A loader tipping load and lift capacity testing device

Abstract

The application provides a loader tipping load and lifting capacity testing device, which comprises a pair of column assemblies and a fixed crossbeam installed between the top of the column assemblies, a hoisting device is installed on the fixed crossbeam, a force measuring device is installed below the hoisting device, the force measuring device is slidably installed on the column assemblies, the hoisting device is connected with the force measuring device through a lifting crossbeam, the force measuring device comprises an upper tension seat, a force gauge and a lower tension seat which are connected in sequence from top to bottom, the lifting crossbeam is fixedly connected with the upper tension seat at both ends, and the lower tension seat is detachably connected with the column assemblies. The force measuring device is slidably installed on the column assemblies, so that the corresponding position can be quickly and conveniently adjusted when different testing targets are achieved, manpower and time are saved, the lower tension seat is locked after the force measuring device is adjusted to the specified position, is fixedly connected with the column assemblies, the force gauge installed between the upper tension seat and the lower tension seat starts to measure the force, and the lifting capacity or tipping load testing is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to a testing device, in particular provides a loader tipping load and lifting capacity testing device, belongs to the technical field of detection device. BACKGROUND

[0002] The loader is a kind of earthwork construction machinery widely used in highway, railway, building, water and electricity, port, mine and other construction projects, it is mainly used for shoveling soil, sand, lime, coal and other bulk materials, and can also be used for light shovel operation to ore, hard soil and other materials. By changing different auxiliary working devices, it can also carry out earthmoving, lifting and other material handling operations such as timber.

[0003] The loader bucket cylinder and lifting cylinder determine the working range of the loader, and the vertical lifting capacity test of the loader mainly includes two parameters of lifting capacity and tipping load. Each test has strict national standards, and the test needs to be implemented according to the standards. The lifting capacity test method is that under the working pressure of the hydraulic circuit, the mass that can be lifted by the lifting hydraulic cylinder from the ground to the large lifting height is kg (kg). The bucket is in the maximum load state, and the resultant force is perpendicular to the centroid of the bucket rated capacity specified in GB / T 21942. The tipping load test method is to place the machine on a horizontal hard ground, the bucket is in the maximum moment arm position, when the loader reaches the limit state of tipping, the minimum mass is kg (kg). The resultant force is perpendicular to the centroid of the bucket rated capacity specified in GB / T 21942.

[0004] When the existing loader is tested in tipping load and maximum lifting height lifting capacity, the position adjustment of the steel wire rope or rigging connected with the tension meter and the bucket is extremely inconvenient, and there is a risk of sliding. During the adjustment of the centroid height of the bucket, the rigging needs to be frequently disassembled and adjusted, which is time-consuming and laborious. SUMMARY

[0005] The present application provides a loader tipping load and lifting capacity testing device, which is connected with the lifting cross beam through the force measuring device, and the lifting cross beam is connected with the bucket, so that the lifting capacity test and the tipping load test of the loader bucket can be realized.

[0006] Technical solution: a loader tipping load and lifting capacity testing device, comprising a pair of column assemblies and a fixed crossbeam installed between the top of the column assemblies, a hoisting device is installed on the fixed crossbeam, a force measuring device is installed below the hoisting device, the force measuring device is slidably installed on the column assembly, the hoisting device is connected with the force measuring device through a lifting crossbeam, the force measuring device comprises an upper tension seat, a force gauge and a lower tension seat connected in sequence from top to bottom, the lifting crossbeam is fixedly connected with the upper tension seat at both ends, and the lower tension seat is detachably connected with the column assembly.

[0007] The force measuring device is slidably installed on the column assembly, so that the corresponding position can be quickly and conveniently adjusted when different test targets are achieved, manpower and time are saved; meanwhile, the upper tension seat is connected with the lifting crossbeam, when the bucket is adjusted to the specified position and rises and contacts the lifting crossbeam, the upper tension seat slides upward under the force; the lower tension seat is locked after the force measuring device is adjusted to the specified position, and is fixedly connected with the column assembly, the tension gauge installed between the upper tension seat and the lower tension seat starts to measure under the force, so that the lifting capacity or tipping load test is realized.

[0008] Preferably, the column assembly comprises two concave column plates fixedly connected with a fixed disc, the fixed disc is fixedly installed on the ground, and a rack is fixedly connected with the inner side of each concave column plate, and the rack is formed with a sliding groove on the inner side of the concave column plate.

[0009] The column assembly is provided in a combined structure, the internal structure is convenient to install, the rack is convenient to lock the lower tension seat, and the rack and the inner side of the concave column plate form the sliding groove, so that the force measuring device is convenient to slide in the interior.

[0010] Preferably, the two concave column plates are fixedly integrated through a U-shaped plate, and a sliding through groove is formed in the lower concave area of the fixedly integrated concave column plates.

[0011] The concave column plates are fixed through the U-shaped plate, the fixing effect is strengthened, the two concave column plates are prevented from being cracked and separated under the force, the safety of the lifting device during testing is improved, and the service life of the equipment is improved.

[0012] Preferably, the force measuring device is slidably installed in the column assembly, an installation hole matched with the lifting crossbeam is formed in the upper tension seat, the lifting crossbeam is fixedly connected with the installation hole through the sliding through groove, and pulleys are arranged on both sides of the upper tension seat and the lower tension seat, so that the force measuring device slides up and down in the sliding groove through the pulleys.

[0013] The force measuring device is installed inside the column assembly and slides up and down in the column assembly, the upper and lower pull force seats are provided with mounting holes matched with the lifting cross beam, and the upper and lower pull force seats are provided with pulleys which can slide in the sliding grooves, so that the height of the lifting cross beam can be adjusted, the rolling friction is small, the device is more suitable for the working environment which needs to be frequently slid, and the service life of the device is further improved.

[0014] Preferably, a telescopic mechanism is arranged in the lower pull force seat, and the two sides of the lower pull force seat are provided with toothed plates engaged with the rack.

[0015] The toothed plates are pushed out by the telescopic mechanism, the toothed plates are engaged with the rack to realize positioning, the connection between the lower pull force seat and the rack is combined and separated in an electric control mode, manual operation is reduced, and the positioning of the lower pull force seat is more convenient.

[0016] Preferably, the upper pull force seat, the force gauge and the lower pull force seat are detachably connected through a pin shaft and a connecting plate.

[0017] The pin shaft and the connecting plate are adopted to cooperate, so that the connection stability is ensured and the installation is facilitated, and convenience is provided for testing.

[0018] Preferably, the lower end of the lifting cross beam is provided with a slidingly connected sliding seat, and the sliding seat comprises a sliding plate and a clamping plate hinged to the lower end of the sliding plate.

[0019] The width of the bucket of different loader models or different working conditions of the same model changes, the relative positions of the two sliding seats can be adjusted to meet different width buckets matched with the cross beam, so that the cross beam and the bucket are better combined to form multi-point contact.

[0020] Preferably, the two sides of the clamping plate are provided with guide columns inclined outward.

[0021] The guide columns are provided when the bucket is adjusted to the approximate position and is lifted upward, and the guide columns provide a guiding effect when the sliding seat position does not completely correspond.

[0022] Preferably, the upper end of the lifting cross beam and the lower end of the fixed cross beam are provided with the same number of hole-ear plates corresponding in position, the hoisting device is fixedly installed on the ear plate of the fixed cross beam, and one end of the hook of the hoisting device is detachably connected with the ear plate on the lifting cross beam.

[0023] The hoisting device lifts the lifting cross beam through the ear plate, the operation is more convenient, the installation is simple, and the testing efficiency is improved.

[0024] Preferably, a control electric box is installed on the outside of the column assembly, and the control electric box is signal connected with the telescopic mechanism in the lower pull force seat and the hoisting device.

[0025] By operating the keys on the control box, the lifting device is controlled to lift or drop, Adjusting the initial height of the lifting crossbeam for matching the bucket center of mass height at the respective test height, Figure 1 The telescopic mechanism in the pull-down force seat can be controlled to lock the pull-down force seat and fix the pull-down force seat with the column assembly, so that the pull-down force value can be tested.

[0026] Beneficial effects: the force measuring device is slidably installed in the column assembly, the rack is arranged in the column assembly, and the toothed plate on the pull-down force seat is arranged on the rack, the meshing and separation of the toothed plate and the rack are realized through the telescopic mechanism, the pull-down force seat is locked, and stable test conditions are provided.

[0027] The lifting cross beam is lifted by the lifting device, the pulleys on the two sides of the pull-up force seat and the pull-down force seat slide in the column assembly, so that different center of mass heights are switched, and the test requirements are conveniently switched. DETAILED DESCRIPTION

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only constitute a part of the embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the provided drawings.

[0029] Figure 2 The axis drawing of the present application.

[0030] Figure 3 The column assembly structure diagram.

[0031] Figure 4 The pull-up force seat structure diagram.

[0032] Figure 5 The pull-down force seat structure diagram.

[0033] Figure 6 The lifting cross beam structure diagram.

[0034] Figure 7 The sliding seat structure diagram.

[0035] Figure 1 The fixed cross beam structure diagram. EMBODIMENT

[0036] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments only constitute a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0037] In the description of the application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0038] In the present application, unless otherwise explicitly specified and limited, "on" or "under" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "under", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is less than the second feature in horizontal height.

[0039] As shown in Figure 2 A loader tipping load and lifting capacity testing device, comprising a pair of column assemblies 1 and a fixed cross beam 2 installed between the top of the column assemblies 1, a hoisting device 3 is installed on the fixed cross beam 2, a force measuring device 4 is installed below the hoisting device 3, the force measuring device 4 is slidably installed on the column assembly 1, the hoisting device 3 connects the force measuring device 4 through a lifting cross beam 5, the force measuring device 4 includes an upper tension seat 41, a force gauge 42 and a lower tension seat 43 connected in turn from top to bottom, the lifting cross beam 5 is fixedly connected with the upper tension seat 41 at both ends, and the lower tension seat 43 is detachably connected with the column assembly 1.

[0040] The application can be quickly and conveniently adjusted to the corresponding position when different test targets are achieved, manpower and time are saved, the lifting cross beam 5 is connected with the upper pull force meter seat, before the test starts, the lifting cross beam 5 is at the highest position relative to the column, after the position of the shovel of the loader is adjusted according to the relevant standard, the lifting cross beam 5 is controlled to descend through the control electric box 6, when the sliding seat 51 on the lifting cross beam 5 contacts the side blade plate of the shovel of the loader, the descending of the lifting cross beam 5 is stopped, the output end connecting tooth plate 432 of the telescopic mechanism 431 of the lower pull force seat 43 is locked with the rack 13 fixedly connected with the inner side of the concave column plate 12 through the control electric box 6, at this time, the lower pull force seat 43 is temporarily fixedly connected with the column assembly 1, when the test starts, as the height of the shovel of the loader is lifted, the lifting cross beam 5 drives the upper pull force seat 41 to continue to lift, the lower pull force seat 43 cannot be lifted due to the temporary fixed connection with the column assembly 1, the tension meter installed between the upper pull force seat 41 and the lower pull force seat 43 starts to measure the force, and the test of the lifting capacity or the tipping load is realized.

[0041] As shown in Figure 2 The column assembly 1 comprises two concave column plates 12 fixedly connected with the fixed disc 11, the fixed disc 11 is fixedly installed on the ground, the two concave column plates 12 are provided with the rack 13 fixedly connected with the inner side of the concave column plate 12, and the rack 13 is provided with the sliding groove 14 formed by the inner side of the concave column plate 12 on both sides.

[0042] The column assembly 1 is provided as a combined structure, the internal structure is convenient to install, the rack 13 is convenient to lock the lower pull force seat 43, and the sliding groove 14 is formed by the inner side of the concave column plate 12, so that the sliding of the force measuring device 4 in the interior is realized.

[0043] The two concave column plates 12 are fixedly integrated through the U-shaped plate 15, and the lower concave area of the concave column plate 12 fixedly integrated forms the sliding through groove 16.

[0044] The concave column plate 12 is fixed through the U-shaped plate 15, the fixing effect is strengthened, the two concave column plates 12 are prevented from being cracked and separated under force, the safety during the test of the lifting device is improved, and the service life of the equipment is improved.

[0045] As shown in Figure 4 and 3 The force measuring device 4 is slidably installed in the column assembly 1, the upper pull force seat 41 is provided with the mounting hole 411 matched with the lifting cross beam 5, the lifting cross beam 5 is fixedly connected with the mounting hole 411 through the sliding through groove 16, the upper pull force seat 41 and the lower pull force seat 43 are provided with the pulley 44 on both sides, and the force measuring device 4 slides up and down in the sliding groove 14 through the pulley 44.

[0046] Force measuring device 4 is installed inside the column assembly 1, sliding up and down in the column assembly 1, the upper pull seat 41 is provided with a mounting hole 411 matched with the lifting beam 5, and the upper and lower pull seats 43 are provided with pulleys 44 which can slide in the sliding groove 14, which facilitates the adjustment of the height of the lifting beam 5, and the rolling friction is small, which is more suitable for the working environment that needs to be frequently slid, and further improves the service life of the device.

[0047] As shown in Figures 5 to 6 The lower pull seat 43 is provided with a telescopic mechanism 431, and the two sides of the lower pull seat 43 are provided with a toothed plate 432 engaged with the rack 13, and the output end of the telescopic mechanism 431 is connected with the toothed plate 432.

[0048] The toothed plate 432 is pushed out by the telescopic mechanism 431, and the toothed plate 432 is engaged with the rack 13 to realize positioning. By controlling the connection of the lower pull seat 43 and the rack 13, the operation difficulty is reduced, and the positioning of the lower pull seat 43 is more convenient.

[0049] The connection between the upper pull seat 41, the force gauge 42 and the lower pull seat 43 is detachably connected through the pin shaft 45 and the connecting plate 46.

[0050] The pin shaft 45 and the connecting plate 46 are used to enlarge the processing error, ensure the stability of the connection and facilitate the installation, and provide convenience for testing.

[0051] As shown in Figure 7 The lower end of the lifting beam 5 is provided with a slidingly connected sliding seat 51, and the sliding seat 51 comprises a sliding plate 511 and a clamping plate 512 hinged to the lower end of the sliding plate 511.

[0052] The width of the bucket of different loaders or different working conditions of the same type of vehicle will change, and the relative position of the two sliding seats can be adjusted to meet the different width of the bucket and the beam, so that the beam and the bucket are better combined to form multiple point contact.

[0053] The two sides of the clamping plate 512 are provided with outwardly inclined guide columns 513.

[0054] The guide column 513 is provided, and when the bucket is adjusted to the approximate position, it is lifted upward, and when the position of the sliding seat 51 is not completely corresponding, the guide column 513 provides a guide function when the bucket is lifted.

[0055] As shown in Figure 1 The upper end of the lifting beam 5 and the lower end of the fixed beam 2 are provided with the same number of hole-ear plates 21 corresponding in position, the lifting device 3 is fixedly installed on the ear plate 21 of the fixed beam 2, and the hook of the lifting device 3 is detachably connected with the ear plate 21 on the lifting beam 5.

[0056] The lifting device 3 lifts the lifting beam 5 through the ear plate 21, making operation more convenient, installation simpler, and improving testing efficiency.

[0057] like ​ As shown, a control box 6 is installed on the outside of the column assembly 1. The control box 6 is connected to the telescopic mechanism 431 inside the pull-down seat 43 and the lifting device 3.

[0058] By operating the buttons on the control box 6, the lifting device 3 can be raised or lowered, thereby adjusting the height of the lifting beam 5. In addition, the control box 6 can also control the telescopic mechanism 431 in the pull-down seat 43. After the height of the lifting beam 5 is adjusted, that is, when the lifting beam 5 contacts the side blade of the bucket, the toothed plate 432 is pushed out by the telescopic mechanism 431 to engage with the rack 13, and the pull-down seat 43 is locked with the rack 13, thereby achieving temporary fixation of the pull-down seat 43, which is convenient for testing the tensile force value.

[0059] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0060] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A loader roll-over load and lift capacity testing device comprising a pair of post assemblies (1) and a fixed cross-member (2) mounted between the tops of the post assemblies (1), a hoist device (3) mounted on the fixed cross-member (2), a load cell device (4) mounted below the hoist device (3), characterised in that: The force measuring device (4) is slidably mounted on the column assembly (1). The lifting device (3) is connected to the force measuring device (4) through the lifting beam (5). The force measuring device (4) includes an upper tension seat (41), a force gauge (42), and a lower tension seat (43) connected sequentially from top to bottom. The two ends of the lifting beam (5) are fixedly connected to the upper tension seat (41), and the lower tension seat (43) is detachably connected to the column assembly (1). The upper tension seat (41) is provided with a mounting hole (411) that matches the lifting beam (5). The lifting beam (5) passes through the sliding groove (16) and is fixedly connected to the mounting hole (411). Both sides of the upper tension seat (41) and the lower tension seat (43) are provided with pulleys (44). The force measuring device (4) slides up and down in the sliding groove (14) through the pulleys (44). The pull-down seat (43) is provided with a telescopic mechanism (431), and toothed plates (432) that mesh with the rack (13) are provided on both sides of the pull-down seat (43). The output end of the telescopic mechanism (431) is connected to the toothed plates (432).

2. The loader rollover and lift capacity testing device of claim 1, wherein: The column assembly (1) includes two concave column plates (12) fixedly connected to a fixed plate (11). The fixed plate (11) is fixedly installed on the ground. Each of the two concave column plates (12) is provided with a rack (13) fixedly connected to the inner side of the concave column plate (12). The rack (13) forms a groove (14) on both sides with the inner side of the concave column plate (12).

3. The loader tilting load and lifting capacity testing device according to claim 2, characterized in that: The two concave column plates (12) are fixed together by a U-shaped plate (15), and the concave area of ​​the fixed concave column plate (12) forms a sliding groove (16).

4. The loader tilting load and lifting capacity testing device according to claim 1, characterized in that: The upper tension seat (41), the force gauge (42), and the lower tension seat (43) are detachably connected by a pin (45) and a connecting plate (46).

5. The loader tilting load and lifting capacity testing device according to claim 1, characterized in that: The lower end of the lifting beam (5) is provided with a sliding block (51) that is slidably connected. The sliding block (51) includes a sliding plate (511) and a clamping plate (512) hinged to the lower end of the sliding plate (511).

6. The loader tilting load and lifting capacity testing device according to claim 5, characterized in that: The clamp (512) is provided with guide posts (513) that are inclined outward on both sides.

7. The loader tilting load and lifting capacity testing device according to claim 1, characterized in that: The upper end of the lifting beam (5) and the lower end of the fixed beam (2) are provided with the same number of perforated ear plates (21) in corresponding positions. The lifting device (3) is fixedly installed on the ear plate (21) of the fixed beam (2). One end of the hook of the lifting device (3) is detachably connected to the ear plate (21) on the lifting beam (5).

8. The loader tilting load and lifting capacity testing device according to claim 1, characterized in that: A control box (6) is installed on the outside of the column assembly (1). The control box (6) is connected to the telescopic mechanism (431) in the pull-down seat (43) and the lifting device (3).

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