylinder is fixed in the guide groove, the inner cylinder is coaxially arranged on the inner side of the outer cylinder and rotatably cooperates with the outer cylinder, one end of the drill rod is provided with an external thread, and the other end of the drill rod is provided with an internal thread, when the drill rod moves until its internal thread end enters the inner cylinder, the drill rod and the inner cylinder are relatively fixed in the circumferential direction.

[0011] Preferably, the inner cylinder is elastically slidably matched with the outer cylinder in its axial direction, and the outer cylinder is provided with a movable groove whose width increases along the advancing direction of the drill rod, and the limiting structure also includes a limit block and a stopper, and the limit block is slidably matched with the inner cylinder along the radial direction of the inner cylinder, and the internal threaded end of the drill rod is provided with a limit groove parallel to its axial direction, when the internal threaded end of the drill rod enters the inner cylinder, one end of the limit block extends into the limit groove and slidably matches with the limit groove, and the other end of the limit block extends into the movable groove, and the stopper is elastically slidably connected with the outer cylinder along a direction parallel to the axial direction of the outer cylinder, and the stopper movably abuts against the limit block in the movable groove and limits the unidirectional rotation of the limit block.

[0012] The beneficial effects are: it is easy to connect the two drill rods smoothly. While the guide assembly guides the drill rod, it can also limit the drill rod to only one-way rotation after the internal thread end of the drill rod moves to the guide assembly. When the feed assembly drives the drill rod in reverse, the driving end of the feed assembly is relatively disengaged from the internal thread end of the drill rod. After the feed assembly is disengaged from the drill rod, it is reset to the initial state, and after the new drill rod is loaded, it is re-fixed to the new drill rod thread through a rotation operation, and at the same time, the new drill rod is connected to the drill rod remaining in the guide assembly to realize the rod connection operation.

[0013] Preferably, the bottom of the storage tank is inclined, the loading position is deviated from the storage tank in the longitudinal direction, and the loading assembly further comprises a loading tank, the bottom of which is connected to the loading position.

[0014] Preferably, a longitudinal partition is provided between the storage slot and the loading slot, the upper end of the partition is provided with a notch, and guide plate one and guide plate two are provided at the notch, the lower end of the guide plate one is rotatably engaged with the partition through a torsion spring, the guide plate one is inclined from bottom to top in a direction away from the storage slot, the upper end of the guide plate two is rotatably engaged with the drilling arm through a torsion spring, and the lower end of the guide plate two is movable relative to the lower end of the guide plate two.

[0015] The beneficial effects are: it is easy to push the new drill rod for loading, the drill rod slides along the storage slot and automatically falls into the loading position, after the drill rod to be installed enters the loading position from the storage slot, the driving part pushes the bracket to move up, and the bracket drives the drill rod to move up until the drill rod is coaxial with the drill rod drilled into the rock, and the storage slot can also collect the drill rod taken out after drilling is completed, which facilitates the loading and unloading operations of the drill rod.

[0016] Preferably, the drilling mechanism also includes a supporting assembly, which includes a seat body, a clamping member, an adjusting structure and a moving member, the moving member drives the seat body to slide relative to the drilling arm, there are two clamping members, the two clamping members are relatively arranged and connected to the seat body through an elastic member, the elastic member pushes the two clamping members to be relatively close to clamp the drill rod, the drill rod rotates in cooperation with the clamping members, the two clamping members are connected to the adjusting structure at the same time, and the adjusting structure adjusts the two clamping members to move synchronously relative to each other.

[0017] The beneficial effects are: improving the stability of the drill rod drilling operation, ensuring the drilling accuracy, the support assembly supports the drill rod in the middle of the drill rod, reducing the vibration of the drill rod drilling into the rock operation, and improving the stability of the feed assembly in pushing the drill rod to drill the hole.

[0018] Preferably, the adjustment structure includes a gear and two racks, the gear is rotationally matched with the seat body, the two racks are respectively fixed to the two clamping members, the two racks are relatively parallel and slidingly matched with the seat body, and the two racks are simultaneously meshed with the gear.

[0019] The beneficial effects are: improving the accuracy of the position of the newly connected drill rod, the two clamping parts are connected to the adjustment structure at the same time, and the adjustment structure drives the two clamping parts to move closer and farther synchronously through two racks meshing with the same gear, so as to ensure that the newly connected drill rod is coaxial with the old drill rod after the support assembly clamps the drill rod, thereby improving the docking accuracy of the drill rod.

[0020] Preferably, the width of the upper end of the bracket is smaller than the minimum width of the distance between the lower ends of the two clamping members, and the width of the bracket increases from top to bottom.

[0021] Preferably, the opposite end surfaces of the two clamping members are provided with clamping parts, the opposite end surfaces of the two clamping parts are arc-shaped surfaces opposite to the drill rod, and rollers are rotatably provided on the arc-shaped surfaces of the two clamping parts, and the rollers are in rolling contact with the drill rod.

[0022] Preferably, the feed assembly and the support assembly are connected via a transmission assembly, and the transmission assembly includes a winding drum, a winding rope, a guide wheel one and a guide wheel two, the winding drum is fixed on the drilling arm, the guide wheel one is fixed relative to the feed assembly, and the guide wheel two is fixed relative to the support assembly, the winding rope simultaneously passes around the guide wheel one and the guide wheel two and is wound around the winding drum, the support assembly is located in the middle of the feed assembly and the guide assembly, and the moving process of the feed assembly is twice the moving process of the support assembly.

[0023] The beneficial effects of the present invention are:

[0024] (1) It is convenient to automatically connect the drill rod according to the drilling depth requirements during the drilling process, and will not cause interference in the drilling operation of the drilling rig at the edge of the mine. The feed assembly rotates to push the drill rod into the rock. When the length of a drill rod does not meet the requirements, the guide assembly is used to limit the one-way rotation of the drill rod after the drilling operation of the drill rod is in place, so that the feed assembly can be smoothly separated from the old drill rod, and the new drill rod can be reloaded by the loading assembly, and the external thread end of the drill rod is threadedly connected with the internal thread end of the drill rod drilled into the rock. The feed assembly is re-matched with the new drill rod thread, and the drill rod is automatically loaded according to the drilling requirements, which facilitates the operation of connecting the drill rod, while reducing the space occupied and avoiding interference with the drilling operation of the drilling rig at the edge of the mine.

[0025] (2) Improve the stability of the drill pipe drilling operation and ensure the drilling accuracy. The support assembly supports the drill pipe in the middle of the drill pipe, reduces the vibration of the drill pipe during the rock drilling operation, and improves the stability of the feed assembly in pushing the drill pipe to drill holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the installation of the connecting rod device provided by the present invention relative to the body of the rock drilling vehicle.

[0027] Figure 2 It is a schematic diagram of the overall structure of the connecting rod device in the present invention.

[0028] Figure 3 It is a structural schematic diagram of the winding drum, feeding assembly and guide wheel 1 in the present invention.

[0029] Figure 4 It is a structural schematic diagram of the cooperation between the drill rod and the guide assembly in the present invention.

[0030] Figure 5 It is a structural schematic diagram of the cooperation between the support assembly and the drill rod in the present invention.

[0031] Figure 6 It is a schematic diagram of the structure in which the storage trough and the loading trough are arranged on the drilling arm in the present invention.

[0032] Reference numerals:

[0033] 1. Car body; 2. Drilling arm; 21. Feed assembly; 22. Guide member; 23. Outer cylinder; 231. Movable slot; 232. Stop block; 24. Inner cylinder; 241. Limit block; 25. Storage slot; 251. Loading position; 26. Loading slot; 27. Guide plate 1; 28. Guide plate 2; 29. ​​Partition plate; 3. Base; 31. Clamping member; 311. Clamping part; 32. Elastic member; 33. Rack; 4. Drill rod; 41. Limiting slot; 5. Bracket; 51. Driving member; 6. Winding drum; 61. Guide wheel 2; 62. Winding rope; 63. Guide wheel 1. DETAILED DESCRIPTION

[0034] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0035] like Figure 1 and Figure 2As shown, the automatic rod connecting device of the rock drilling trolley of the present invention comprises a drilling arm 2, a feeding assembly 21, a loading assembly and a guiding assembly. The feeding assembly 21, the loading assembly and the guiding assembly are all installed on the drilling arm 2. The feeding assembly 21 is used for rotating and pushing the drill rod 4 to move. The guiding assembly is arranged at one end of the drilling arm 2 away from the vehicle body 1. The drill rod 4 passes through the guiding assembly. One end of the drill rod 4 is provided with an external thread, and the other end of the drill rod 4 is provided with an internal thread. In order to facilitate the drill rod 4 to drill into the rock smoothly, a drill bit is fixed on the external thread end of the drill rod 4 that is first drilled into the rock, and the internal thread end of the first drill rod 4 is threadedly matched with the feeding assembly 21. The feeding assembly 21 drives the drill rod 4 to rotate while moving along the drilling arm 2, so as to realize the requirement of rotating and pushing the drill rod 4 to drill into the rock. The feed assembly 21 is a rock drill, which is provided with components such as a hydraulic motor, a gear reduction box, and a rotating bushing. The power output by the hydraulic motor drives the drill rod 4 to rotate through the gear reduction box and the rotating bushing. The rock drill belongs to the prior art, and its specific structural features are not described here. The feed assembly 21 is threadedly matched with the drill rod 4, so that when the length of a drill rod 4 does not meet the requirements, the feed assembly 21 is separated from the drill rod 4, and after the loading assembly re-loads a new drill rod 4, the external threaded end of the newly connected drill rod 4 is threadedly connected with the internal threaded end of the drill rod 4 drilled into the rock, and the feed assembly 21 is threadedly matched with the internal threaded end of the new drill rod 4 again, so as to achieve the purpose of automatically loading and connecting the drill rod 4 according to the drilling requirements.

[0036] like Figure 2 and Figure 6 As shown, the loading assembly includes a storage slot 25, a bracket 5 and a driving member 51. There are two storage slots 25, which are respectively arranged at the two ends of the length of the drilling arm 2. The two ends of the drill rod 4 are respectively slidably matched with the two storage slots 25. The lowest end of the storage slot 25 is a loading position 251, which is offset relative to the storage slot 25 in the longitudinal direction, and the loading position 251 can only accommodate one drill rod 4 at a time. The loading assembly also includes a loading slot 26, and the loading position 251 is connected to the loading slot 26, and the loading position 251 is longitudinally opposite to the loading slot 26. The driving member 51 is provided with a plurality of storage slots 25, and the storage slots 25 are arranged to be connected to the storage slot 25. The moving part 51 is used to drive the bracket 5 to rise and fall on the drilling arm 2. In its initial state, the bracket 5 is located at the lower side of the loading position 251. After the drill rod 4 to be installed enters the loading position 251 from the storage slot 25, the driving part 51 pushes the bracket 5 to move upward, and the bracket 5 drives the drill rod 4 to move upward until the drill rod 4 is coaxially opposite to the drill rod 4 drilled into the rock. Then the feed assembly 21 approaches the new drill rod 4 and is threadedly connected to the new drill rod 4 through its threaded end. After the new drill rod 4 is fixed to it, it drives the new drill rod 4 to rotate relative to the drill rod 4 drilled into the rock until the two drill rods 4 are threadedly assembled.

[0037] During the feeding operation, in order to avoid interference with the action of the bracket 5 pushing the drill rod 4 upward, one drill rod 4 is put into the storage groove 25 at a time, and the drill rod 4 slides along the storage groove 25 and automatically falls into the loading position 251. After the bracket 5 moves down to the unloading position, a new spare drill rod 4 is put in to avoid the drill rod 4 affecting the reset of the bracket 5. After the drilling operation is completed, each drill rod 4 needs to be pulled out and collected. After the feed assembly 21 pulls each drill rod 4 out of the drill hole one by one, the drill rod 4 falls from the loading groove 26 for collection. In order to facilitate the drill rod 4 to enter the storage groove 25 for storage and collection smoothly, a longitudinal partition 29 is provided between the storage groove 25 and the loading groove 26, and a notch is provided at the upper end of the partition 29, and a guide plate 1 27 and a guide plate 28 are provided at the notch. The lower end of the guide plate 1 27 is connected to the partition 2 by a torsion spring. 9 rotates together, the guide plate 1 27 tilts from bottom to top in the direction away from the storage slot 25, the upper end of the guide plate 28 rotates with the drilling arm 2 through the torsion spring, and the lower end of the guide plate 28 moves relative to the lower end of the guide plate 28. When the taken out drill rod 4 falls along the loading slot 26, it is blocked by the guide plate 1 27 and pushes the guide plate 28 to rotate and smoothly enter the storage slot 25. In addition, the setting of the guide plate 1 27 will not interfere with the loading of the drill rod 4. When the bracket 5 pushes the drill rod 4 to move upward, the drill rod 4 pushes the guide plate 1 27 to rotate relative to the partition plate 29, so that the drill rod 4 can move upward smoothly through the guide plate 1 27. In order to improve the stability of the bracket 5 pushing the drill rod 4 to move upward and prevent the drill rod 4 from rolling relative to the bracket 5, an arc groove matching the shape of the drill rod 4 can be provided on the bracket 5.

[0038] like Figure 4 As shown, in order to smoothly dock the two drill rods 4, it is necessary to limit the rotation of the other drill rod 4 when driving the new drill rod 4 to rotate. The guide assembly is used to guide the drill rod 4. After the internal thread end of the drill rod 4 moves to the guide assembly, the drill rod 4 can be limited to rotate in only one direction. The guide assembly includes a guide member 22 and a limiting structure. The guide member 22 is provided with a guide groove. The limiting structure is arranged in the guide groove. The limiting structure includes an inner cylinder 24, an outer cylinder 23, a limiting block 241 and a stopper 232. The inner cylinder 24 and the outer cylinder 23 are coaxially arranged. The outer cylinder 23 is fixed in the guide groove. The inner cylinder 24 rotates with the outer cylinder 23 inside the outer cylinder 23. The inner cylinder 24 slides with the outer cylinder 23 in the axial direction and is elastically connected. The side advancing toward the drill rod 4 is the front side. The front end of the inner cylinder 24 and the front end of the outer cylinder 23 are connected by a spring. When the inner cylinder 24 slides forward in the outer cylinder 23, the spring is squeezed and the spring is charged.

[0039] There are multiple limit blocks 241 and stop blocks 232, each of which is evenly arranged along the circumference of the inner cylinder 24, and each limit block 241 slides with the inner cylinder 24 along the radial direction of the inner cylinder 24. A movable groove 231 is provided on the outer cylinder 23, and the movable groove 231 is a cone with a diameter increasing along the advancing direction of the drill rod 4. The inner end of the limit block 241 contacts the drill rod 4 inside the inner cylinder 24, and the outer end of the limit block 241 extends into the movable groove 231. A plurality of limit grooves 41 are provided on the outer circumferential side of the inner threaded end of the drill rod 4. The drill rod 4 is advanced until its threaded end enters the inner cylinder 24. When the drill rod 4 is in the state of being rotated, the inner end of each limit block 241 enters the limit groove 41, and the limit block 241 and the limit groove 41 can slide in the direction parallel to the axial direction of the drill rod 4. The limit block 241 cooperates with the limit groove 41 to limit the relative rotation of the drill rod 4 and the limit block 241 in the circumferential direction, that is, the drill rod 4 and the limit block 241 rotate synchronously in the circumferential direction. After the rotation of the limit block 241 in the circumferential direction is restricted, the rotation of the drill rod 4 is also restricted. The stop block 232 is used to limit the unidirectional rotation of the limit block 241. Specifically, the stop block 232 is elastically matched with the outer cylinder 23, and the stop block 232 is squeezed. When the drill rod 4 drives the limit block 241 to rotate forward, the limit block 241 abuts against the inclined surface end of the stop block 232 at intervals and pushes the stop block 232 to slide. When the drill rod 4 drives the limit block 241 to rotate in the reverse direction, the limit block 241 abuts against the straight surface end of the stop block 232, and the stop block 232 blocks the rotation of the limit block 241. After the internal thread end of the drill rod 4 enters the inner cylinder 24, the limit block 241 is pushed against the inner cylinder 24. When the stopper 232 is movably abutted, that is, the advancement position of the drill rod 4 has been reached, and a new drill rod 4 needs to be connected, the feed assembly 21 drives the drill rod 4 in reverse, and the guide assembly limits the rotation of the drill rod 4 in the reverse direction, and the feed assembly 21 is relatively disengaged from the internal threaded end of the drill rod 4, so that the feed assembly 21 is smoothly disengaged from the drill rod 4. After the feed assembly 21 is disengaged from the drill rod 4, it is reset to the initial state, and after the new drill rod 4 is loaded, it is threadedly fixed to the new drill rod 4 again through a rotation operation, and at the same time, the new drill rod 4 is connected to the drill rod 4 remaining in the guide assembly to realize the rod connection operation.

[0040] In order to facilitate the smooth cooperation between the internal thread end of the drill rod 4 and the limit blocks 241 after entering the inner cylinder 24, the front side of the internal thread end of the drill rod 4 is a tapered surface with an increasing diameter from front to back, and the front and rear ends of each limit block 241 are both arc-shaped, so that after the internal thread end of the drill rod 4 enters the inner cylinder 24, the tapered surface on the front side squeezes the limit blocks 241 to be relatively separated, and when the drill rod 4 rotates, when the limit grooves 41 on it correspond to the limit blocks 241, the limit blocks 241 enter the limit grooves 41 respectively, and the rod body part of the drill rod 4 is a round rod. When the rod body part of the drill rod 4 is in the inner cylinder 24, it slides with the limit blocks 241, will not drive the limit blocks 241 to rotate, and will not trigger the work of the limit structure, In order to facilitate the detection of the drill rod 4 being pushed into place, a pressure sensor can be set on the end face of the outer cylinder 23 connected to the spring. After the internal threaded end of the drill rod 4 cooperates with each limit block 241, when the feed assembly 21 rotates forward to push the drill rod 4 into the rock, the limit blocks 241 are relatively far away and slide forward under the restriction of the shape of the movable groove 231, thereby driving the inner cylinder 24 to slide relative to the outer cylinder 23 to squeeze the spring. The pressure sensor receives the pressure signal and converts it into an electrical signal. A control unit can also be set on the vehicle body 1. The output end of the pressure sensor is connected to the control unit. The control unit also controls the operation of the feed assembly 21. After receiving the pressure change signal, the control unit controls the feed assembly 21 to reverse and disengage from the drill rod 4.

[0041] like Figure 5 As shown, the overall length of the drill rod 4 is relatively long. When the feed assembly 21 rotates to push the drill rod 4 into the rock, the distance between the driving end and the pushing end of the drill rod 4 is too large, which may affect the stability of the drilling operation of the drill rod 4. In order to improve the stability of the drilling operation of the drill rod 4 and ensure the drilling accuracy, the drilling mechanism also includes a support assembly, which is located between the feed assembly 21 and the guide assembly and is used to support the middle part of the drill rod 4.

[0042] The supporting assembly includes a seat body 3, a clamping member 31, an adjustment structure and a moving member. The moving member drives the seat body 3 to slide relative to the drilling arm 2. There are two clamping members 31. The two clamping members 31 are arranged opposite to each other and are connected to the seat body 3 through an elastic member 32. The elastic member 32 pushes the two clamping members 31 to be relatively close to clamp the drill rod 4, and the drill rod 4 rotates in cooperation with the clamping members 31. Specifically, clamping parts 311 are provided on the opposite end faces of the two clamping members 31. The opposite end faces of the two clamping parts 311 are arc-shaped surfaces opposite to the drill rod 4. Rollers are rotatably provided on the arc-shaped surfaces of the two clamping parts 311, and the rollers are in rolling contact with the drill rod 4.

[0043] In order to ensure that the newly connected drill rod 4 is axially relative to the old drill rod 4, the two clamping members 31 are connected to the adjustment structure at the same time. The adjustment structure adjusts the two clamping members 31 to move relative to each other synchronously. The adjustment structure includes a gear and two racks 33. The gear rotates with the seat body 3. The two racks 33 are respectively fixed to the two clamping members 31. The two racks 33 are relatively parallel and slidingly matched with the seat body 3. The two racks 33 are meshed with the gear at the same time.

[0044] To facilitate the loading assembly to smoothly push the drill rod 4 into the supporting assembly, the width of the upper end of the bracket 5 is smaller than the minimum width of the distance between the lower ends of the two clamping members 31. The width of the bracket 5 increases from top to bottom. When the bracket 5 moves up to contact with the lower ends of the two clamping members 31, the two clamping members 31 are pushed relatively away from each other. The bracket 5 smoothly enters between the two clamping members 31 to lift the drill rod 4 to a specified height. After the feed assembly 21 is connected to the new drill rod 4, the bracket 5 moves down and resets. The two clamping members 31 are relatively close to each other under the action of the elastic member 32 and clamp the drill rod 4.

[0045] In order to ensure the supporting effect of the support assembly on the drill rod 4, the support assembly is always located between the guide assembly and the feed assembly 21 during the operation of the drill rod 4 pushing the rock. To achieve this operation, the feed assembly 21 and the support assembly are connected through a transmission assembly, such as Figure 3 and Figure 5 As shown, the transmission assembly includes a winding drum 6, a winding rope 62, a guide wheel 1 63 and a guide wheel 2 61. The winding drum 6 is fixed on the drilling arm 2, the guide wheel 1 63 is fixed relative to the feed assembly 21, and the guide wheel 2 61 is fixed relative to the support assembly. The winding rope 62 passes around the guide wheel 1 63 and the guide wheel 2 61 at the same time and is wound on the winding drum 6. The support assembly is located in the middle of the feed assembly 21 and the guide assembly, and the moving process of the feed assembly 21 is twice the moving process of the support assembly.

[0046] The driving end of the feed assembly 21 is threaded. In order to ensure that the feed assembly 21 can still cooperate with the drill rod 4 when the internal threaded end of the drill rod 4 enters the guide assembly, the length of the driving end of the feed assembly 21 can be set to be greater than the length of the support assembly, so that when the feed assembly 21 pushes the drill rod 4 to move, the driving end of the feed assembly 21 can pass through the support assembly to avoid affecting the normal driving operation of the feed assembly 21.

[0047] The automatic rod connecting device for the rock drilling trolley provided by the present invention is convenient for automatically connecting the rods according to the drilling depth requirements during the drilling process, reduces the space occupied, does not cause interference with the drilling operation at the edge of the mine, and by providing a support component, improves the stability of the drill rod during the drilling process, thereby ensuring the drilling quality.

[0048] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0049] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0050] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. An automatic rod-jointing device for a rock drilling rig, including a drilling arm, characterized in that: Also included are a feed assembly, a loading assembly and a guide assembly mounted on the drilling arm; The feed assembly is slidably matched with the drilling arm and is used to rotate and propel the drill rod to move. The guide assembly is arranged at one end of the drilling arm away from the body of the rock drilling vehicle. The guide assembly includes a guide member and a limiting structure. The guide member is provided with a guide groove. The limiting structure is arranged in the guide groove and is used to limit the unidirectional rotation of the drill rod. The loading assembly includes a storage slot, a bracket and a driving member. There are two storage slots, which are arranged opposite to each other at the two ends of the length of the drilling arm. The two ends of the drill rod are respectively slidably matched with the two storage slots. The lower end of the storage slot is the loading position. There is a drill rod in the loading position at the same time. The driving member drives the bracket to move longitudinally and lifts the drill rod at the loading position to move upward; The limiting structure includes an outer cylinder and an inner cylinder. The outer cylinder is fixed in the guide groove. The inner cylinder is coaxially arranged inside the outer cylinder and rotates with the outer cylinder. One end of the drill rod is provided with an outer thread, and the other end of the drill rod is provided with an inner thread. When the drill rod moves until its inner thread end enters the inner cylinder, the drill rod and the inner cylinder are relatively fixed in the circumferential direction. The inner cylinder is elastically slidably matched with the outer cylinder in its axial direction, and the outer cylinder is provided with a movable groove whose width increases along the advancing direction of the drill rod. The limiting structure also includes a limiting block and a stopper. The limiting block is slidably matched with the inner cylinder along the radial direction of the inner cylinder, and the internal threaded end of the drill rod is provided with a limiting groove parallel to its axial direction. When the internal threaded end of the drill rod enters the inner cylinder, one end of the limiting block extends into the limiting groove and slidably matches with the limiting groove, and the other end of the limiting block extends into the movable groove. The stopper is elastically slidably connected with the outer cylinder along a direction parallel to the axial direction of the outer cylinder, and the stopper movably abuts against the limiting block in the movable groove and limits the unidirectional rotation of the limiting block.

2. The automatic rod connecting device of the rock drilling trolley according to claim 1, characterized in that: The bottom of the storage tank is inclined, and the loading position deviates from the storage tank in the longitudinal direction. The loading assembly also includes a loading tank, and the bottom of the loading tank is connected to the loading position.

3. The automatic rod connecting device of the rock drilling trolley according to claim 2, characterized in that: A longitudinal partition is provided between the storage trough and the loading trough, and a notch is provided at the upper end of the partition, and guide plate one and guide plate two are provided at the notch, and the lower end of guide plate one is rotatably matched with the partition through a torsion spring, and guide plate one is inclined from bottom to top in a direction away from the storage trough, and the upper end of guide plate two is rotatably matched with the drilling arm through a torsion spring, and the lower end of guide plate two is movable relative to the lower end of guide plate two.

4. The automatic rod connecting device of a rock drilling trolley according to claim 1, characterized in that: The drilling mechanism also includes a supporting assembly, which includes a seat body, a clamping member, an adjusting structure and a moving member. The moving member drives the seat body to slide relative to the drilling arm. There are two clamping members, which are relatively arranged and connected to the seat body through an elastic member. The elastic member pushes the two clamping members to be relatively close to clamp the drill rod, and the drill rod rotates in cooperation with the clamping member. The two clamping members are connected to the adjusting structure at the same time, and the adjusting structure adjusts the two clamping members to move synchronously relative to each other.

5. The automatic rod connecting device of the rock drilling trolley according to claim 4, characterized in that: The adjustment structure includes a gear and two racks. The gear rotates with the seat body, the two racks are fixed to two clamping members respectively, the two racks are relatively parallel and slide with the seat body, and the two racks are meshed with the gear at the same time.

6. The automatic rod connecting device of a rock drilling trolley according to claim 4, characterized in that: The width of the upper end of the bracket is smaller than the minimum width of the distance between the lower ends of the two clamping members, and the width of the bracket increases from top to bottom.

7. The automatic rod connecting device of a rock drilling trolley according to claim 4, characterized in that: The opposite end surfaces of the two clamping members are provided with clamping parts, and the opposite end surfaces of the two clamping parts are arc-shaped surfaces opposite to the drill rod. Rollers are rotatably provided on the arc-shaped surfaces of the two clamping parts, and the rollers are in rolling contact with the drill rod.

8. The automatic rod connecting device of a rock drilling trolley according to claim 4, characterized in that: The feed assembly and the support assembly are connected through a transmission assembly, and the transmission assembly includes a winding drum, a winding rope, a guide wheel one and a guide wheel two. The winding drum is fixed on the drilling arm, the guide wheel one is fixed relative to the feed assembly, and the guide wheel two is fixed relative to the support assembly. The winding rope passes around the guide wheel one and the guide wheel two at the same time and is wound on the winding drum. The support assembly is located in the middle of the feed assembly and the guide assembly, and the moving process of the feed assembly is twice the moving process of the support assembly.

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