Tooth profile testing device for double-geared roller crusher

Abstract

The utility model relates to the technical field of double-geared roller crushers, in particular to a tooth profile testing device of a double-geared roller crusher. Comprising a machine frame, a box body arranged above the machine frame and a discharging hopper arranged below the box body. A first crushing roller and a second crushing roller are arranged in the box body, the two ends of the box body are rotationally connected to bearing seats through shaft end sealing pieces, and the bearing seats are slidably connected with the rack; a first gear motor and a second gear motor are arranged on the side part of the box body and respectively drive the two crushing rollers; distance adjusting assemblies symmetrically arranged on the two sides of the rack are connected with the bearing seats and drive the bearing seats to slide in the vertical direction of the rack so as to adjust the distance between the two crushing rollers; each distance adjusting assembly is correspondingly provided with a locking assembly used for fixing the distance adjusting assembly. Precise adjustment of the distance between the crushing rollers is achieved through the distance adjusting assembly, the distance stability under the dynamic working condition is maintained in combination with the locking assembly, real crushing parameter changes are effectively simulated in cooperation with the detachable crushing toothed plate and the adjustable box body structure, the problem of low tooth profile dynamic test precision is solved, and a reliable test basis is provided for optimizing the crushing tooth profile design.

Description

Technical Field

[0001] This utility model belongs to the technical field of double-toothed roller crushers, specifically a tooth profile testing device for double-toothed roller crushers. Background Technology

[0002] In industries such as mining, metallurgy, and building materials, material crushing is a core step in resource processing, and its efficiency and energy consumption directly determine the economic efficiency and environmental friendliness of the production line. Double-toothed roller crushers, with their advantages of compact structure, large processing capacity, and low over-crushing rate, have become key equipment for coarse and medium crushing of medium-hard and brittle materials such as coal, limestone, and coke. Among these components, the tooth shape, as a core functional component of the roller crusher, directly affects the crushing ratio, particle size distribution, and equipment wear rate due to its geometric parameters (such as tooth height, tooth angle, and arrangement).

[0003] Currently, traditional tooth profile design mainly relies on empirical formulas and static simulation, which has the following drawbacks: First, it cannot simulate the impact of dynamic loads on the stress distribution of the tooth surface under real working conditions, resulting in significant deviations between design parameters and actual performance; second, it lacks precise control methods for the dynamic offset of the roller gap, making it difficult to capture the vibration spectrum characteristics during the crushing process; third, existing testing equipment cannot achieve rapid replacement and combination testing of crushing tooth plates, which restricts the optimization efficiency of tooth profile parameters. These problems lead to high trial and error costs, making it difficult to meet the customized needs of rapid iteration, and even more difficult to conduct systematic collaborative testing and modeling of key operating parameters that are interrelated and dynamically influential.

[0004] Therefore, there is an urgent need to design a test device for the tooth profile of a double-toothed roll crusher that can simulate real working conditions, perform data-driven optimization, and realize multi-parameter coupled analysis. Utility Model Content

[0005] The purpose of this application is to provide a tooth profile testing device for a double-toothed roller crusher, which has the advantages of improving the accuracy of crusher tooth profile testing and realizing dynamic parameter coordinated control.

[0006] This utility model provides a tooth profile testing device for a double-toothed roll crusher. The technical solution is as follows: A tooth profile testing device for a double-toothed roll crusher includes: a frame, a box body above the frame, a discharge hopper below the box body, and the discharge hopper being fixedly connected to the frame; a crushing roll assembly, including a first crushing roll and a second crushing roll arranged parallel to each other within the box body, the two ends of the first and second crushing rolls respectively passing through the side wall of the box body and rotatably connected to a bearing seat through a shaft end seal, the bearing seat being slidably connected to the frame; a motor assembly, including a first reduction motor and a second reduction motor respectively arranged on one side of the box body, the output end of the first reduction motor being drivenly connected to one end of the first crushing roll, and the output end of the second reduction motor being drivenly connected to one end of the second crushing roll; a distance adjustment assembly, symmetrically arranged on both sides of the frame, and the distance adjustment assembly being fixedly connected to the bearing seats at both ends of the first and second crushing rolls respectively, for driving the bearing seats to slide along the vertical direction of the frame to adjust the distance between the two crushing rolls; and a locking assembly, correspondingly arranged on each distance adjustment assembly, for fixing the corresponding distance adjustment assembly to the frame after the distance between the first and second crushing rolls is adjusted.

[0007] Furthermore, both the first crushing roller and the second crushing roller include a square combined shaft and multiple crushing tooth plates. The square combined shaft includes a square tooth plate seat extending along the axial direction and a long half shaft and a short half shaft fixedly connected to both ends respectively. The multiple crushing tooth plates are detachably installed on the outer circumferential surface of the square tooth plate seat. The long half shaft and the short half shaft pass through the side wall of the housing and are fixed with the shaft end seal. The outer ends of the two long half shafts are respectively connected to the output ends of the first reduction motor and the second reduction motor.

[0008] Furthermore, the housing includes two parallel upright plates, with an adjustable first side plate and a second side plate between the two upright plates. The first side plate and the second side plate are detachably connected to the upright plates by fastening bolts. The long half shaft and short half shaft of the first crushing roller and the second crushing roller pass through the two upright plates and are connected to the shaft end seals.

[0009] Furthermore, the two ends of the upright plate are provided with multiple rows of equidistant positioning holes along the length direction, and the two ends of the first side plate and the second side plate are provided with mounting holes corresponding to the positioning holes; by passing the fastening bolts through the mounting holes and the selected number of positioning holes in sequence, the distance between the first side plate and the second side plate can be adjusted.

[0010] Furthermore, the pitch adjustment components are in four groups and symmetrically distributed on the two vertical beams of the frame. Each vertical beam has two pitch adjustment components symmetrically arranged at both ends. Each pitch adjustment component includes a lead screw, a support seat, a pallet seat, and a fixed seat. The pallet seat and the fixed seat are respectively fixedly connected to both ends of the bearing seat. The support seat is fixedly installed on the frame. One end of the lead screw passes laterally through the support seat and is fixedly connected to the pallet seat. By synchronously rotating the lead screws on both sides, the two pallet seats are driven to move along the axial direction of the lead screws, thereby moving the bearing seats on both sides and adjusting the radial distance between the first crushing roller and the second crushing roller.

[0011] Furthermore, the locking assembly includes a first locking member and a second locking member, which are symmetrically sleeved on the lead screw and abut against the two sides of the support seat. After the distance between the first crushing roller and the second crushing roller is adjusted, the first locking member and the second locking member are tightened simultaneously to generate axial preload on the two sides of the support seat and lock the axial position of the lead screw.

[0012] Furthermore, the frame includes an upper frame and a lower frame that are fixedly connected. The support base is fixed to both ends of the two vertical beams of the upper frame. Each vertical beam of the upper frame is provided with a pad. Each pad is provided with at least one first sliding groove and at least one second sliding groove. The pallet seat is slidably engaged with the first sliding groove through a first adjusting member, and the fixed seat is slidably engaged with the second sliding groove through a second adjusting member. The first adjusting member and the second adjusting member are respectively provided with a third locking member, which is used to fix the pallet seat and the fixed seat in a predetermined position on the pad after the distance between the first crushing roller and the second crushing roller is adjusted.

[0013] Furthermore, the pallet seat includes a pallet seat base plate, on which a first connecting hole is provided. A first adjusting member passes through the first sliding groove and the first connecting hole to slidably connect the pallet seat to the pad. The pallet seat also includes a pallet seat upright plate connected to the pallet seat base plate, and the pallet seat upright plate is connected to one end of the bearing seat.

[0014] Furthermore, the fixed seat includes a fixed seat base plate, on which a second connecting hole is provided. A second adjusting member passes through the second sliding groove and the second connecting hole to slide the fixed seat and the pad plate. The fixed seat also includes a fixed seat upright plate connected to the fixed seat base plate, and the fixed seat upright plate is fixedly connected to the other end of the bearing seat.

[0015] Furthermore, the motor assembly also includes a motor mount for supporting the first geared motor and the second geared motor; a reinforcing plate is provided on the side wall of the lower frame, and a third slide groove extending along the length direction is provided on the reinforcing plate; the motor mount is slidably connected to the lower frame through a third adjusting member passing through the third slide groove; the third adjusting member is pressed and fixed in a predetermined position in the third slide groove by a fourth locking member.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] (1) This utility model achieves precise adjustment of the gap between crushing rollers by driving the bearing seat through the pitch adjustment component, and maintains the positional stability under dynamic load by combining the locking component. It constructs a test platform that can accurately simulate dynamic working conditions, realizes real-time adjustment and stable maintenance of the gap between crushing rollers, and at the same time, the independent drive of the two rollers and the synchronous pitch adjustment component provide a reliable test method for studying the coupling relationship between tooth profile parameters and dynamic load, and fills the data gap between traditional static simulation and real working conditions.

[0018] (2) By combining the standardized square tooth plate seat with the detachable crushing tooth plate, this utility model can complete the comparative verification of multiple tooth profile parameters on the same test device, reduce trial and error costs, and realize the rapid replacement and combination test of the crushing tooth plate.

[0019] (3) In this utility model, the first side plate and the second side plate are adjusted to change the distance between them by adjusting their connection position with the vertical plate, so as to form a crushing chamber volume that is suitable for different material particle sizes. At the same time, it can also avoid the situation where the material at both ends is discharged before being fully crushed due to the large gap between the first side plate and the second side plate and the two crushing rollers when testing small diameter crushing rollers, thus further improving the accuracy of the tooth profile test of the double toothed roller crusher. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the main structure of the tooth profile testing device for the double-toothed roller crusher of this utility model;

[0022] Figure 2 This is a top view of the tooth profile testing device for the double-toothed roller crusher of this utility model.

[0023] Figure 3 This is a left-side structural schematic diagram of the tooth profile testing device for a double-toothed roller crusher according to this utility model;

[0024] Figure 4 This utility model Figure 3 Enlarged view of the local structure at point A;

[0025] Figure 5 This is a schematic diagram of the main structure of the crushing roller assembly in this utility model;

[0026] Figure 6 This is a side view sectional structural diagram of the crushing roller assembly in this utility model;

[0027] Figure 7 This is a top view of the frame structure in this utility model;

[0028] Figure 8 This is a schematic diagram of the right side of the frame structure in this utility model;

[0029] Figure 9 This is a three-dimensional structural diagram of the tray base in this utility model;

[0030] Figure 10 This is a three-dimensional structural diagram of the fixing base in this utility model;

[0031] Wherein: 1-Frame, 11-Upper frame, 110-Plate, 111-First slide rail, 112-Second slide rail, 12-Lower frame, 120-Reinforcing plate, 121-Third slide rail, 122-Third adjusting component, 123-Fourth locking component, 13-First adjusting component, 14-Second adjusting component, 15-Third locking component, 2-Box body, 21-Upright plate, 210-Positioning hole, 22-First side plate, 220-Mounting hole, 23-Second side plate, 3-Discharge hopper, 4-Crushing roller assembly, 41-First crushing roller, 410-Square combined shaft, 4100-Square toothed plate seat, 4101 - Long half-shaft, 4102 - Short half-shaft, 411 - Crushing tooth plate, 42 - Second crushing roller, 43 - Shaft end seal, 44 - Bearing seat, 5 - Motor assembly, 51 - First geared motor, 52 - Second geared motor, 53 - Motor seat, 6 - Adjusting assembly, 61 - Lead screw, 62 - Support seat, 63 - Pallet seat, 630 - Pallet seat base plate, 6300 - First connecting hole, 631 - Pallet seat upright plate, 64 - Fixed seat, 640 - Fixed seat base plate, 6400 - Second connecting hole, 641 - Fixed seat upright plate, 7 - Locking assembly, 71 - First locking element, 72 - Second locking element. Detailed Implementation

[0032] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0033] The following is in conjunction with the appendix Figure 1 To be continued Figure 10 The present invention will be described in detail with reference to specific embodiments.

[0034] This utility model provides a tooth profile testing device for a double-toothed roller crusher, including a frame 1, a housing 2 above the frame 1, and a discharge hopper 3 below the housing 2, with the discharge hopper 3 fixedly connected to the frame 1; a crushing roller assembly 4, including a first crushing roller 41 and a second crushing roller 42 arranged parallel to each other inside the housing, with both ends of the first crushing roller 41 and the second crushing roller 42 passing through the side wall of the housing 2 and rotatably connected to a bearing seat 44 through a shaft end seal 43, the bearing seat 44 being slidably connected to the frame 1; and a motor assembly 5, including a first reduction motor 51 and a second reduction motor 52 respectively arranged on one side of the housing 2. The output end of the geared motor 51 is connected to one end of the first crushing roller 41, and the output end of the second geared motor 52 is connected to one end of the second crushing roller 42. The pitch adjustment assembly 6 is symmetrically arranged on both sides of the frame 1, and the pitch adjustment assembly 6 is fixedly connected to the bearing seats 44 at both ends of the first crushing roller 41 and the second crushing roller 42, respectively, for driving the bearing seats 44 to slide along the vertical direction of the frame 1 to adjust the distance between the two crushing rollers. The locking assembly 7 is correspondingly arranged on each pitch adjustment assembly 6. After the distance between the first crushing roller 41 and the second crushing roller 42 is adjusted, the locking assembly 7 is used to fix the corresponding pitch adjustment assembly 6 on the frame.

[0035] The frame 1 refers to the main frame supporting the testing device, which can be a frame structure welded from square steel pipes to ensure the flatness of the mounting reference surfaces of each component and the overall rigidity. The crushing roller assembly 4 refers to the crushing rotation actuator, and the motor assembly 5 refers to the power output unit, supporting independent speed control of the two rollers. The gap adjustment assembly 6 refers to the gap adjustment mechanism, which allows the first and second crushing rollers to move in parallel, achieving adjustment of the gap between the two crushing rollers. The locking assembly 7 refers to the position holding device, which locks the crushing roller assembly 4 after the gap adjustment assembly 6 has completed the distance adjustment, ensuring the stability of the crushing roller assembly 4 during operation.

[0036] Through the above technical solutions, this application constructs a test platform that can accurately simulate dynamic working conditions, realize the real-time adjustment and stable maintenance of the crushing roller gap, and at the same time, the dual-roller independent drive and synchronous pitch adjustment components provide a reliable test method for studying the coupling relationship between tooth profile parameters and dynamic loads, filling the data gap between traditional static simulation and real working conditions.

[0037] For details, please refer to Figure 2 , Figures 5-6In this embodiment, both the first crushing roller 41 and the second crushing roller 42 include a square combination shaft 410 and multiple crushing tooth plates 411. The square combination shaft 410 includes a square tooth plate seat 4100 extending along the axial direction and a long half shaft 4101 and a short half shaft 4102 fixedly connected at both ends. The multiple crushing tooth plates 411 are detachably installed on the outer circumferential surface of the square tooth plate seat 4100. The long half shaft 4101 and the short half shaft 4102 pass through the side wall of the housing 2 and are sleeved and fixed with the shaft end seal 43. The outer ends of the two long half shafts 4101 are respectively connected to the output ends of the first reduction motor 51 and the second reduction motor 52 for transmission.

[0038] The square toothed plate seat 4100 refers to a shaft structure with four outer planes. Specifically, it can be formed by welding to create four equally angled mounting planes, providing a standardized assembly reference surface for the crushing toothed plate 411. The crushing toothed plate 411 is detachably installed, meaning it is fixed to the outer circumference of the square toothed plate seat 4100 by bolts or clips, facilitating independent disassembly or replacement. The shaft end seal 43 is fixed by using a labyrinth seal or a skeleton oil seal structure to wrap the contact area between the shaft and the bearing seat 44, preventing dust from seeping into the bearing area during crushing.

[0039] When the tooth profile parameters need to be adjusted, only the corresponding plane of the crushing tooth plate 411 needs to be removed and replaced, without disassembling the entire crushing roller, significantly shortening the testing cycle for different tooth profile parameters. Through the above technical solution, this application, by combining the standardized square tooth plate seat 4100 with the detachable crushing tooth plate 411, can complete the comparative verification of multiple tooth profile parameters on the same testing device, reducing trial and error costs and realizing the rapid replacement and combination testing of the crushing tooth plate 411.

[0040] Specifically, read Figures 2-4 , Figures 7-8 In this embodiment, the housing 2 includes two parallel upright plates 21. An adjustable first side plate 22 and a second side plate 23 are provided between the two upright plates 21. The first side plate 22 and the second side plate 23 are detachably connected to the upright plates 21 by fastening bolts. The long half shaft 4101 and the short half shaft 4102 of the first crushing roller 41 and the second crushing roller 42 pass through the two upright plates 21 and are connected to the shaft end seal 43.

[0041] The vertical plates 21 refer to the two vertical support plates that form the main frame of the housing 2, providing an installation reference and rigid support for the crushing roller assembly. The first side plate 22 and the second side plate 23 are movable side plates located between the two vertical plates 21. By adjusting their connection positions with the vertical plates 21, the distance between the first side plate 22 and the second side plate 23 can be changed to form a crushing chamber volume suitable for different material particle sizes. At the same time, it can also avoid the situation where, when testing small-diameter crushing rollers, the material at both ends is discharged without being fully crushed due to excessive gaps between the first side plate 22 and the second side plate 23 and the two crushing rollers, further improving the accuracy of the tooth profile test of the double-toothed roller crusher.

[0042] Compared with existing technologies, traditional testing devices use fixed-size housings, which cannot adjust the crushing chamber volume according to material characteristics and crushing roller diameter, resulting in limited testing parameters. The above-described technical solution solves the problem of limited test parameter adjustment caused by the fixed housing structure. It can quickly adapt to the testing needs of crushing rollers and materials of different diameters by adjusting the distance between the two side plates, reducing the number of times the testing device needs to be disassembled and reassembled, and improving testing efficiency and data comparability.

[0043] For details, please refer to Figure 4 In this embodiment, the two ends of the upright plate 21 are provided with multiple rows of equidistant positioning holes 210 along the length direction, and the two ends of the first side plate 22 and the second side plate 23 are provided with mounting holes 220 corresponding to the positioning holes 210. By passing the fastening bolts through the mounting holes 220 and the selected number of positioning holes 210 in sequence, the distance between the first side plate 22 and the second side plate 23 can be adjusted.

[0044] The multiple rows of equidistantly distributed positioning holes 210 refer to a hole structure arranged at fixed intervals along the length of the upright plate 21, used to provide multiple fixed positions to achieve the adjustment of the side plate positions. Each end of the first side plate 22 and the second side plate 23 has a row of mounting holes 220. When it is necessary to adjust the distance between the two side plates of the housing, first loosen the fastening bolts, select the corresponding row of positioning holes 210 on the upright plate 21 according to the test requirements, move the first side plate 22 and the second side plate 23 to the target position, align the mounting holes 220 with the selected positioning holes 210, and retighten the bolts to complete the fixation. By selecting different rows of positioning holes 210, the quantitative adjustment of the side plate distance can be achieved. This structure achieves quick assembly and disassembly through bolt connection, and adjustment can be completed without the need for additional tools, while ensuring the stability of the housing structure.

[0045] For details, please refer to Figures 1 to 4In this embodiment, there are four sets of adjusting components 6 symmetrically distributed on the two vertical beams of the frame 1. Two adjusting components 6 are symmetrically provided at both ends of each vertical beam. Each adjusting component 6 includes a lead screw 61, a support seat 62, a pallet seat 63, and a fixed seat 64. The pallet seat 63 and the fixed seat 64 are respectively fixedly connected to both ends of the bearing seat 44. The support seat 62 is fixedly installed on the frame 1. One end of the lead screw 61 passes laterally through the support seat 62 and is fixedly connected to the pallet seat 63. By synchronously rotating the lead screws 61 on both sides, the pallet seat 63 is driven to move axially along the lead screw 61, which drives the bearing seats 44 at both ends of a crushing roller to move, thereby adjusting the radial distance between the first crushing roller 41 and the second crushing roller 42.

[0046] The adjusting component 6 converts the rotational motion of the lead screw 61 into the linear displacement of the support plate 63, thereby driving the bearing housing 44 to move. The support base 62 can be rigidly connected to the vertical beam of the frame 1 via bolts or welding, providing a stable support foundation for the lead screw 61. The support plate 63 is a moving component connected to one end of the bearing housing 44, and can be fixed by bolt connection, transmitting the axial driving force of the lead screw 61 to the bearing housing 44. Preferably, the support plate 63 has an internal thread adapted to the lead screw 61, the lead screw 61 is threadedly connected to the bearing housing 44, and is tightened and fixed by a fastening nut. The fixed base 64 is a moving component connected to the other end of the bearing housing 44, and can adopt the same connection method as the support plate 63, forming a double-point fixing structure to maintain the stability of the bearing housing 44.

[0047] Specifically, when the lead screws 61 on both sides are rotated synchronously, their threaded transmission converts the rotational motion into linear displacement of the support plate seat 63. The support plate seat 63 drives the bearing seats 44 to slide along the vertical direction of the vertical beam of the frame 1, causing equal displacement at both ends of the first crushing roller 41 or the second crushing roller 42, thereby precisely controlling the radial distance between the two rollers. At the same time, the inherent self-locking characteristic of the lead screw 61 transmission can prevent accidental displacement after adjustment. This scheme uses four sets of symmetrically distributed lead screw pitch adjustment components and a mechanical synchronous transmission mechanism to make the bearing seats 44 on both ends of a crushing roller move equally, effectively eliminating the structural eccentric load problem caused by unilateral force application, realizing precise symmetrical adjustment of the crushing roller distance, ensuring that the axes of the two crushing rollers always remain parallel, avoiding tooth meshing deviation caused by asymmetrical adjustment, and providing stable operating conditions for tooth profile testing.

[0048] For details, please refer to Figures 3 to 4In this embodiment, the locking component 7 includes a first locking member 71 and a second locking member 72. The first locking member 71 and the second locking member 72 are symmetrically sleeved on the lead screw 61 and abut against the two sides of the support seat 62. After the distance between the first crushing roller 41 and the second crushing roller 42 is adjusted, the first locking member 71 and the second locking member 72 are tightened simultaneously to generate axial preload on the two sides of the support seat 62, thereby locking the axial position of the lead screw 61.

[0049] Specifically, the first locking element 71 can be implemented using a threaded locking nut, and the second locking element 72 works in conjunction with the first locking element 71, and can also be implemented using a locking nut. The support base 62 refers to the rigid base that supports the lead screw 61, and has a through hole at the upper end for the lead screw 61 to slide through. The two sides of the support base 62 are precision machined to form planar contact surfaces that match the locking elements.

[0050] Specifically, after the lead screw 61 drives the support plate seat 63 to adjust the crushing roller spacing, the first locking member 71 and the second locking member 72 rotate axially along the lead screw 61 on both sides of the support seat 62 until they form surface contact with the sides of the support seat 62. This causes the two sides of the support seat 62 to be subjected to symmetrical axial clamping forces, thereby eliminating the assembly gap between the lead screw 61 and the support seat 62. This dual locking mechanism ensures that the axial displacement of the lead screw 61 is bidirectionally constrained when subjected to dynamic loads, maintaining the adjustment accuracy of the crushing roller spacing and providing a reliable mechanical basis for the dynamic performance testing of the tooth profile.

[0051] For details, please refer to Figure 3 , Figures 7-8 In this embodiment, the frame 1 includes an upper frame 11 and a lower frame 12 that are fixedly connected. The support base 62 is fixed to both ends of the two vertical beams of the upper frame 1. Each vertical beam of the upper frame 11 is provided with a pad 110. Each pad 110 is provided with at least one first sliding groove 111 and at least one second sliding groove 112. The pallet seat 63 is slidably engaged with the first sliding groove 111 through the first adjusting member 13. The fixed seat 64 is slidably engaged with the second sliding groove 112 through the second adjusting member 14. The first adjusting member 13 and the second adjusting member 14 are respectively provided with a third locking member 15, which is used to fix the pallet seat 63 and the fixed seat 64 on the pad 110 at a predetermined position after the distance between the first crushing roller 41 and the second crushing roller 42 is adjusted.

[0052] The pad 110 refers to a vertically arranged guide plate, which can be formed by processing steel plate and vertically welded to the upper end face of the vertical beam. The first sliding groove 111 at the upper and lower ends of the pad 110 is used to constrain the movement trajectory of the pallet seat 63, and the second sliding groove 112 in the middle is used to constrain the movement trajectory of the fixed seat 64. The first adjusting member 13 and the second adjusting member 14 refer to threaded rod-shaped fasteners, which can be hexagonal head bolts that slide in the first sliding groove 111 to achieve continuous longitudinal position adjustment of the pallet seat 63 and the fixed seat 64. The third locking member 15 refers to a fastening element with internal threads, which can be a fastening nut. By spinning, the first adjusting member 13 and the second adjusting member 14 are pressed against the contact surface of the pad 110 to form a friction self-locking mechanism.

[0053] When the crushing roller is subjected to dynamic load, the constraint effect of the upper and lower sets of first sliding grooves 111 restricts the lateral displacement of the support plate seat 63, and the centrally located second sliding groove 112 suppresses the radial swing of the fixed seat 64. The frictional resistance generated by the double locking structure offsets the displacement trend caused by vibration, solves the problem of unstable locking after the crushing roller spacing is adjusted, and ensures the stability of the crushing roller spacing during the test.

[0054] For details, please refer to Figures 2 to 4 , Figure 9 In this embodiment, the pallet seat 63 includes a pallet seat base plate 630, on which a first connecting hole 6300 is provided. The first adjusting member 13 passes through the first sliding groove 11 and the first connecting hole 6300 to slide the pallet seat 63 to the pad 110. The pallet seat 63 also includes a pallet seat upright plate 631 connected to the pallet seat base plate 630, and the pallet seat upright plate 631 is connected to one end of the bearing seat 44.

[0055] The first connecting hole 6300 is a through hole used to accommodate the first adjusting member 13 and constrain its degree of freedom of movement along the slide groove. The first adjusting member 13 can be a threaded bolt, and by tightening the third locking member 15, a clamping force perpendicular to the plane of the slide groove is generated to fix the position of the pallet seat 63.

[0056] This structure, through the synergistic effect of grooving guidance and bolt locking, allows for stepless adjustment of the crushing roller spacing while achieving rigid fixation after adjustment, effectively counteracting displacement caused by vibration. It solves the problem of bearing housing misalignment due to dynamic loads after adjusting the crushing roller spacing, ensuring stable operation of the testing device under high load conditions and guaranteeing the accuracy and repeatability of the crushing tooth profile test data.

[0057] For details, please refer to Figures 2 to 4 , Figure 10In this embodiment, the fixed seat 64 includes a fixed seat base plate 640, on which a second connecting hole 6400 is provided. The second adjusting member 14 passes through the second sliding groove 112 and the second connecting hole 6400 to slide the fixed seat 64 and the pad 110 in a sliding connection. The fixed seat 64 also includes a fixed seat upright plate 641 connected to the fixed seat base plate 640, and the fixed seat upright plate 641 is fixedly connected to the other end of the bearing seat 44.

[0058] The base plate 640 and the upright plate 641 of the fixed seat can be joined by welding. The second connecting hole 6400 is a through hole, which allows the second adjusting member 14 to pass through, realizing stepless sliding and positioning of the fixed seat 64. The second adjusting member 14 can be a threaded metal rod. By applying a tightening force, the third locking member 15 and the second adjusting member 14 are frictionally pre-tightened, which suppresses the lateral displacement and vibration of the fixed seat 64 in the slide groove, significantly improves the anti-displacement ability of the support structure, and avoids the aggravation of tooth wear and uneven particle size caused by support failure.

[0059] For details, please refer to Figures 1 to 2 In this embodiment, the motor assembly 5 also includes a motor base 53 for supporting the first geared motor 51 and the second geared motor 52; a reinforcing plate 120 is provided on the side wall of the lower frame 12, and a third slide groove 121 extending along the length direction is provided on the reinforcing plate 120; the motor base 53 is slidably connected to the lower frame 12 through a third adjusting member 122 passing through the third slide groove 121; the third adjusting member 122 is pressed and fixed at a predetermined position in the third slide groove 121 by a fourth locking member 123.

[0060] The motor mount 53 refers to a rigid base that independently supports the geared motor, used to distribute the vibration load during motor operation. The reinforcing plate 120 refers to a metal plate welded to the side wall of the lower frame 12, which can be made of trapezoidal cross-section steel plate. The third groove 121 refers to a strip-shaped through hole opened longitudinally along the reinforcing plate 120, which can be formed by laser cutting, used to guide the linear movement of the motor mount. The third adjusting component 122 refers to a threaded fastener, which can be a hexagonal head bolt. The fourth locking component 123 refers to a hexagonal nut that mates with the third adjusting component 122, used to eliminate displacement deviations caused by vibrations in the transmission system.

[0061] Specifically, when adjusting the spacing of the first crushing roller 41 or the second crushing roller 42 using the adjusting assembly 6, the position of the reduction motor also needs to be adjusted simultaneously. The fourth locking member 123 is loosened, allowing the third adjusting member 122 to move within the third sliding groove 121, which in turn drives the motor base 53 to move horizontally along the length of the reinforcing plate 120. After adjustment, the fourth locking member 123 is tightened simultaneously, fixing the relative position of the third adjusting member 122 and the third sliding groove 121 through frictional pressing.

[0062] This solution constructs a stepless adjustment system for the motor position through the cooperation of the sliding groove and the adjusting bolt. This allows the geared motor to move in coordination with the transmission matching requirements of different tooth profile combinations. At the same time, the tightening method of the locking nut can effectively suppress vibration displacement under high load conditions. This achieves the dynamic adjustment capability of the geared motor installation position and solves the problem of insufficient dynamic matching between the transmission system and the crushing roller assembly caused by fixed installation. This enables the test device to quickly adapt to the transmission tension change requirements under different tooth profile parameter combinations and improves the accuracy of crushing efficiency test data.

[0063] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the substance and scope of the present invention. Various modifications made to the above embodiments by those skilled in the art after reading this specification are all within the scope of protection of the present invention.

Claims

1. A tooth profile testing device for a double-toothed roller crusher, characterized in that: include: A frame, with a housing on top and a discharge hopper below the housing, the discharge hopper being fixedly connected to the frame; The crushing roller assembly includes a first crushing roller and a second crushing roller arranged parallel to each other in the housing. The two ends of the first crushing roller and the second crushing roller pass through the side wall of the housing and are rotatably connected to the bearing seat through the shaft end seal. The bearing seat is slidably connected to the frame. The motor assembly includes a first geared motor and a second geared motor respectively disposed on one side of the housing. The output end of the first geared motor is drivenly connected to one end of the first crushing roller, and the output end of the second geared motor is drivenly connected to one end of the second crushing roller. The distance adjustment assembly is symmetrically arranged on both sides of the frame, and the distance adjustment assembly is fixedly connected to the bearing seats at both ends of the first crushing roller and the second crushing roller, respectively, for driving the bearing seats to slide along the vertical direction of the frame to adjust the distance between the two crushing rollers. A locking component is provided on each of the adjusting components. After the distance between the first crushing roller and the second crushing roller is adjusted, the locking component is used to fix the corresponding adjusting component on the frame.

2. The tooth profile testing device for a double-toothed roll crusher according to claim 1, characterized in that: Both the first crushing roller and the second crushing roller include a square combined shaft and multiple crushing tooth plates. The square combined shaft includes a square tooth plate seat extending along the axial direction and a long half shaft and a short half shaft fixedly connected to both ends, respectively. The multiple crushing tooth plates are detachably installed on the outer circumferential surface of the square tooth plate seat. The long half shaft and the short half shaft pass through the side wall of the housing and are fixedly fitted with the shaft end seal. The outer ends of the two long half shafts are respectively connected to the output ends of the first geared motor and the second geared motor.

3. The tooth profile testing device for a double-toothed roll crusher according to claim 1, characterized in that: The housing includes two parallel upright plates, with an adjustable first side plate and a second side plate between the two upright plates. The first side plate and the second side plate are detachably connected to the upright plates by fastening bolts. The long half shaft and short half shaft of the first crushing roller and the second crushing roller pass through the two upright plates and are connected to the shaft end seal.

4. The tooth profile testing device for a double-toothed roll crusher according to claim 3, characterized in that: The two ends of the upright plate are provided with multiple rows of equidistant positioning holes along the length direction. Both ends of the first side plate and the second side plate are provided with mounting holes corresponding to the positioning holes. The distance between the first side plate and the second side plate can be adjusted by passing the fastening bolts through the mounting holes and the selected number of positioning holes in sequence.

5. The tooth profile testing device for a double-toothed roll crusher according to claim 1, characterized in that: The pitch adjustment components are in four groups and symmetrically distributed on the two vertical beams of the frame. Two pitch adjustment components are symmetrically arranged at each end of each vertical beam. Each pitch adjustment component includes a lead screw, a support seat, a pallet seat, and a fixed seat. The pallet seat and the fixed seat are respectively fixedly connected to both ends of the bearing seat. The support seat is fixedly installed on the frame. One end of the lead screw passes laterally through the support seat and is fixedly connected to the pallet seat. By synchronously rotating the lead screws on both sides, the two pallet seats are driven to move along the axial direction of the lead screws, thereby moving the bearing seats on both sides and adjusting the radial distance between the first crushing roller and the second crushing roller.

6. The tooth profile testing device for a double-toothed roll crusher according to claim 5, characterized in that: The locking assembly includes a first locking member and a second locking member, which are symmetrically sleeved on the lead screw and abut against the two sides of the support seat. After the distance between the first crushing roller and the second crushing roller is adjusted, the first locking member and the second locking member are tightened simultaneously to generate axial preload on the two sides of the support seat, thereby locking the axial position of the lead screw.

7. The tooth profile testing device for a double-toothed roll crusher according to claim 5, characterized in that: The frame includes an upper frame and a lower frame fixedly connected. The support base is fixed to both ends of two vertical beams of the upper frame. Each vertical beam of the upper frame is provided with a pad. Each pad has at least one first groove and at least one second groove. The pallet seat is slidably engaged with the first groove through a first adjusting member. The fixed seat is slidably engaged with the second groove through a second adjusting member. The first adjusting member and the second adjusting member are respectively provided with a third locking member, which is used to fix the pallet seat and the fixed seat at a predetermined position on the pad after the distance between the first crushing roller and the second crushing roller is adjusted.

8. The tooth profile testing device for a double-toothed roll crusher according to claim 7, characterized in that: The pallet seat includes a pallet seat base plate, on which a first connecting hole is provided. The first adjusting member passes through the first sliding groove and the first connecting hole to slidably connect the pallet seat to the pad. The pallet seat also includes a pallet seat upright plate connected to the pallet seat base plate, and the pallet seat upright plate is connected to one end of the bearing seat.

9. The tooth profile testing device for a double-toothed roll crusher according to claim 7, characterized in that: The fixed seat includes a fixed seat base plate, the fixed seat base plate is provided with a second connecting hole, the second adjusting member passes through the second sliding groove and the second connecting hole, and slides the fixed seat and the pad plate together; the fixed seat also includes a fixed seat upright plate connected to the fixed seat base plate, and the fixed seat upright plate is fixedly connected to the other end of the bearing seat.

10. The tooth profile testing device for a double-toothed roll crusher according to claim 7, characterized in that: The motor assembly further includes a motor mount for supporting the first geared motor and the second geared motor; a reinforcing plate is provided on the side wall of the lower frame, and a third sliding groove extending along the length direction is provided on the reinforcing plate; the motor mount is slidably connected to the lower frame through a third adjusting member passing through the third sliding groove; the third adjusting member is pressed and fixed at a predetermined position in the third sliding groove by a fourth locking member.

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